diff --git a/packages/destination-actions/src/destinations/kochava/__tests__/__snapshots__/snapshot.test.ts.snap b/packages/destination-actions/src/destinations/kochava/__tests__/__snapshots__/snapshot.test.ts.snap
new file mode 100644
index 0000000000..ad245caf8f
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/__tests__/__snapshots__/snapshot.test.ts.snap
@@ -0,0 +1,95 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Testing snapshot for actions-kochava destination: event action - all fields 1`] = `
+Object {
+  "action": "event",
+  "data": Object {
+    "app_tracking_transparency": Object {
+      "att": false,
+      "att_detail": "c)30knD9jX&cI",
+      "att_duration": 1955441609277.44,
+      "att_time": 1955441609277.44,
+    },
+    "app_version": "c)30knD9jX&cI",
+    "currency": "AMD",
+    "device_ids": Object {
+      "adid": "c)30knD9jX&cI",
+      "android_id": "c)30knD9jX&cI",
+      "idfa": "c)30knD9jX&cI",
+      "idfv": "c)30knD9jX&cI",
+    },
+    "device_limit_tracking": true,
+    "device_ua": "c)30knD9jX%26cI",
+    "device_ver": "c)30knD9jX&cI",
+    "event_data": Object {
+      "testType": "c)30knD9jX&cI",
+    },
+    "event_name": "c)30knD9jX&cI",
+    "origination_ip": "c)30knD9jX&cI",
+    "usertime": 1612137600,
+  },
+  "kochava_app_id": "c)30knD9jX&cI",
+  "kochava_device_id": "c)30knD9jX&cI",
+}
+`;
+
+exports[`Testing snapshot for actions-kochava destination: event action - required fields 1`] = `
+Object {
+  "action": "event",
+  "data": Object {
+    "device_ids": Object {
+      "adid": "c)30knD9jX&cI",
+      "android_id": "c)30knD9jX&cI",
+      "idfa": "c)30knD9jX&cI",
+      "idfv": "c)30knD9jX&cI",
+    },
+    "event_name": "c)30knD9jX&cI",
+  },
+  "kochava_app_id": "c)30knD9jX&cI",
+  "kochava_device_id": "c)30knD9jX&cI",
+}
+`;
+
+exports[`Testing snapshot for actions-kochava destination: install action - all fields 1`] = `
+Object {
+  "action": "install",
+  "data": Object {
+    "ad_services_token": "2m*qGXENfE",
+    "app_tracking_transparency": Object {
+      "att": true,
+      "att_detail": "2m*qGXENfE",
+      "att_duration": -32716306922864.64,
+      "att_time": -32716306922864.64,
+    },
+    "app_version": "2m*qGXENfE",
+    "device_ids": Object {
+      "adid": "2m*qGXENfE",
+      "android_id": "2m*qGXENfE",
+      "idfa": "2m*qGXENfE",
+      "idfv": "2m*qGXENfE",
+    },
+    "device_ua": "2m*qGXENfE",
+    "device_ver": "2m*qGXENfE",
+    "origination_ip": "2m*qGXENfE",
+    "usertime": 1612137600,
+  },
+  "kochava_app_id": "2m*qGXENfE",
+  "kochava_device_id": "2m*qGXENfE",
+}
+`;
+
+exports[`Testing snapshot for actions-kochava destination: install action - required fields 1`] = `
+Object {
+  "action": "install",
+  "data": Object {
+    "device_ids": Object {
+      "adid": "2m*qGXENfE",
+      "android_id": "2m*qGXENfE",
+      "idfa": "2m*qGXENfE",
+      "idfv": "2m*qGXENfE",
+    },
+  },
+  "kochava_app_id": "2m*qGXENfE",
+  "kochava_device_id": "2m*qGXENfE",
+}
+`;
diff --git a/packages/destination-actions/src/destinations/kochava/__tests__/e2e.test.ts b/packages/destination-actions/src/destinations/kochava/__tests__/e2e.test.ts
new file mode 100644
index 0000000000..bd667a5222
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/__tests__/e2e.test.ts
@@ -0,0 +1,244 @@
+/**
+ * E2E tests for Kochava (Actions)
+ *
+ * These tests make real HTTP calls to a running local serve server
+ * (./bin/run serve), which in turn makes real outbound calls to Kochava's
+ * https://control.kochava.com/track/json endpoint. They are NOT run in CI.
+ *
+ * Prerequisites:
+ *   1. Start the serve server (in a separate terminal):
+ *      ./bin/run serve kochava --noUI
+ *
+ *   2. Set environment variables (or create a .env file):
+ *      export BASE_URL=http://localhost:3000
+ *      export KOCHAVA_APP_ID=<a Kochava App GUID; a dummy value is fine for validation paths>
+ *
+ *   3. Run the tests:
+ *      yarn cloud jest --testPathPattern="kochava/__tests__/e2e"
+ */
+
+import http from 'http'
+
+// Jest's node test environment does not expose undici's global `fetch`, and
+// serve listens on IPv4 only, so use the built-in http module against 127.0.0.1.
+const BASE_URL = process.env.BASE_URL ?? 'http://127.0.0.1:3000'
+const KOCHAVA_APP_ID = process.env.KOCHAVA_APP_ID ?? 'e2e-dummy-app-guid'
+
+jest.setTimeout(30000)
+
+function request(
+  method: 'GET' | 'POST',
+  path: string,
+  body?: Record<string, unknown>
+): Promise<{ status: number; body: any }> {
+  return new Promise((resolve, reject) => {
+    const url = new URL(`${BASE_URL}${path}`)
+    const payload = body === undefined ? undefined : JSON.stringify(body)
+    const req = http.request(
+      {
+        hostname: url.hostname,
+        port: url.port,
+        path: url.pathname,
+        method,
+        headers:
+          payload === undefined
+            ? undefined
+            : { 'Content-Type': 'application/json', 'Content-Length': Buffer.byteLength(payload) }
+      },
+      (res) => {
+        let data = ''
+        res.on('data', (chunk) => (data += chunk))
+        res.on('end', () => {
+          let parsed: unknown = null
+          try {
+            parsed = JSON.parse(data)
+          } catch {
+            parsed = data
+          }
+          resolve({ status: res.statusCode ?? 0, body: parsed })
+        })
+      }
+    )
+    req.on('error', reject)
+    if (payload !== undefined) req.write(payload)
+    req.end()
+  })
+}
+
+async function post(path: string, body: Record<string, unknown>) {
+  return request('POST', path, body)
+}
+
+async function get(path: string) {
+  return request('GET', path)
+}
+
+const settings = { kochava_app_id: KOCHAVA_APP_ID }
+
+describe('Kochava (Actions) E2E', () => {
+  beforeAll(async () => {
+    try {
+      await get('/manifest')
+    } catch {
+      throw new Error('Serve server is not running. Start it with:\n  ./bin/run serve kochava --noUI')
+    }
+  })
+
+  describe('Authentication', () => {
+    // No testAuthentication is defined; the framework default validates the
+    // settings schema. A valid required App GUID should authenticate.
