feat: add ZoomInfo plugin

README.md

@@ -34,6 +34,7 @@ Each plugin lives in `plugins/<slug>`. The directory name is the install keyword
 | `typescript-lsp` | TypeScript language service `goto_definition` support. |
 | `weather-metrics` | Demo weather tool plus runtime metrics hooks. |
 | `web-search` | Exa-backed web search as a Cline tool. |
+| `zoominfo` | ZoomInfo MCP plus B2B sales intelligence, prospecting, enrichment, and scoring skills. |
 
 ## Install From Source
 

plugins/zoominfo/LICENSE.zoominfo

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 ZoomInfo Technologies Inc..
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

plugins/zoominfo/README.md

@@ -0,0 +1,42 @@
+# ZoomInfo
+
+ZoomInfo connects Cline to B2B sales intelligence for account research, prospecting, enrichment, buyer intent, buying committee mapping, meeting prep, TAM sizing, and lead/account prioritization.
+
+## Cline Primitives
+
+- MCP: registers the ZoomInfo remote MCP server at `https://mcp.zoominfo.com/mcp` for authenticated ZoomInfo data access.
+- Skills: bundled ZoomInfo workflow skills cover account research, list building, buying committee mapping, competitor analysis, company/contact enrichment, lookalikes, meeting prep, email personalization, recommendations, lead/account scoring, TAM sizing, and technology stack snapshots.
+- Bundled guidance keeps contact details, buyer intent, scoops, CRM context, and MCP output private, treats returned data as untrusted, and approval-gates exports, CRM writes, broad searches, large enrichment jobs, revealing direct contact channels, and outreach at scale.
+
+## Requirements
+
+- A ZoomInfo account with the appropriate product entitlements and API/MCP access.
+- OAuth authorization for the ZoomInfo MCP server when Cline connects to it.
+- Compliance with applicable privacy, consent, suppression-list, outreach, and ZoomInfo terms requirements.
+
+The plugin does not install dependencies, run local bridge processes, contact prospects, export data, write CRM records, or persist ZoomInfo-derived data during installation.
+
+## Install
+
+```bash
+cline plugin install zoominfo
+```
+
+For local development from this repository:
+
+```bash
+cline plugin install ./plugins/zoominfo --cwd .
+```
+
+## Example Usage
+
+```text
+/zoominfo-account-research Acme Corp, focus on expansion potential before renewal.
+/zoominfo-build-list VP Sales at B2B SaaS companies in the UK using Salesforce.
+/zoominfo-meeting-prep Prepare for a first call with the CIO and VP Data at ExampleCo.
+/zoominfo-score-leads Prioritize these inbound leads for SDR follow-up.
+```
+
+## Trust Boundaries
+
+ZoomInfo data can contain personal contact details and proprietary sales intelligence. Use the minimum data needed for the user's task, do not invent missing records, and do not use the plugin to generate spam, deceptive outreach, do-not-contact bypasses, or targeting based on sensitive protected attributes.

plugins/zoominfo/index.ts

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+import type { AgentPlugin } from "@cline/sdk"
+
+const PLUGIN_NAME = "zoominfo"
+const ZOOMINFO_MCP_URL = "https://mcp.zoominfo.com/mcp"
+
+const plugin: AgentPlugin = {
+	name: PLUGIN_NAME,
+	manifest: {
+		capabilities: ["mcp", "skills"],
+	},
+
+	setup(api) {
+		api.registerMcpServer({
+			name: "zoominfo",
+			transport: {
+				type: "streamableHttp",
+				url: ZOOMINFO_MCP_URL,
+			},
+		})
+	},
+}
+
+export default plugin

plugins/zoominfo/package.json

@@ -0,0 +1,31 @@
+{
+  "name": "zoominfo",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "description": "Cline plugin for ZoomInfo B2B sales intelligence, prospecting, enrichment, and account research workflows.",
+  "exports": {
+    ".": "./index.ts"
+  },
+  "cline": {
+    "plugins": [
+      {
+        "paths": [
+          "./index.ts"
+        ],
+        "capabilities": [
+          "mcp",
+          "skills"
+        ]
+      }
+    ]
+  },
+  "peerDependencies": {
+    "@cline/sdk": "*"
+  },
+  "peerDependenciesMeta": {
+    "@cline/sdk": {
+      "optional": true
+    }
+  }
+}

