diff --git a/.changeset/21955-spec-redaction-driver-identity.md b/.changeset/21955-spec-redaction-driver-identity.md
new file mode 100644
index 00000000000..759ef51e8b8
--- /dev/null
+++ b/.changeset/21955-spec-redaction-driver-identity.md
@@ -0,0 +1,12 @@
+---
+'@objectstack/spec': patch
+---
+
+The datasource read redaction resolves a driver's identity the way its sibling helper does. The per-driver half of `redactableConfigKeys` now looks a driver up through `resolveDriverId`, the resolver `passthroughSecretPaths` and the write door's contract lookup already use. So every spelling the write door accepts as a builtin driver is redacted as that driver.
+
+Clause-②: no
+
+- The still-writable credential key is withheld on the datasource admin read (`GET /api/v1/datasources/:name`) and on the metadata read under every accepted spelling of its driver, and `redactedConfigKeys` names it.
+- A crafted driver id that made the read throw now answers as a driver the platform ships no contract for: the canonical credential spellings and the former aliases are withheld, and the read succeeds.
+- `restoreRedactedConfig` and the credential migration read the same list, so an untouched Save still restores the stored value under every accepted spelling, and the migration names the still-writable key as residue there too.
+- Unchanged: what the write door accepts, every export and its type, and the answer for a canonical spelling.
diff --git a/packages/services/service-datasource/src/__tests__/datasource-config-redaction.test.ts b/packages/services/service-datasource/src/__tests__/datasource-config-redaction.test.ts
index 635dada2872..bcdf1226c84 100644
--- a/packages/services/service-datasource/src/__tests__/datasource-config-redaction.test.ts
+++ b/packages/services/service-datasource/src/__tests__/datasource-config-redaction.test.ts
@@ -39,7 +39,7 @@
  */
 
 import { describe, it, expect } from 'vitest';
-import { validateDriverConfig, getDriverConfigSchema, BUILTIN_DRIVER_IDS } from '@objectstack/spec/data';
+import { validateDriverConfig, getDriverConfigSchema, BUILTIN_DRIVER_IDS, DRIVER_ID_ALIASES } from '@objectstack/spec/data';
 import {
   redactDatasourceConfig,
   restoreRedactedConfig,
@@ -603,3 +603,77 @@ describe('nested credential positions OFF the passthrough table — the class co
     expect((records[0].config!.replication as any).url).toBe('postgresql://svc@other-replica/db');
   });
 });
+
+// Lockstep with the spec fix that makes the per-driver half of
+// `redactableConfigKeys` resolve a driver's identity through `resolveDriverId`
+// (#21955). This door reaches it with no source change: `getDatasource()` and
+// `restoreRedactedConfig` both go through `redactDatasourceConfig`. Spellings
+// are DERIVED from the alias table and the resolver's own folding, never
+// listed by hand.
+describe('every accepted spelling of a builtin driver, at the service door', () => {
+  const variantsOf = (spelling: string): string[] => [
+    spelling,
+    spelling.toUpperCase(),
+    `${spelling.charAt(0).toUpperCase()}${spelling.slice(1)}`,
+    ` ${spelling} `,
+  ];
+  /** The driver-specific keys beyond the contract derivation and the contract-less fallback. */
+  const stillWritableOf = (id: string): string[] => {
+    const fallback = new Set(redactableConfigKeys('a-driver-with-no-contract'));
+    const refused = new Set(refusedCredentialKeys(id));
+    return redactableConfigKeys(id).filter((key) => !fallback.has(key) && !refused.has(key));
+  };
+  const CASES = Object.entries(DRIVER_ID_ALIASES).flatMap(([spelling, id]) =>
+    variantsOf(spelling).flatMap((variant) => stillWritableOf(id).map((key) => ({ variant, key }))),
+  );
+  const spelledRow = (variant: string, key: string): StoredDatasource => ({
+    name: 'spelled_ds',
+    driver: variant,
+    origin: 'runtime',
+    config: { url: 'file:./fixture.db', [key]: 'fixture-secret' },
+  });
+
+  it('getDatasource() withholds the still-writable credential key under each accepted spelling, and names it', async () => {
+    // Population floor: the class is not empty today, so a derivation that
+    // silently found nothing fails here instead of passing over zero rows.