+    it('returns ok:true for valid settings', async () => {
+      const res = await post('/authenticate', { kochava_app_id: KOCHAVA_APP_ID })
+      expect(res.status).toBe(200)
+      expect(res.body.ok).toBe(true)
+    })
+  })
+
+  describe('event (Post-Install Event)', () => {
+    it('delivers a post-install event via perform()', async () => {
+      const res = await post('/event', {
+        settings,
+        payload: {
+          type: 'track',
+          event: 'Subscription Started',
+          messageId: 'msg-e2e-event-1',
+          timestamp: '2021-03-20T18:06:56.000Z',
+          properties: { currency: 'USD', sum: 150 },
+          context: {
+            device: { id: 'device-e2e-1', advertisingId: 'idfa-e2e-1', adTrackingEnabled: true },
+            os: { version: '14.4' },
+            app: { version: '1.0.0' },
+            userAgent: 'Mozilla/5.0 (iPhone)',
+            ip: '104.219.46.66'
+          }
+        },
+        mapping: {
+          event_name: { '@path': '$.event' },
+          idfa: { '@path': '$.context.device.advertisingId' },
+          device_ua: { '@path': '$.context.userAgent' },
+          device_ver: { '@path': '$.context.os.version' },
+          origination_ip: { '@path': '$.context.ip' },
+          usertime: { '@path': '$.timestamp' }
+        }
+      })
+      expect(res.status).toBe(200)
+      expect(Array.isArray(res.body)).toBe(true)
+    })
+
+    it('honors kochava_app_id override in the mapping', async () => {
+      const res = await post('/event', {
+        settings,
+        payload: { type: 'track', event: 'Purchase', messageId: 'msg-e2e-event-2' },
+        mapping: {
+          kochava_app_id: 'override-guid-e2e',
+          event_name: 'Purchase',
+          idfa: 'idfa-e2e-2',
+          device_ver: '15.0'
+        }
+      })
+      expect(res.status).toBe(200)
+      expect(Array.isArray(res.body)).toBe(true)
+    })
+
+    it('returns a validation error when no device identifier is provided', async () => {
+      const res = await post('/event', {
+        settings,
+        payload: { type: 'track', event: 'Purchase', messageId: 'msg-e2e-event-3' },
+        mapping: {
+          event_name: 'Purchase',
+          device_ver: '15.0'
+          // no idfa / idfv / adid / android_id
+        }
+      })
+      expect(res.status).toBe(200)
+      expect(res.body[0].message).toContain('device identifier')
+    })
+
+    it('returns a validation error when event_name (required) is missing', async () => {
+      const res = await post('/event', {
+        settings,
+        payload: { type: 'track', messageId: 'msg-e2e-event-4' },
+        mapping: {
+          idfa: 'idfa-e2e-4',
+          device_ver: '15.0'
+        }
+      })
+      expect(res.status).toBe(200)
+      expect(res.body[0].message).toMatch(/event_name|required/i)
+    })
+  })
+
+  describe('install (Install Notification)', () => {
+    it('delivers an install notification via perform()', async () => {
+      const res = await post('/install', {
+        settings,
+        payload: {
+          type: 'track',
+          event: 'Application Installed',
+          messageId: 'msg-e2e-install-1',
+          timestamp: '2021-03-20T18:06:56.000Z',
+          context: {
+            device: { id: 'device-e2e-1', advertisingId: 'idfa-e2e-1' },
+            os: { version: '15.3' },
+            app: { version: '3.3.0' },
+            userAgent: 'Mozilla/5.0 (iPhone)',
+            ip: '77.224.141.10'
+          }
+        },
+        mapping: {
+          idfa: { '@path': '$.context.device.advertisingId' },
+          device_ver: { '@path': '$.context.os.version' },
+          app_version: { '@path': '$.context.app.version' },
+          origination_ip: { '@path': '$.context.ip' }
+        }
+      })
+      expect(res.status).toBe(200)
+      expect(Array.isArray(res.body)).toBe(true)
+    })
+
+    it('includes the ATT block and AdServices token when provided', async () => {
+      const res = await post('/install', {
+        settings,
+        payload: { type: 'track', event: 'Application Installed', messageId: 'msg-e2e-install-2' },
+        mapping: {
+          idfa: 'idfa-e2e-2',
+          device_ver: '15.0',
+          att: true,
+          att_time: 1616263616,
+          ad_services_token: 'as-token-e2e'
+        }
+      })
+      expect(res.status).toBe(200)
+      expect(Array.isArray(res.body)).toBe(true)
+    })
+
+    it('returns a validation error when no device identifier is provided', async () => {
+      const res = await post('/install', {
+        settings,
+        payload: { type: 'track', event: 'Application Installed', messageId: 'msg-e2e-install-3' },
+        mapping: {
+          device_ver: '15.0'
+          // no idfa / idfv / adid / android_id
+        }
+      })
+      expect(res.status).toBe(200)
+      expect(res.body[0].message).toContain('device identifier')
+    })
+  })
+
+  describe('Skipped (not testable via HTTP)', () => {
+    // Kochava exposes no auth-verification endpoint and this destination defines
+    // no testAuthentication, so there is no failure branch to trigger for invalid
+    // credentials beyond settings-schema validation.
+    it.skip('testAuthentication failure branch — no custom testAuthentication exists', () => {})
+
+    // No performBatch is implemented (Kochava /track/json accepts one record per
+    // call), so there is no batch delivery path to exercise.
+    it.skip('performBatch delivery path — not implemented (no batch endpoint)', () => {})
+
+    // 5xx/429 -> RetryableError and 4xx -> APIError mapping depend on Kochava's
+    // live response to a given payload, which cannot be forced deterministically
+    // over HTTP without a real (mis)configured App GUID.