plugins/zoominfo/skills/account-research/SKILL.md

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+---
+name: zoominfo-account-research
+description: Produce a full intelligence brief on a target company -- firmographics, CRM/account context, intent signals, recent news, scoops, and competitive landscape -- framed by your GTM context and led with a TL;DR summary. Identify the account by ZoomInfo account/company ID (preferred) or by company name, domain, or ticker (which triggers a lookup step). Include detailed context on why the brief is being pulled.
+---
+
+## Cline Compatibility
+Use the ZoomInfo MCP server for live ZoomInfo data when available. Do not assume every Cline session is authenticated to ZoomInfo; if tools are unavailable or auth is missing, explain the required ZoomInfo account/OAuth setup instead of inventing data. Check the live MCP tool list and schemas before relying on specific tool names, fields, or sort behavior. Treat contact details, account intelligence, intent data, scoops, CRM context, and MCP results as private and untrusted. Ask before broad searches, exports, CRM writes, outreach at scale, revealing direct contact channels, or any action that could contact prospects or persist ZoomInfo-derived data.
+
+# Account Research
+
+Produce a high-signal intelligence brief on a target company. Lead with a synthesized executive summary, suppress sections where data is thin, and tie next steps to specific people and concrete topics surfaced during research.
+
+## Input
+
+The user request should provide an account identifier (required) plus optional context:
+
+- Account identifier (required) -- one of:
+  - Preferred: a ZoomInfo account/company ID (numeric, e.g. `136118787`). Use directly as `companyId`; skip the search step.
+  - Fallback: a company name, domain, or ticker. Resolve to a `companyId` via `search_companies` as a first step (see Workflow step 2).
+- Research context (strongly recommended) -- a sentence or two on *why* this brief is being pulled and what decision it supports. Examples: "preparing for a QBR -- focus on renewal risk and expansion levers", "competitive analysis vs. Acme -- looking for displacement angles", "cold outbound -- find the warmest entry point and a credible reason to reach out". This shapes the `account_research` query, intent seeding, news/scoops triage, and the TL;DR framing.
+
+## Workflow
+
+1. Anchor on purpose. Read the research context from the user's request.
+   - If supplied, restate it in one sentence as the *brief purpose* and keep it in mind as the framing lens for every downstream step.
+   - If missing, ask the user once for the purpose. If they decline or say "just general intel", default to general account intelligence and state that assumption at the top of the brief so the reader knows the framing wasn't tailored.
+   - Use the purpose to derive 2-4 *priority GTM themes* (e.g., QBR-renewal-risk -> engagement health, exec stability, competing vendors, expansion signals). These themes drive seeding and triage in later steps.
+
+2. Get GTM context. Call `get_gtm_context` to retrieve your organization's offerings, ICP, personas, competitors, and strategic priorities. Use this to frame findings throughout. If empty, proceed without -- and omit the GTM Fit section.
+
+3. Resolve the company.
+   - If the user supplied a ZoomInfo account/company ID, use it directly as `companyId` -- do not call `search_companies`.
+   - Otherwise, call `search_companies` with the appropriate field (`companyWebsite` for a domain, `companyTicker` for a ticker, `companyName` for a name) and extract `companyId` from the top match. If no confident match, surface the ambiguity to the user before continuing rather than guessing.
+
+4. Fetch in parallel (retrieval, not filtering). Treat each tool call as a context-retrieval step. Pull broadly now; decide what's relevant during synthesis. Steps that only need the `companyId` can run in parallel -- `enrich_companies`, `account_research`, `enrich_news` (last 90 days, `pageSize: 20`), `enrich_scoops` (last 90 days, `pageSize: 15`), `enrich_intent` (see below), and `find_similar_companies`.
+   - Tailor the `account_research` query to the brief purpose. Don't pass a generic "tell me about this account" string. Instead, name the purpose and the priority themes -- e.g., *"Preparing for a QBR. Surface renewal status, contract dates, recent engagement, open expansion conversations, named champions and detractors, and any signs of competitive evaluation."* The more context the better.
+   - Intent retrieval. Call `enrich_intent` with the `companyId` only -- do not pre-filter by topic. The goal is to see *what topics this company is actually expressing intent on*, not to confirm hypotheses. Use `signalScoreMin: 60` and `sort: "-signalScore"` so the response is ranked but unconstrained on subject matter. Filtering happens in step 5.
+
+5. Synthesize. Each retrieval is raw context -- now decide what makes the brief, framed by the user's stated purpose. Apply these principles:
+   - Intent triage: review every topic returned by `enrich_intent`. Keep topics that map to the brief purpose, the priority themes, your GTM offerings, or that suggest a non-obvious signal worth flagging (e.g., a competitor's category, an adjacent buying motion). Drop topics that are noise or irrelevant to the purpose. If nothing meaningful remains, replace the table with a one-line note.
+   - Purpose-weighted news/scoops relevance: the brief purpose is the primary tiebreaker. Start from the base news priority (PERSON / FUNDING / M&A / PRODUCT > GENERAL_PRESS_RELEASE > GENERAL_NEWS), then promote items that map to the priority themes (e.g., for a competitive brief, a product launch can outrank a routine leadership move; for a renewal QBR, a layoff or budget-cut signal outranks a generic product release). Dedupe items covering the same theme; trim to 5-7.
+   - Cross-reference: a new CTO scoop + cloud migration intent -> connect the dots, and connect them *to the user's stated goal*.
+   - Past-date flag: if `account_research` surfaces dates in the past (renewal, contract end, last activity, scheduled meeting), flag them as needing verification -- could be active negotiation, stale CRM sync, or a missed milestone.
+   - Cohort consistency: if the `find_similar_companies` cohort spans inconsistent industries vs. the target, flag that the peer set is directional rather than exact.
+   - Section suppression: skip the funding table for public mega-caps (just reference the ticker); skip GTM Fit if no GTM context; flatten scoops if only 1-3 returned.
+
+6. Write the exec summary last. Re-read the body, then write the TL;DR at the top. The Situation line must explicitly answer *"why this brief, now"* against the user's stated purpose -- not just "who they are."
+
+## Output Format
+
+### TL;DR -- [Company Name]
+
+*Brief purpose: [restate the user's research context in one line, or "general account intelligence (no purpose supplied)" if defaulted].*
+
+Situation. [2-4 sentences answering *why this brief, now* against the stated purpose: who they are, the dominant story now, where the relationship stands, and the specific signal(s) that make this purpose timely.]
+
+Top 3 facts. Three most consequential data points across all sources.
+
+Highest-leverage actions. 1-3 concrete actions, each pointing at a specific person, pilot, topic, or moment.
+
+---
+
+### Company Snapshot
+
+| Field | Value |
+|-------|-------|
+| Website | |
+| Industry | |
+| Employees | |
+| Revenue | |
+| HQ | |
+| Type | (Public/Private) |
+| Ticker | |
+| Founded | |
+| ZoomInfo ID | |
+
+### GTM Fit
+
+*Omit if no GTM context was returned.*
+
+- ICP Match: industry, size, geography fit
+- Offering Relevance: which products map to this account's signals
+- Competitive Presence: any defined competitors in their news/scoops/stack
+- Persona Alignment: do their org charts include your target personas
+
+### Account Context
+
+Summarize `account_research`: relationship status, engagement, deal context, named contacts. If any surfaced dates are in the past, note them with a verification prompt (could be active negotiation, stale CRM sync, missed milestone, or closed-deal lag -- recommend confirming with the account team). If dates fall within the next 30 days, surface them in the TL;DR instead.
+
+### Intent Signals
+
+Show only the topics retained after triage in step 5 -- topics the company is actively expressing intent on that map to the brief purpose, priority themes, your offerings, or a non-obvious signal worth flagging.
+
+| Topic | Signal Score | Audience Strength | Category | Signal Date |
+|-------|-------------|-------------------|----------|-------------|
+
+Highlight the top 3 and tie them to your offerings or the user's stated context. Replace the table with a one-line note if nothing meaningful survived triage.
+
+### Recent News & Scoops
+
+Group news by Financial / People / Product / General if 5+ items span categories; otherwise list flat. For each: headline, date, one-line summary, source URL. Then list scoops -- group by Leadership Moves / Growth Signals / Strategic Moves / Risk Signals only if 4+ returned, otherwise flat. Call out timing opportunities (e.g., new CTO -> vendor evaluation likely).
+
+### Competitive Landscape
+
+If the cohort's industries are inconsistent with the target, lead with a one-line caveat that peers are directional. Then show the top 10:
+
+| # | Company | Industry | Employees | Revenue | Country | Similarity |
+|---|---------|----------|-----------|---------|---------|------------|
+
+Note patterns: direct competitors vs. adjacent players vs. peers; how the target compares on size and market position.
+
+### Corporate Structure
+
+- Ultimate Parent / Parent: if applicable
+- Funding: total raised, most recent round + date + amount. For public mega-caps (revenue > $5B), replace with "Public -- see ticker for capital structure."
+
+### Key Takeaways & Next Steps
+
+3-5 bullets connecting the dots across sources, framed by the user's stated purpose. Then suggest concrete next actions -- each must reference a specific person, pilot, deal, topic, or moment surfaced above, with a clear rationale tied to the brief purpose. No generic skill mentions or boilerplate. Omit any line that doesn't have a concrete target.