+    expect(CASES.length).toBeGreaterThan(0);
+    for (const { variant, key } of CASES) {
+      const { service } = makeService([spelledRow(variant, key)]);
+      const ds = await service.getDatasource('spelled_ds');
+      expect(ds!.config, JSON.stringify(variant)).toEqual({ url: 'file:./fixture.db' });
+      expect(ds!.redactedConfigKeys, JSON.stringify(variant)).toEqual([key]);
+    }
+  });
+
+  it('an untouched Save restores the stored value under each accepted spelling, so redaction never turns a save into deletion', async () => {
+    for (const { variant, key } of CASES) {
+      const { service, records } = makeService([spelledRow(variant, key)]);
+      // Exactly what the edit form does: GET, then PATCH the config it was given.
+      const read = await service.getDatasource('spelled_ds');
+      expect(read!.config, JSON.stringify(variant)).not.toHaveProperty(key);
+      await service.updateDatasource('spelled_ds', { config: read!.config, label: 'Renamed' });
+      expect(records[0].label).toBe('Renamed');
+      expect(records[0].config, JSON.stringify(variant)).toEqual({ url: 'file:./fixture.db', [key]: 'fixture-secret' });
+    }
+  });
+
+  it('a crafted driver id is read with its credentials withheld, and an untouched Save keeps them', async () => {
+    // Every name an object literal inherits: none is a builtin spelling, so
+    // each answers as a driver with no shipped contract, never with a throw.
+    const crafted = Object.getOwnPropertyNames(Object.prototype);
+    expect(crafted.length).toBeGreaterThan(0);
+    for (const name of crafted) {
+      const { service, records } = makeService([{
+        name: 'crafted_ds',
+        driver: name,
+        origin: 'runtime',
+        config: { host: 'fixture-host', password: 'fixture-secret' },
+      }]);
+      const ds = await service.getDatasource('crafted_ds');
+      expect(ds!.config, name).toEqual({ host: 'fixture-host' });
+      expect(ds!.redactedConfigKeys, name).toEqual(['password']);
+      await service.updateDatasource('crafted_ds', { config: ds!.config });
+      expect(records[0].config, name).toEqual({ host: 'fixture-host', password: 'fixture-secret' });
+    }
+  });
+});
diff --git a/packages/services/service-datasource/src/__tests__/datasource-credential-migration.test.ts b/packages/services/service-datasource/src/__tests__/datasource-credential-migration.test.ts
index be0e01524de..e673d5f2e94 100644
--- a/packages/services/service-datasource/src/__tests__/datasource-credential-migration.test.ts
+++ b/packages/services/service-datasource/src/__tests__/datasource-credential-migration.test.ts
@@ -16,7 +16,7 @@
  */
 
 import { describe, it, expect } from 'vitest';
-import { BUILTIN_DRIVER_IDS, refusedCredentialKeys } from '@objectstack/spec/data';
+import { BUILTIN_DRIVER_IDS, DRIVER_ID_ALIASES, redactableConfigKeys, refusedCredentialKeys } from '@objectstack/spec/data';
 import { planCredentialMigration, urlCredentialKeys } from '../datasource-credential-migration.js';
 import type { StoredDatasource } from '../datasource-admin-service.js';
 
@@ -289,3 +289,53 @@ describe('#9040 — the passthrough spelling at the planner door', () => {
     expect(plan).toEqual({ action: 'none', status: 'nothing-to-migrate', remaining: [] });
   });
 });
+
+// Lockstep with the spec fix that makes the per-driver half of
+// `redactableConfigKeys` resolve a driver's identity through `resolveDriverId`
+// (#21955): the planner's unbindable residue is derived from that same list,
+// so a row whose driver is written in any accepted spelling must be planned
+// exactly as the canonical spelling's row is. Spellings are DERIVED from the
+// alias table and the resolver's own folding, never listed by hand.
+describe('planCredentialMigration reads the same list under every accepted spelling of a builtin driver', () => {
+  const variantsOf = (spelling: string): string[] => [
+    spelling,
+    spelling.toUpperCase(),
+    `${spelling.charAt(0).toUpperCase()}${spelling.slice(1)}`,
+    ` ${spelling} `,
+  ];
+  /** The driver-specific keys beyond the contract derivation and the contract-less fallback. */
+  const stillWritableOf = (id: string): string[] => {
+    const fallback = new Set(redactableConfigKeys('a-driver-with-no-contract'));
+    const refused = new Set(refusedCredentialKeys(id));
+    return redactableConfigKeys(id).filter((key) => !fallback.has(key) && !refused.has(key));
+  };
+  const CASES = Object.entries(DRIVER_ID_ALIASES).flatMap(([spelling, id]) =>
+    variantsOf(spelling).flatMap((variant) => stillWritableOf(id).map((key) => ({ variant, id, key }))),
+  );
+
+  it('a bindable row names the still-writable credential key as its residue, byte-equal to the canonical spelling', () => {
+    // Population floor: the class is not empty today.