+    it.skip('retryable vs non-retryable HTTP error mapping — depends on live Kochava response', () => {})
+  })
+})
diff --git a/packages/destination-actions/src/destinations/kochava/__tests__/index.test.ts b/packages/destination-actions/src/destinations/kochava/__tests__/index.test.ts
new file mode 100644
index 0000000000..3bf87802c2
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/__tests__/index.test.ts
@@ -0,0 +1,23 @@
+import Destination from '../index'
+
+describe('Kochava (Actions)', () => {
+  it('exposes the expected metadata', () => {
+    expect(Destination.name).toBe('Kochava (Actions)')
+    expect(Destination.slug).toBe('actions-kochava')
+    expect(Destination.mode).toBe('cloud')
+  })
+
+  it('registers the event and install actions', () => {
+    expect(Object.keys(Destination.actions)).toEqual(expect.arrayContaining(['event', 'install']))
+  })
+
+  it('requires the kochava_app_id setting', () => {
+    const fields = Destination.authentication?.fields
+    expect(fields?.kochava_app_id?.required).toBe(true)
+  })
+
+  it('defines presets for both actions', () => {
+    const partnerActions = (Destination.presets ?? []).map((p) => p.partnerAction)
+    expect(partnerActions).toEqual(expect.arrayContaining(['event', 'install']))
+  })
+})
diff --git a/packages/destination-actions/src/destinations/kochava/__tests__/snapshot.test.ts b/packages/destination-actions/src/destinations/kochava/__tests__/snapshot.test.ts
new file mode 100644
index 0000000000..34f0d7bb03
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/__tests__/snapshot.test.ts
@@ -0,0 +1,77 @@
+import { createTestEvent, createTestIntegration } from '@segment/actions-core'
+import { generateTestData } from '../../../lib/test-data'
+import destination from '../index'
+import nock from 'nock'
+
+const testDestination = createTestIntegration(destination)
+const destinationSlug = 'actions-kochava'
+
+describe(`Testing snapshot for ${destinationSlug} destination:`, () => {
+  for (const actionSlug in destination.actions) {
+    it(`${actionSlug} action - required fields`, async () => {
+      const seedName = `${destinationSlug}#${actionSlug}`
+      const action = destination.actions[actionSlug]
+      const [eventData, settingsData] = generateTestData(seedName, destination, action, true)
+
+      nock(/.*/).persist().get(/.*/).reply(200)
+      nock(/.*/).persist().post(/.*/).reply(200)
+      nock(/.*/).persist().put(/.*/).reply(200)
+
+      const event = createTestEvent({
+        properties: eventData
+      })
+
+      const responses = await testDestination.testAction(actionSlug, {
+        event: event,
+        mapping: event.properties,
+        settings: settingsData,
+        auth: undefined
+      })
+
+      const request = responses[0].request
+      const rawBody = await request.text()
+
+      try {
+        const json = JSON.parse(rawBody)
+        expect(json).toMatchSnapshot()
+        return
+      } catch (err) {
+        expect(rawBody).toMatchSnapshot()
+      }
+
+      expect(request.headers).toMatchSnapshot()
+    })
+
+    it(`${actionSlug} action - all fields`, async () => {
+      const seedName = `${destinationSlug}#${actionSlug}`
+      const action = destination.actions[actionSlug]
+      const [eventData, settingsData] = generateTestData(seedName, destination, action, false)
+
+      nock(/.*/).persist().get(/.*/).reply(200)
+      nock(/.*/).persist().post(/.*/).reply(200)
+      nock(/.*/).persist().put(/.*/).reply(200)
+
+      const event = createTestEvent({
+        properties: eventData
+      })
+
+      const responses = await testDestination.testAction(actionSlug, {
+        event: event,
+        mapping: event.properties,
+        settings: settingsData,
+        auth: undefined
+      })
+
+      const request = responses[0].request
+      const rawBody = await request.text()
+
+      try {
+        const json = JSON.parse(rawBody)
+        expect(json).toMatchSnapshot()
+        return
+      } catch (err) {
+        expect(rawBody).toMatchSnapshot()
+      }
+    })
+  }
+})
diff --git a/packages/destination-actions/src/destinations/kochava/constants.ts b/packages/destination-actions/src/destinations/kochava/constants.ts
new file mode 100644
index 0000000000..5b05ba72e2
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/constants.ts
@@ -0,0 +1,15 @@
+export const BASE_URL = 'https://control.kochava.com'
+
+export const TRACK_ENDPOINT = `${BASE_URL}/track/json`
+
+// Kochava multiplexes install vs event tracking through the top-level `action` field
+// on the same /track/json endpoint.
+export const KochavaAction = {
+  Install: 'install',
+  Event: 'event'
+} as const
+
+export type KochavaActionType = typeof KochavaAction[keyof typeof KochavaAction]
+
+// The device identifier keys Kochava recognises inside the `device_ids` object.
+export const DEVICE_ID_KEYS = ['idfa', 'idfv', 'adid', 'android_id'] as const
diff --git a/packages/destination-actions/src/destinations/kochava/event/__tests__/index.test.ts b/packages/destination-actions/src/destinations/kochava/event/__tests__/index.test.ts
new file mode 100644
index 0000000000..a2c7d7748f
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/event/__tests__/index.test.ts
@@ -0,0 +1,89 @@
+import nock from 'nock'
+import { createTestEvent, createTestIntegration } from '@segment/actions-core'
+import Destination from '../../index'
+
+const testDestination = createTestIntegration(Destination)
+
+const settings = { kochava_app_id: 'ko-app-guid-123' }
+
+describe('Kochava.event', () => {
+  afterEach(() => {
+    nock.cleanAll()
+  })
+
+  it('sends a post-install event with action "event" and epoch-seconds usertime', async () => {
+    nock('https://control.kochava.com').post('/track/json').reply(200, {})
+
+    const event = createTestEvent({
+      type: 'track',
+      event: 'Subscription Started',
+      timestamp: '2021-03-20T18:06:56.000Z',
+      properties: { currency: 'USD', sum: 150 },
+      context: {
+        device: { id: 'device-1', advertisingId: 'idfa-abc', adTrackingEnabled: true },
+        os: { version: '14.4' },
+        app: { version: '1.0.0' },
+        userAgent: 'Mozilla/5.0 (iPhone)',
+        ip: '104.219.46.66'
+      }
+    })
+
+    const responses = await testDestination.testAction('event', {
+      event,
+      settings,
+      useDefaultMappings: true
+    })
+
+    expect(responses.length).toBe(1)
+    expect(responses[0].status).toBe(200)
+
+    const body = JSON.parse(responses[0].options.body as string)
+    expect(body.action).toBe('event')
+    expect(body.kochava_app_id).toBe('ko-app-guid-123')
+    expect(body.data.event_name).toBe('Subscription Started')
+    expect(body.data.device_ids.idfa).toBe('idfa-abc')
+    expect(body.data.usertime).toBe(1616263616)
+    // device_ua is URL-encoded
+    expect(body.data.device_ua).toBe(encodeURIComponent('Mozilla/5.0 (iPhone)'))
+    // ad_tracking_enabled true -> device_limit_tracking false
+    expect(body.data.device_limit_tracking).toBe(false)
+    expect(body.data.currency).toBe('USD')
+  })
+
+  it('overrides the settings App ID with the mapped kochava_app_id', async () => {
+    nock('https://control.kochava.com').post('/track/json').reply(200, {})
+
+    const event = createTestEvent({ type: 'track', event: 'Purchase' })
+
+    const responses = await testDestination.testAction('event', {
+      event,
+      settings,
+      mapping: {
+        kochava_app_id: 'override-guid',
+        event_name: 'Purchase',
+        idfa: 'idfa-xyz',
+        device_ver: '15.0'
+      }
+    })
+
+    const body = JSON.parse(responses[0].options.body as string)
+    expect(body.kochava_app_id).toBe('override-guid')
+    expect(body.data.device_ids.idfa).toBe('idfa-xyz')
+  })
+
+  it('throws a validation error when no device identifier is present', async () => {
+    const event = createTestEvent({ type: 'track', event: 'Purchase' })
+
+    await expect(
+      testDestination.testAction('event', {
+        event,
+        settings,
+        mapping: {
+          event_name: 'Purchase',
+          idfa: '',
+          device_ver: '15.0'
+        }
+      })
+    ).rejects.toThrow('At least one device identifier')
+  })
+})
diff --git a/packages/destination-actions/src/destinations/kochava/event/generated-types.ts b/packages/destination-actions/src/destinations/kochava/event/generated-types.ts
new file mode 100644
index 0000000000..cdecb9467c
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/event/generated-types.ts
@@ -0,0 +1,82 @@
+// Generated file. DO NOT MODIFY IT BY HAND.