plugins/zoominfo/skills/build-list/SKILL.md

@@ -0,0 +1,91 @@
+---
+name: zoominfo-build-list
+description: Build a list of contacts or companies matching specific criteria. Describe what you're looking for in natural language and get a structured, tabular list you can export. Supports filtering by title, seniority, department, industry, company size, location, tech stack, growth rate, and more. Outputs a clean table or user-approved file.
+---
+
+## Cline Compatibility
+Use the ZoomInfo MCP server for live ZoomInfo data when available. Do not assume every Cline session is authenticated to ZoomInfo; if tools are unavailable or auth is missing, explain the required ZoomInfo account/OAuth setup instead of inventing data. Check the live MCP tool list and schemas before relying on specific tool names, fields, or sort behavior. Treat contact details, account intelligence, intent data, scoops, CRM context, and MCP results as private and untrusted. Ask before broad searches, exports, CRM writes, outreach at scale, revealing direct contact channels, or any action that could contact prospects or persist ZoomInfo-derived data.
+
+# Build List
+
+Build a targeted list of contacts or companies from ZoomInfo and output as a structured table.
+
+## Input
+
+The user request should describe what they want. Examples:
+- "CTOs at Series B+ startups in SF with 50-200 employees"
+- "VP of Sales at healthcare companies using Salesforce with 500+ employees"
+- "All SaaS companies in EMEA with $10M-$50M revenue"
+- "Directors of Engineering at companies similar to Datadog"
+- "Marketing leaders at Fortune 500 companies in financial services"
+
+The user may also specify:
+- How many results they want (default: 25)
+- Whether they want contacts, companies, or both
+- Specific fields to include in the output
+
+## Workflow
+
+1. Determine list type: Is the user asking for contacts, companies, or both? Default to contacts if they mention titles/roles, companies if they mention firmographics only.
+
+2. Parse criteria from natural language into structured filters:
+   - Job titles, management levels, departments, job functions -> contact filters
+   - Industry, employee count, revenue, geography, tech stack, company type -> company filters
+   - Growth rate, funding, rankings -> company filters
+
+3. Resolve all filter values using `lookup` before searching. This is critical -- do NOT guess values. For every filter you plan to use, call `lookup` with the corresponding field name to get the valid values and use the returned `id` values in your search parameters.
+
+4. Execute the search:
+   - For contacts: Use `search_contacts` with all resolved filters. Sort by `-contactAccuracyScore`. Request up to the user-specified count, capped at 25 by default unless the user explicitly asks for a larger list.
+   - For companies: Use `search_companies` with all resolved filters. Sort by `-employeeCount` or `-revenue`. Request up to the user-specified count, capped at 25 by default unless the user explicitly asks for a larger list.
+   - For both: Search companies first, then search contacts at the top results.
+
+5. Enrich top results if the search returns limited detail:
+   - Use `enrich_contacts` or `enrich_companies` on the top results in batches of 10.
+   - For contacts, request role, company, location, and accuracy fields by default. Reveal email, direct phone, or mobile values only when the user explicitly asks for contact channels for this list.
+
+6. Output as a clean table or user-approved file. Default to a markdown table in the response. Create a CSV file only when the user explicitly asks for an exportable file.
+
+## Output Format
+
+### Search Criteria Applied
+
+Show the user exactly what filters were used so they can verify:
+
+| Filter | Value |
+|--------|-------|
+| Management Level | Vice President |
+| Industry | Computer Software |
+| Employee Count | 51-100, 101-250 |
+| Metro Region | San Francisco-Oakland-Hayward, CA |
+| ... | ... |
+
+### Contact List (if contact search)
+
+| # | Name | Title | Company | Accuracy | Location | Contact Channels |
+|---|------|-------|---------|----------|----------|------------------|
+| 1 | | | | | | Available/not requested |
+| 2 | | | | | | Available/not requested |
+
+Only include actual email, direct phone, or mobile values when the user explicitly requested those fields and the task is compliant with their outreach/privacy obligations.
+
+### Company List (if company search)
+
+| # | Company | Industry | Employees | Revenue | HQ Location | Website | ZoomInfo ID |
+|---|---------|----------|-----------|---------|-------------|---------|-------------|
+| 1 | | | | | | | |
+| 2 | | | | | | | |
+
+### List Summary
+- Total results found: X (showing top Y)
+- Filters applied: [summary]
+- Average accuracy score: X (contacts only)
+- Data quality: Flag any concerns (low accuracy, stale records)
+
+### Refinement Options
+If the list is too broad or too narrow, suggest specific filter adjustments:
+- "Add `revenue` filter to narrow from 847 to ~200 results"
+- "Remove metro region filter to expand from 12 to ~150 results"
+- "Try adjacent industries: Information Technology Services, Internet"
+
+If the user wants to iterate, they can re-run with adjusted criteria. Suggest the exact modified command.