+    expect(CASES.length).toBeGreaterThan(0);
+    for (const { variant, id, key } of CASES) {
+      const [slot] = refusedCredentialKeys(id);
+      expect(slot, id).toBeDefined();
+      const config = { url: 'file:./fixture.db', [slot as string]: 'fixture-token', [key]: 'fixture-secret' };
+      const canonical = planCredentialMigration(row({ driver: id, config }));
+      expect(canonical).toEqual({ action: 'bind', key: slot, value: 'fixture-token', remaining: [key] });
+      expect(planCredentialMigration(row({ driver: variant, config })), JSON.stringify(variant)).toEqual(canonical);
+    }
+  });
+
+  it('a row holding only the still-writable credential key is refused with that key named, as under the canonical spelling', () => {
+    for (const { variant, id, key } of CASES) {
+      const config = { url: 'file:./fixture.db', [key]: 'fixture-secret' };
+      const canonical = planCredentialMigration(row({ driver: id, config }));
+      const spelled = planCredentialMigration(row({ driver: variant, config }));
+      expect(canonical.action).toBe('refuse');
+      expect(spelled.action, JSON.stringify(variant)).toBe('refuse');
+      if (spelled.action !== 'refuse') throw new Error('unreachable');
+      expect(spelled.reason, JSON.stringify(variant)).toContain(`config.${key}`);
+      expect(spelled.remedy.length).toBeGreaterThan(0);
+    }
+  });
+});
diff --git a/packages/spec/src/data/datasource-credential-redaction.test.ts b/packages/spec/src/data/datasource-credential-redaction.test.ts
index 8ee4e2a1371..0bebbc1d24c 100644
--- a/packages/spec/src/data/datasource-credential-redaction.test.ts
+++ b/packages/spec/src/data/datasource-credential-redaction.test.ts
@@ -32,10 +32,13 @@ import {
   BUILTIN_DRIVER_IDS,
   CREDENTIAL_KEY_SPELLINGS,
   CREDENTIAL_URL_QUERY_PARAM_NAMES,
+  DRIVER_ID_ALIASES,
   getDriverConfigSchema,
+  resolveDriverId,
   urlCredentialQueryParams,
   urlUserinfoPassword,
   urlUserinfoUsername,
+  validateDriverConfig,
 } from './driver/index';
 import {
   passthroughSecretPaths,
@@ -617,3 +620,91 @@ describe('refusedCredentialPaths — the schema derivation, walked at depth', ()
     }
   });
 });
+
+// The per-driver half of `redactableConfigKeys` resolves a driver's identity
+// through `resolveDriverId`, the resolver its sibling helper
+// `passthroughSecretPaths` and the write door's contract lookup already use
+// (#21955). Every spelling below is DERIVED from the alias table and the
+// resolver's own folding (trim + lower-case), never listed by hand, so a
+// spelling added to the vocabulary is pinned the day it lands.
+describe('driver identity: every accepted spelling of a builtin driver is redacted as that driver', () => {
+  /** The spellings the resolver folds onto one alias: as-is, upper, capitalised, padded. */
+  const variantsOf = (spelling: string): string[] => [
+    spelling,
+    spelling.toUpperCase(),
+    `${spelling.charAt(0).toUpperCase()}${spelling.slice(1)}`,
+    ` ${spelling} `,
+  ];
+  const ACCEPTED = Object.entries(DRIVER_ID_ALIASES).flatMap(([spelling, id]) =>
+    variantsOf(spelling).map((variant) => [variant, id] as const),
+  );
+  /** The driver-specific keys beyond the contract derivation and the contract-less fallback. */
+  const stillWritableOf = (id: string): string[] => {
+    const fallback = new Set(redactableConfigKeys('a-driver-with-no-contract'));
+    const refused = new Set(refusedCredentialKeys(id));
+    return redactableConfigKeys(id).filter((key) => !fallback.has(key) && !refused.has(key));
+  };
+
+  it('each accepted spelling is judged by the write door against its builtin driver contract', () => {
+    // The premise of the pins below: the write door does not treat these as
+    // unknown plugin drivers, so the read door must not either.