+
+export interface Payload {
+  /**
+   * The Kochava App GUID. Overrides the Kochava App ID configured in Settings for this event.
+   */
+  kochava_app_id?: string
+  /**
+   * A consistent, unique device identifier. May be omitted when Device IDs are provided.
+   */
+  kochava_device_id?: string
+  /**
+   * iOS advertising identifier (IDFA). At least one device identifier is required.
+   */
+  idfa?: string
+  /**
+   * iOS vendor identifier (IDFV). At least one device identifier is required.
+   */
+  idfv?: string
+  /**
+   * Android/Google advertising identifier (ADID). At least one device identifier is required.
+   */
+  adid?: string
+  /**
+   * Android device identifier. At least one device identifier is required.
+   */
+  android_id?: string
+  /**
+   * The device user agent string. Either this or Device OS Version is required for OS detection.
+   */
+  device_ua?: string
+  /**
+   * The device OS version. Either this or Device User Agent is required for OS detection.
+   */
+  device_ver?: string
+  /**
+   * The IP address of the device.
+   */
+  origination_ip?: string
+  /**
+   * The version of the application.
+   */
+  app_version?: string
+  /**
+   * The time the event occurred. Sent to Kochava as epoch seconds.
+   */
+  usertime?: string | number
+  /**
+   * iOS 14+ App Tracking Transparency authorization status.
+   */
+  att?: boolean
+  /**
+   * iOS 14+ App Tracking Transparency prompt time (epoch seconds).
+   */
+  att_time?: number
+  /**
+   * iOS 14+ App Tracking Transparency prompt duration in seconds.
+   */
+  att_duration?: number
+  /**
+   * iOS 14+ App Tracking Transparency additional detail.
+   */
+  att_detail?: string
+  /**
+   * The name of the event.
+   */
+  event_name: string
+  /**
+   * Free-form event values (e.g. id, name, sum) associated with the event.
+   */
+  event_data?: {
+    [k: string]: unknown
+  }
+  /**
+   * The currency code for revenue events (e.g. "USD").
+   */
+  currency?: string
+  /**
+   * Whether ad tracking is enabled on the device. Sent to Kochava as the inverse (device_limit_tracking).
+   */
+  ad_tracking_enabled?: boolean
+}
diff --git a/packages/destination-actions/src/destinations/kochava/event/index.ts b/packages/destination-actions/src/destinations/kochava/event/index.ts
new file mode 100644
index 0000000000..b5ddd553b9
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/event/index.ts
@@ -0,0 +1,49 @@
+import type { ActionDefinition } from '@segment/actions-core'
+import type { Settings } from '../generated-types'
+import type { Payload } from './generated-types'
+import { commonFields } from '../fields'
+import { KochavaAction } from '../constants'
+import { sendEvent } from '../utils'
+
+const action: ActionDefinition<Settings, Payload> = {
+  title: 'Post-Install Event',
+  description: 'Send a post-install in-app event (e.g. purchase, subscription) to Kochava.',
+  defaultSubscription: 'type = "track" and event != "Application Installed"',
+  fields: {
+    ...commonFields,
+    event_name: {
+      label: 'Event Name',
+      description: 'The name of the event.',
+      type: 'string',
+      required: true,
+      default: { '@path': '$.event' }
+    },
+    event_data: {
+      label: 'Event Data',
+      description: 'Free-form event values (e.g. id, name, sum) associated with the event.',
+      type: 'object',
+      required: false,
+      default: { '@path': '$.properties' }
+    },
+    currency: {
+      label: 'Currency',
+      description: 'The currency code for revenue events (e.g. "USD").',
+      type: 'string',
+      required: false,
+      default: { '@path': '$.properties.currency' }
+    },
+    ad_tracking_enabled: {
+      label: 'Ad Tracking Enabled',
+      description:
+        'Whether ad tracking is enabled on the device. Sent to Kochava as the inverse (device_limit_tracking).',
+      type: 'boolean',
+      required: false,
+      default: { '@path': '$.context.device.adTrackingEnabled' }
+    }
+  },
+  perform: (request, { payload, settings }) => {
+    return sendEvent(request, settings, payload, KochavaAction.Event)
+  }
+}
+
+export default action
diff --git a/packages/destination-actions/src/destinations/kochava/fields.ts b/packages/destination-actions/src/destinations/kochava/fields.ts
new file mode 100644
index 0000000000..eba087bd4f
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/fields.ts
@@ -0,0 +1,105 @@
+import type { InputField } from '@segment/actions-core'
+
+/**
+ * Fields shared by both the Install Notification and Post-Install Event actions.
+ * Each action spreads these into its own `fields` object.
+ */
+export const commonFields: Record<string, InputField> = {
+  kochava_app_id: {
+    label: 'Kochava App ID',
+    description: 'The Kochava App GUID. Overrides the Kochava App ID configured in Settings for this event.',
+    type: 'string',
+    required: false
+  },
+  kochava_device_id: {
+    label: 'Kochava Device ID',
+    description: 'A consistent, unique device identifier. May be omitted when Device IDs are provided.',
+    type: 'string',
+    required: false,
+    default: { '@path': '$.context.device.id' }
+  },
+  idfa: {
+    label: 'IDFA',
+    description: 'iOS advertising identifier (IDFA). At least one device identifier is required.',
+    type: 'string',
+    required: false,
+    default: { '@path': '$.context.device.advertisingId' }
+  },
+  idfv: {
+    label: 'IDFV',
+    description: 'iOS vendor identifier (IDFV). At least one device identifier is required.',
+    type: 'string',
+    required: false
+  },
+  adid: {
+    label: 'ADID',
+    description: 'Android/Google advertising identifier (ADID). At least one device identifier is required.',
+    type: 'string',
+    required: false
+  },
+  android_id: {
+    label: 'Android ID',
+    description: 'Android device identifier. At least one device identifier is required.',
+    type: 'string',
+    required: false
+  },
+  device_ua: {
+    label: 'Device User Agent',
+    description: 'The device user agent string. Either this or Device OS Version is required for OS detection.',
+    type: 'string',
+    required: false,
+    default: { '@path': '$.context.userAgent' }
+  },
+  device_ver: {
+    label: 'Device OS Version',
+    description: 'The device OS version. Either this or Device User Agent is required for OS detection.',
+    type: 'string',
+    required: false,
+    default: { '@path': '$.context.os.version' }
+  },
+  origination_ip: {
+    label: 'Origination IP',
+    description: 'The IP address of the device.',
+    type: 'string',
+    required: false,
+    default: { '@path': '$.context.ip' }
+  },
+  app_version: {
+    label: 'App Version',
+    description: 'The version of the application.',
+    type: 'string',
+    required: false,
+    default: { '@path': '$.context.app.version' }
+  },
+  usertime: {
+    label: 'User Time',
+    description: 'The time the event occurred. Sent to Kochava as epoch seconds.',
+    type: 'datetime',
+    required: false,
+    default: { '@path': '$.timestamp' }
+  },
+  att: {
+    label: 'ATT Authorized',
+    description: 'iOS 14+ App Tracking Transparency authorization status.',
+    type: 'boolean',
+    required: false
+  },
+  att_time: {
+    label: 'ATT Time',
+    description: 'iOS 14+ App Tracking Transparency prompt time (epoch seconds).',
+    type: 'number',
+    required: false
+  },
+  att_duration: {
+    label: 'ATT Duration',
+    description: 'iOS 14+ App Tracking Transparency prompt duration in seconds.',
+    type: 'number',
+    required: false
+  },
+  att_detail: {
+    label: 'ATT Detail',
+    description: 'iOS 14+ App Tracking Transparency additional detail.',
+    type: 'string',
+    required: false
+  }
+}
diff --git a/packages/destination-actions/src/destinations/kochava/generated-types.ts b/packages/destination-actions/src/destinations/kochava/generated-types.ts
new file mode 100644
index 0000000000..61398795e0
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/generated-types.ts
@@ -0,0 +1,8 @@
+// Generated file. DO NOT MODIFY IT BY HAND.
+
+export interface Settings {
+  /**
+   * The Kochava App GUID (unique application identifier) found in the Kochava dashboard. Sent with every request.
+   */
+  kochava_app_id: string
+}
diff --git a/packages/destination-actions/src/destinations/kochava/index.ts b/packages/destination-actions/src/destinations/kochava/index.ts
new file mode 100644
index 0000000000..4f7d8575aa
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/index.ts
@@ -0,0 +1,49 @@
+import type { DestinationDefinition } from '@segment/actions-core'
+import { defaultValues } from '@segment/actions-core'
+import type { Settings } from './generated-types'
+
+import event from './event'
+import install from './install'
+
+const destination: DestinationDefinition<Settings> = {
+  name: 'Kochava (Actions)',
+  slug: 'actions-kochava',
+  mode: 'cloud',
+  description: 'Send install and post-install event data to Kochava for mobile attribution and analytics.',
+  authentication: {
+    scheme: 'custom',
+    fields: {
+      kochava_app_id: {
+        label: 'Kochava App ID',
+        description:
+          'The Kochava App GUID (unique application identifier) found in the Kochava dashboard. Sent with every request.',
+        type: 'string',
+        required: true
+      }
+    }
+    // Kochava's Server-to-Server API exposes no auth-verification endpoint; the App GUID
+    // is validated for presence via the required setting above, so there is no testAuthentication.
+  },
+  presets: [
+    {
+      name: 'Install Notification',
+      partnerAction: 'install',
+      subscribe: 'type = "track" and event = "Application Installed"',
+      mapping: defaultValues(install.fields),
+      type: 'automatic'
+    },
+    {
+      name: 'Post-Install Event',
+      partnerAction: 'event',
+      subscribe: 'type = "track" and event != "Application Installed"',
+      mapping: defaultValues(event.fields),
+      type: 'automatic'
+    }
+  ],
+  actions: {
+    event,
+    install
+  }
+}
+
+export default destination
diff --git a/packages/destination-actions/src/destinations/kochava/install/__tests__/index.test.ts b/packages/destination-actions/src/destinations/kochava/install/__tests__/index.test.ts
new file mode 100644
index 0000000000..0f5d94dc69
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/install/__tests__/index.test.ts
@@ -0,0 +1,90 @@
+import nock from 'nock'
+import { createTestEvent, createTestIntegration } from '@segment/actions-core'
+import Destination from '../../index'
+
+const testDestination = createTestIntegration(Destination)
+
+const settings = { kochava_app_id: 'ko-app-guid-123' }
+
+describe('Kochava.install', () => {
+  afterEach(() => {
+    nock.cleanAll()
+  })
+
+  it('sends an install notification with action "install" and device ids', async () => {
+    nock('https://control.kochava.com').post('/track/json').reply(200, {})
+
+    const event = createTestEvent({
+      type: 'track',
+      event: 'Application Installed',
+      timestamp: '2021-03-20T18:06:56.000Z',
+      context: {
+        device: { id: 'device-1', advertisingId: 'idfa-abc' },
+        os: { version: '15.3' },
+        app: { version: '3.3.0' },
+        userAgent: 'Mozilla/5.0 (iPhone)',
+        ip: '77.224.141.10'
+      }
+    })
+
+    const responses = await testDestination.testAction('install', {
+      event,
+      settings,
+      useDefaultMappings: true
+    })
+
+    expect(responses.length).toBe(1)
+    expect(responses[0].status).toBe(200)
+
+    const body = JSON.parse(responses[0].options.body as string)
+    expect(body.action).toBe('install')
+    expect(body.kochava_app_id).toBe('ko-app-guid-123')
+    expect(body.data.device_ids.idfa).toBe('idfa-abc')
+    expect(body.data.device_ver).toBe('15.3')
+    expect(body.data.app_version).toBe('3.3.0')
+    // install has no event_name
+    expect(body.data.event_name).toBeUndefined()
+  })
+
+  it('includes the App Tracking Transparency block and AdServices token when provided', async () => {
+    nock('https://control.kochava.com').post('/track/json').reply(200, {})
+
+    const event = createTestEvent({ type: 'track', event: 'Application Installed' })
+
+    const responses = await testDestination.testAction('install', {
+      event,
+      settings,
+      mapping: {
+        idfa: 'idfa-xyz',
+        device_ver: '15.0',
+        att: true,
+        att_time: 1616263616,
+        ad_services_token: 'as-token-1'
+      }
+    })
+
+    const body = JSON.parse(responses[0].options.body as string)
+    expect(body.data.app_tracking_transparency).toEqual({
+      att: true,
+      att_time: 1616263616,
+      att_duration: undefined,
+      att_detail: undefined
+    })
+    expect(body.data.ad_services_token).toBe('as-token-1')
+  })
+
+  it('throws a validation error when no device identifier is present', async () => {
+    const event = createTestEvent({ type: 'track', event: 'Application Installed' })
+
+    await expect(
+      testDestination.testAction('install', {
+        event,
+        settings,
+        mapping: {
+          idfa: '',
+          device_ver: '15.0'
+        }
+      })
+    ).rejects.toThrow('At least one device identifier')
+  })
+})
diff --git a/packages/destination-actions/src/destinations/kochava/install/generated-types.ts b/packages/destination-actions/src/destinations/kochava/install/generated-types.ts
new file mode 100644
index 0000000000..a011320888
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/install/generated-types.ts
@@ -0,0 +1,68 @@
+// Generated file. DO NOT MODIFY IT BY HAND.