+    expect(ACCEPTED.length).toBe(Object.keys(DRIVER_ID_ALIASES).length * 4);
+    for (const [variant, id] of ACCEPTED) {
+      expect(resolveDriverId(variant), JSON.stringify(variant)).toBe(id);
+      expect(validateDriverConfig(variant, {}).known, JSON.stringify(variant)).toBe(true);
+    }
+  });
+
+  it('each accepted spelling answers its canonical driver\'s redactable set, byte-equal', () => {
+    for (const [variant, id] of ACCEPTED) {
+      expect(redactableConfigKeys(variant), JSON.stringify(variant)).toEqual(redactableConfigKeys(id));
+    }
+  });
+
+  it('the still-writable credential key is withheld under each accepted spelling and named as withheld', () => {
+    let judged = 0;
+    for (const [variant, id] of ACCEPTED) {
+      for (const key of stillWritableOf(id)) {
+        const stored = { url: 'file:./fixture.db', [key]: 'fixture-secret' };
+        const { config, redactedKeys } = redactDatasourceConfig(variant, stored);
+        expect(config, JSON.stringify(variant)).toEqual({ url: 'file:./fixture.db' });
+        expect(redactedKeys, JSON.stringify(variant)).toEqual([key]);
+        judged += 1;
+      }
+    }
+    // Population floor: the still-writable class is not empty today, so a
+    // derivation that silently found nothing would fail here instead of
+    // passing over zero spellings.
+    expect(judged).toBeGreaterThan(0);
+  });
+
+  it('control: a canonical spelling withholds the still-writable credential key exactly as before', () => {
+    let judged = 0;
+    for (const id of BUILTIN_DRIVER_IDS as readonly string[]) {
+      for (const key of stillWritableOf(id)) {
+        const { config, redactedKeys } = redactDatasourceConfig(id, { url: 'file:./fixture.db', [key]: 'fixture-secret' });
+        expect(config, id).toEqual({ url: 'file:./fixture.db' });
+        expect(redactedKeys, id).toEqual([key]);
+        judged += 1;
+      }
+    }
+    expect(judged).toBeGreaterThan(0);
+  });
+
+  it('a crafted driver id answers as a driver with no shipped contract: credentials withheld, never a throw', () => {
+    // Every name an object literal inherits. None is a builtin spelling, so
+    // each must resolve to no driver and take the contract-less fallback, not
+    // index an inherited member of the still-writable table.
+    const crafted = Object.getOwnPropertyNames(Object.prototype);
+    expect(crafted.length).toBeGreaterThan(0);
+    const fallback = redactableConfigKeys('a-driver-with-no-contract');
+    for (const name of crafted) {
+      expect(resolveDriverId(name), name).toBeUndefined();
+      expect(() => redactableConfigKeys(name), name).not.toThrow();
+      expect(redactableConfigKeys(name), name).toEqual(fallback);
+      const { config, redactedKeys } = redactDatasourceConfig(name, { host: 'fixture-host', password: 'fixture-secret' });
+      expect(config, name).toEqual({ host: 'fixture-host' });
+      expect(redactedKeys, name).toEqual(['password']);
+    }
+  });
+});
diff --git a/packages/spec/src/data/datasource-credential-redaction.ts b/packages/spec/src/data/datasource-credential-redaction.ts
index 43066bf2622..b543590328e 100644
--- a/packages/spec/src/data/datasource-credential-redaction.ts
+++ b/packages/spec/src/data/datasource-credential-redaction.ts
@@ -127,6 +127,11 @@ import { getDriverConfigSchema, resolveDriverId } from './driver/config-registry
  * left it writable because the datasource secret binder injects exactly one
  * secret slot and `external.credentialsRef` resolution cannot target a second
  * one; giving it a slot is #8081 scope item 4 and is NOT decided here.
+ *
+ * Keyed by CANONICAL driver id and looked up through {@link resolveDriverId},
+ * exactly like {@link PASSTHROUGH_SECRET_PATHS} below: every spelling the
+ * write door judges against a driver's contract is redacted as that driver,
+ * and an id that resolves to no builtin indexes nothing (#21955).
  */
 const STILL_WRITABLE_CREDENTIAL_KEYS: Record<string, readonly string[]> = {
   turso: ['encryptionKey'],
@@ -370,7 +375,8 @@ export function refusedCredentialKeys(driver: unknown): string[] {
 export function redactableConfigKeys(driver: unknown): string[] {
   const derived = refusedCredentialKeys(driver);
   const canonical = derived.length > 0 ? derived : [...CANONICAL_CREDENTIAL_KEYS];
-  const stillWritable = typeof driver === 'string' ? (STILL_WRITABLE_CREDENTIAL_KEYS[driver] ?? []) : [];
+  const id = resolveDriverId(driver);
+  const stillWritable = id ? (STILL_WRITABLE_CREDENTIAL_KEYS[id] ?? []) : [];
   return [...new Set([...canonical, ...FORMER_CREDENTIAL_ALIASES, ...stillWritable])];
 }