+
+export interface Payload {
+  /**
+   * The Kochava App GUID. Overrides the Kochava App ID configured in Settings for this event.
+   */
+  kochava_app_id?: string
+  /**
+   * A consistent, unique device identifier. May be omitted when Device IDs are provided.
+   */
+  kochava_device_id?: string
+  /**
+   * iOS advertising identifier (IDFA). At least one device identifier is required.
+   */
+  idfa?: string
+  /**
+   * iOS vendor identifier (IDFV). At least one device identifier is required.
+   */
+  idfv?: string
+  /**
+   * Android/Google advertising identifier (ADID). At least one device identifier is required.
+   */
+  adid?: string
+  /**
+   * Android device identifier. At least one device identifier is required.
+   */
+  android_id?: string
+  /**
+   * The device user agent string. Either this or Device OS Version is required for OS detection.
+   */
+  device_ua?: string
+  /**
+   * The device OS version. Either this or Device User Agent is required for OS detection.
+   */
+  device_ver?: string
+  /**
+   * The IP address of the device.
+   */
+  origination_ip?: string
+  /**
+   * The version of the application.
+   */
+  app_version?: string
+  /**
+   * The time the event occurred. Sent to Kochava as epoch seconds.
+   */
+  usertime?: string | number
+  /**
+   * iOS 14+ App Tracking Transparency authorization status.
+   */
+  att?: boolean
+  /**
+   * iOS 14+ App Tracking Transparency prompt time (epoch seconds).
+   */
+  att_time?: number
+  /**
+   * iOS 14+ App Tracking Transparency prompt duration in seconds.
+   */
+  att_duration?: number
+  /**
+   * iOS 14+ App Tracking Transparency additional detail.
+   */
+  att_detail?: string
+  /**
+   * iOS 14+ Apple AdServices attribution token.
+   */
+  ad_services_token?: string
+}
diff --git a/packages/destination-actions/src/destinations/kochava/install/index.ts b/packages/destination-actions/src/destinations/kochava/install/index.ts
new file mode 100644
index 0000000000..4ba1b41ede
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/install/index.ts
@@ -0,0 +1,26 @@
+import type { ActionDefinition } from '@segment/actions-core'
+import type { Settings } from '../generated-types'
+import type { Payload } from './generated-types'
+import { commonFields } from '../fields'
+import { KochavaAction } from '../constants'
+import { sendEvent } from '../utils'
+
+const action: ActionDefinition<Settings, Payload> = {
+  title: 'Install Notification',
+  description: 'Send an app install notification to Kochava for attribution.',
+  defaultSubscription: 'type = "track" and event = "Application Installed"',
+  fields: {
+    ...commonFields,
+    ad_services_token: {
+      label: 'AdServices Token',
+      description: 'iOS 14+ Apple AdServices attribution token.',
+      type: 'string',
+      required: false
+    }
+  },
+  perform: (request, { payload, settings }) => {
+    return sendEvent(request, settings, payload, KochavaAction.Install)
+  }
+}
+
+export default action
diff --git a/packages/destination-actions/src/destinations/kochava/metadata.json b/packages/destination-actions/src/destinations/kochava/metadata.json
new file mode 100644
index 0000000000..a89d16b128
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/metadata.json
@@ -0,0 +1,1000 @@
+{
+  "slug": "actions-kochava",
+  "name": "Kochava (Actions)",
+  "mode": "cloud",
+  "description": "Send install and post-install event data to Kochava for mobile attribution and analytics.",
+  "authentication": {
+    "scheme": "custom",
+    "fields": {
+      "kochava_app_id": {
+        "label": "Kochava App ID",
+        "description": "The Kochava App GUID (unique application identifier) found in the Kochava dashboard. Sent with every request.",
+        "type": "string",
+        "required": true,
+        "multiple": false,
+        "choices": null,
+        "default": null,
+        "depends_on": null
+      }
+    }
+  },
+  "audienceConfig": null,
+  "actions": {
+    "event": {
+      "title": "Post-Install Event",
+      "description": "Send a post-install in-app event (e.g. purchase, subscription) to Kochava.",
+      "platform": "cloud",
+      "defaultSubscription": "type = \"track\" and event != \"Application Installed\"",
+      "hidden": false,
+      "hasPerformBatch": false,
+      "syncMode": null,
+      "hooks": null,
+      "dynamicFields": null,
+      "fields": {
+        "kochava_app_id": {
+          "label": "Kochava App ID",
+          "description": "The Kochava App GUID. Overrides the Kochava App ID configured in Settings for this event.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "kochava_device_id": {
+          "label": "Kochava Device ID",
+          "description": "A consistent, unique device identifier. May be omitted when Device IDs are provided.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.device.id"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "idfa": {
+          "label": "IDFA",
+          "description": "iOS advertising identifier (IDFA). At least one device identifier is required.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.device.advertisingId"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "idfv": {
+          "label": "IDFV",
+          "description": "iOS vendor identifier (IDFV). At least one device identifier is required.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "adid": {
+          "label": "ADID",
+          "description": "Android/Google advertising identifier (ADID). At least one device identifier is required.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "android_id": {
+          "label": "Android ID",
+          "description": "Android device identifier. At least one device identifier is required.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "device_ua": {
+          "label": "Device User Agent",
+          "description": "The device user agent string. Either this or Device OS Version is required for OS detection.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.userAgent"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "device_ver": {
+          "label": "Device OS Version",
+          "description": "The device OS version. Either this or Device User Agent is required for OS detection.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.os.version"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "origination_ip": {
+          "label": "Origination IP",
+          "description": "The IP address of the device.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.ip"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "app_version": {
+          "label": "App Version",
+          "description": "The version of the application.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.app.version"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "usertime": {
+          "label": "User Time",
+          "description": "The time the event occurred. Sent to Kochava as epoch seconds.",
+          "type": "datetime",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.timestamp"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "att": {
+          "label": "ATT Authorized",
+          "description": "iOS 14+ App Tracking Transparency authorization status.",
+          "type": "boolean",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "att_time": {
+          "label": "ATT Time",
+          "description": "iOS 14+ App Tracking Transparency prompt time (epoch seconds).",
+          "type": "number",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "att_duration": {
+          "label": "ATT Duration",
+          "description": "iOS 14+ App Tracking Transparency prompt duration in seconds.",
+          "type": "number",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "att_detail": {
+          "label": "ATT Detail",
+          "description": "iOS 14+ App Tracking Transparency additional detail.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "event_name": {
+          "label": "Event Name",
+          "description": "The name of the event.",
+          "type": "string",
+          "required": true,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.event"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "event_data": {
+          "label": "Event Data",
+          "description": "Free-form event values (e.g. id, name, sum) associated with the event.",
+          "type": "object",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.properties"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "currency": {
+          "label": "Currency",
+          "description": "The currency code for revenue events (e.g. \"USD\").",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.properties.currency"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "ad_tracking_enabled": {
+          "label": "Ad Tracking Enabled",
+          "description": "Whether ad tracking is enabled on the device. Sent to Kochava as the inverse (device_limit_tracking).",
+          "type": "boolean",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.device.adTrackingEnabled"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        }
+      }
+    },
+    "install": {
+      "title": "Install Notification",
+      "description": "Send an app install notification to Kochava for attribution.",
+      "platform": "cloud",
+      "defaultSubscription": "type = \"track\" and event = \"Application Installed\"",
+      "hidden": false,
+      "hasPerformBatch": false,
+      "syncMode": null,
+      "hooks": null,
+      "dynamicFields": null,
+      "fields": {
+        "kochava_app_id": {
+          "label": "Kochava App ID",
+          "description": "The Kochava App GUID. Overrides the Kochava App ID configured in Settings for this event.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "kochava_device_id": {
+          "label": "Kochava Device ID",
+          "description": "A consistent, unique device identifier. May be omitted when Device IDs are provided.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.device.id"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "idfa": {
+          "label": "IDFA",
+          "description": "iOS advertising identifier (IDFA). At least one device identifier is required.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.device.advertisingId"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "idfv": {
+          "label": "IDFV",
+          "description": "iOS vendor identifier (IDFV). At least one device identifier is required.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "adid": {
+          "label": "ADID",
+          "description": "Android/Google advertising identifier (ADID). At least one device identifier is required.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "android_id": {
+          "label": "Android ID",
+          "description": "Android device identifier. At least one device identifier is required.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "device_ua": {
+          "label": "Device User Agent",
+          "description": "The device user agent string. Either this or Device OS Version is required for OS detection.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.userAgent"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "device_ver": {
+          "label": "Device OS Version",
+          "description": "The device OS version. Either this or Device User Agent is required for OS detection.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.os.version"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "origination_ip": {
+          "label": "Origination IP",
+          "description": "The IP address of the device.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.ip"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "app_version": {
+          "label": "App Version",
+          "description": "The version of the application.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.context.app.version"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "usertime": {
+          "label": "User Time",
+          "description": "The time the event occurred. Sent to Kochava as epoch seconds.",
+          "type": "datetime",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": {
+            "@path": "$.timestamp"
+          },
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "att": {
+          "label": "ATT Authorized",
+          "description": "iOS 14+ App Tracking Transparency authorization status.",
+          "type": "boolean",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "att_time": {
+          "label": "ATT Time",
+          "description": "iOS 14+ App Tracking Transparency prompt time (epoch seconds).",
+          "type": "number",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "att_duration": {
+          "label": "ATT Duration",
+          "description": "iOS 14+ App Tracking Transparency prompt duration in seconds.",
+          "type": "number",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "att_detail": {
+          "label": "ATT Detail",
+          "description": "iOS 14+ App Tracking Transparency additional detail.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        },
+        "ad_services_token": {
+          "label": "AdServices Token",
+          "description": "iOS 14+ Apple AdServices attribution token.",
+          "type": "string",
+          "required": false,
+          "multiple": false,
+          "allowNull": false,
+          "dynamic": false,
+          "default": null,
+          "choices": null,
+          "placeholder": null,
+          "properties": null,
+          "category": null,
+          "depends_on": null,
+          "readOnly": null,
+          "hidden": null,
+          "minimum": null,
+          "maximum": null,
+          "defaultObjectUI": null,
+          "disabledInputMethods": null,
+          "displayMode": null,
+          "format": null,
+          "additionalProperties": false
+        }
+      }
+    }
+  },
+  "presets": [
+    {
+      "name": "Install Notification",
+      "type": "automatic",
+      "partnerAction": "install",
+      "subscribe": "type = \"track\" and event = \"Application Installed\"",
+      "mapping": {
+        "kochava_device_id": {
+          "@path": "$.context.device.id"
+        },
+        "idfa": {
+          "@path": "$.context.device.advertisingId"
+        },
+        "device_ua": {
+          "@path": "$.context.userAgent"
+        },
+        "device_ver": {
+          "@path": "$.context.os.version"
+        },
+        "origination_ip": {
+          "@path": "$.context.ip"
+        },
+        "app_version": {
+          "@path": "$.context.app.version"
+        },
+        "usertime": {
+          "@path": "$.timestamp"
+        }
+      },
+      "eventSlug": null
+    },
+    {
+      "name": "Post-Install Event",
+      "type": "automatic",
+      "partnerAction": "event",
+      "subscribe": "type = \"track\" and event != \"Application Installed\"",
+      "mapping": {
+        "kochava_device_id": {
+          "@path": "$.context.device.id"
+        },
+        "idfa": {
+          "@path": "$.context.device.advertisingId"
+        },
+        "device_ua": {
+          "@path": "$.context.userAgent"
+        },
+        "device_ver": {
+          "@path": "$.context.os.version"
+        },
+        "origination_ip": {
+          "@path": "$.context.ip"
+        },
+        "app_version": {
+          "@path": "$.context.app.version"
+        },
+        "usertime": {
+          "@path": "$.timestamp"
+        },
+        "event_name": {
+          "@path": "$.event"
+        },
+        "event_data": {
+          "@path": "$.properties"
+        },
+        "currency": {
+          "@path": "$.properties.currency"
+        },
+        "ad_tracking_enabled": {
+          "@path": "$.context.device.adTrackingEnabled"
+        }
+      },
+      "eventSlug": null
+    }
+  ]
+}
diff --git a/packages/destination-actions/src/destinations/kochava/types.ts b/packages/destination-actions/src/destinations/kochava/types.ts
new file mode 100644
index 0000000000..a6769dd665
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/types.ts
@@ -0,0 +1,70 @@
+import type { KochavaActionType } from './constants'
+
+export interface KochavaDeviceIds {
+  idfa?: string
+  idfv?: string
+  adid?: string
+  android_id?: string
+  [key: string]: string | undefined
+}
+
+export interface KochavaAppTrackingTransparency {
+  att?: boolean
+  att_time?: number
+  att_duration?: number
+  att_detail?: string
+}
+
+export interface KochavaData {
+  device_ids: KochavaDeviceIds
+  device_ua?: string
+  device_ver?: string
+  origination_ip?: string
+  app_version?: string
+  usertime?: number
+  device_limit_tracking?: boolean
+  event_name?: string
+  event_data?: Record<string, unknown>
+  currency?: string
+  app_tracking_transparency?: KochavaAppTrackingTransparency
+  ad_services_token?: string
+}
+
+export interface KochavaTrackRequest {
+  action: KochavaActionType
+  kochava_app_id: string
+  kochava_device_id?: string
+  data: KochavaData
+}
+
+export interface KochavaResponse {
+  status?: string
+}
+
+/**
+ * Structural superset of both action payloads (event + install). Every field is
+ * optional so the generated per-action `Payload` types are assignable to it, which
+ * lets `utils.ts` build a request body from either action without duplication.
+ */
+export interface KochavaActionPayload {
+  kochava_app_id?: string
+  kochava_device_id?: string
+  idfa?: string
+  idfv?: string
+  adid?: string
+  android_id?: string
+  device_ua?: string
+  device_ver?: string
+  origination_ip?: string
+  app_version?: string
+  usertime?: string | number
+  ad_tracking_enabled?: boolean
+  event_name?: string
+  event_data?: Record<string, unknown>
+  currency?: string
+  att?: boolean
+  att_time?: number
+  att_duration?: number
+  att_detail?: string
+  ad_services_token?: string
+}
diff --git a/packages/destination-actions/src/destinations/kochava/utils.ts b/packages/destination-actions/src/destinations/kochava/utils.ts
new file mode 100644
index 0000000000..38863ec6ca
--- /dev/null
+++ b/packages/destination-actions/src/destinations/kochava/utils.ts
@@ -0,0 +1,116 @@
+import type { RequestClient } from '@segment/actions-core'
+import { PayloadValidationError } from '@segment/actions-core'
+import type { Settings } from './generated-types'
+import { TRACK_ENDPOINT } from './constants'
+import type { KochavaActionType } from './constants'
+import type {
+  KochavaActionPayload,
+  KochavaAppTrackingTransparency,
+  KochavaData,
+  KochavaDeviceIds,
+  KochavaResponse,
+  KochavaTrackRequest
+} from './types'
+
+/**
+ * Convert a Segment timestamp (ISO string, Date, or epoch ms) into Kochava's
+ * `usertime`, which the API expects as epoch **seconds**.
+ */
+function toEpochSeconds(value?: string | number): number | undefined {
+  if (value === undefined || value === null || value === '') return undefined
+  const ms = new Date(value).getTime()
+  if (Number.isNaN(ms)) return undefined
+  return Math.floor(ms / 1000)
+}
+
+/**
+ * Assemble Kochava's `device_ids` object from the individual identifier fields,
+ * keeping only those with a non-empty value.
+ */
+function buildDeviceIds(payload: KochavaActionPayload): KochavaDeviceIds {
+  const result: KochavaDeviceIds = {}
+  const candidates: Array<[keyof KochavaDeviceIds, string | undefined]> = [
+    ['idfa', payload.idfa],
+    ['idfv', payload.idfv],
+    ['adid', payload.adid],
+    ['android_id', payload.android_id]
+  ]
+  for (const [key, val] of candidates) {
+    if (val !== undefined && val !== null && String(val).length > 0) {
+      result[key] = String(val)
+    }
+  }
+  return result
+}
+
+function buildAppTrackingTransparency(payload: KochavaActionPayload): KochavaAppTrackingTransparency | undefined {
+  const { att, att_time, att_duration, att_detail } = payload
+  if (att === undefined && att_time === undefined && att_duration === undefined && att_detail === undefined) {
+    return undefined
+  }
+  return { att, att_time, att_duration, att_detail }
+}
+
+function buildData(payload: KochavaActionPayload, deviceIds: KochavaDeviceIds): KochavaData {
+  const data: KochavaData = {
+    device_ids: deviceIds,
+    // Kochava expects a URL-encoded user agent string.
+    device_ua: payload.device_ua ? encodeURIComponent(payload.device_ua) : undefined,
+    device_ver: payload.device_ver,
+    origination_ip: payload.origination_ip,
+    app_version: payload.app_version,
+    usertime: toEpochSeconds(payload.usertime),
+    event_name: payload.event_name,
+    event_data: payload.event_data,
+    currency: payload.currency,
+    ad_services_token: payload.ad_services_token,
+    app_tracking_transparency: buildAppTrackingTransparency(payload)
+  }
+
+  // `device_limit_tracking` is the inverse of Segment's `context.device.adTrackingEnabled`.
+  if (payload.ad_tracking_enabled !== undefined) {
+    data.device_limit_tracking = !payload.ad_tracking_enabled
+  }
+
+  return data
+}
+
+/**
+ * Build a fully-typed Kochava /track/json request body for the given action.
+ * Throws PayloadValidationError when Kochava's minimum requirements aren't met.
+ */
+export function buildTrackRequest(
+  payload: KochavaActionPayload,
+  settings: Settings,
+  action: KochavaActionType
+): KochavaTrackRequest {
+  const kochavaAppId = payload.kochava_app_id || settings.kochava_app_id
+  if (!kochavaAppId) {
+    throw new PayloadValidationError('A Kochava App ID (App GUID) is required.')
+  }
+
+  const deviceIds = buildDeviceIds(payload)
+  if (Object.keys(deviceIds).length === 0) {
+    throw new PayloadValidationError('At least one device identifier (IDFA, IDFV, ADID, or Android ID) is required.')
+  }
+
+  return {
+    action,
+    kochava_app_id: kochavaAppId,
+    kochava_device_id: payload.kochava_device_id,
+    data: buildData(payload, deviceIds)
+  }
+}
+
+export function sendEvent(
+  request: RequestClient,
+  settings: Settings,
+  payload: KochavaActionPayload,
+  action: KochavaActionType
+) {
+  const body = buildTrackRequest(payload, settings, action)
+  return request<KochavaResponse>(TRACK_ENDPOINT, {
+    method: 'POST',
+    json: body
+  })
+}