feat(claude-code): expose settingSources (default project) and loaded skills

[mikemikimike]

claudeCodeText gets a settingSources option, and the claude-code.session-id event now reports the skills Claude Code loaded. The default is ['project']. With it, workspace projections (instructions, skills, MCP config) reach Claude Code, and a local-process run does not load the host's ~/.claude.

🎯 Changes

• Add settingSources?: Array<'user' | 'project' | 'local'> to ClaudeCodeTextConfig. The adapter passes it to --setting-sources.
• Default to ['project']. Claude Code reads CLAUDE.md, .claude/skills, and .mcp.json only when project is in the sources. The old hard-coded user skipped every workspace projection and pulled the host's ~/.claude into local-process runs.
• Forward the init message's skills list on the claude-code.session-id event. The list is empty when the CLI omits it.
• Install projected plugins with claude plugin install --scope project, so they load under the default.
• Docs: docs/adapters/claude-code.md (option table, settings paragraph, skills on the event). Changeset: minor.

✅ Checklist

• I have followed the steps in the Contributing guide.
• I have tested this code locally with pnpm run test:pr.
• Docs: I updated docs/ for this change, or this change is not user-facing.
• Changeset: I added a changeset (pnpm changeset), or this PR does not change a published package.

🚀 Release Impact

• This change affects published code, and I have generated a changeset.
• This change is docs/CI/dev-only (no release).

Testing

Commands run.

• pnpm exec nx run-many --targets=build,test:lib,test:types,test:oxlint,test:build --projects=@tanstack/ai-claude-code: 63 tests pass, types, lint, and publint clean.
• pnpm test:docs and pnpm test:kiira: no broken links, 1144 snippets pass.
• pnpm exec oxfmt --check on the changed files: clean.
• pnpm test:pr: passed (79 projects, exit 0).

Live checks against claude 2.1.241 with a .claude/settings.json, a .claude/skills/repo-skill, and a CLAUDE.md in the cwd:

--setting-sources	repo skill loaded	CLAUDE.md loaded	host ~/.claude skills
user	no	no	142
project	yes	yes	0

Manual test. Needs claude login on the host.

1. Build: pnpm exec nx run-many --targets=build --projects=@tanstack/ai-claude-code,@tanstack/ai-sandbox-local-process
2. Save the script below as packages/ai-claude-code/manual.mjs.
3. From packages/ai-claude-code, run node manual.mjs. Expect MARKER42: true and a small skills count (built-ins only).
4. Run node manual.mjs user. Expect MARKER42: false and your host's skills count.

manual.mjs

import { chat } from '@tanstack/ai'
import { claudeCodeText, SESSION_ID_EVENT } from '@tanstack/ai-claude-code'
import { defineSandbox, defineWorkspace, withSandbox } from '@tanstack/ai-sandbox'
import { localProcessSandbox } from '@tanstack/ai-sandbox-local-process'

const settingSources = process.argv[2]?.split(',')

const sandbox = defineSandbox({
  id: `manual-${process.argv[2] ?? 'default'}`,
  provider: localProcessSandbox({}),
  workspace: defineWorkspace({
    source: { type: 'none' },
    instructions: 'Always include the exact token MARKER42 in every reply.',
  }),
})

const stream = chat({
  adapter: claudeCodeText('haiku', {
    authMode: 'host',
    maxTurns: 1,
    ...(settingSources ? { settingSources } : {}),
  }),
  messages: [{ role: 'user', content: 'say ok' }],
  middleware: [withSandbox(sandbox)],
})

let text = ''
for await (const chunk of stream) {
  if (chunk.type === 'TEXT_MESSAGE_CONTENT') text += chunk.delta
  if (chunk.type === 'CUSTOM' && chunk.name === SESSION_ID_EVENT) {
    console.log('skills loaded:', chunk.value.skills.length)
  }
}
console.log('MARKER42:', text.includes('MARKER42'))

How this PR makes testing easy. tests/text-adapter.test.ts covers the default source and an explicit list. tests/translate.test.ts covers skills present and absent. The script above runs the full chat() + withSandbox path.

Linked issues

Closes #1113

Risk / rollback

This is a behavior change for every claudeCodeText user. Project settings now apply, and user settings do not. A cloned repo's .claude/settings.json and hooks now run inside the sandbox. To keep the old behavior, pass settingSources: ['user']. To undo, revert this PR.

Public API change

Before

const adapter = claudeCodeText('claude-opus-4-8')
// Always `--setting-sources user`. No way to change it.

After

const adapter = claudeCodeText('claude-opus-4-8', {
  settingSources: ['user', 'project', 'local'], // optional, default ['project']
})

// The session event now carries the loaded skills.
useChat({
  onCustomEvent: (name, value) => {
    if (name === 'claude-code.session-id') console.log(value.skills)
  },
})

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📒 Files selected for processing (6)

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• packages/ai-claude-code/src/stream/sdk-types.ts
• packages/ai-claude-code/src/stream/translate.ts
• packages/ai-claude-code/tests/text-adapter.test.ts
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🚧 Files skipped from review as they are similar to previous changes (6)

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---

📝 Walkthrough

Walkthrough

The Claude Code adapter configures CLI setting sources and forwards loaded skills from SDK init messages through session metadata events. Tests cover custom sources, default sources, populated skills, and empty-skill defaults. A changeset documents the update.

Changes

Claude Code adapter updates

Layer / File(s)	Summary
Setting source configuration packages/ai-claude-code/src/adapters/text.ts, packages/ai-claude-code/tests/text-adapter.test.ts	Adds supported setting-source types and configuration. CLI arguments use configured sources and default to user. Tests cover project,local and the default.
Skill metadata forwarding packages/ai-claude-code/src/stream/sdk-types.ts, packages/ai-claude-code/src/stream/translate.ts, packages/ai-claude-code/tests/translate.test.ts, .changeset/pink-skills-dance.md	Adds optional SDK skill data and includes it in session metadata. Missing skills become an empty array. Tests cover both cases, and the changeset documents the update.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to 21c8f

This change adds settings-source configuration and exposes loaded skills without a supplied merge-blocking correctness or production risk; it is merge-ready after normal checks and review.

Sequence Diagram(s)

sequenceDiagram
  participant ClaudeSDK
  participant translateSdkStream
  participant SessionMetadata
  ClaudeSDK->>translateSdkStream: Send init message with skills
  translateSdkStream->>SessionMetadata: Emit CUSTOM session event with skills

Loading

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	The implementation meets issue #1113 by forwarding setting sources and exposing normalized loaded skills in session metadata.
Out of Scope Changes check	✅ Passed	All code, tests, and changeset updates directly support the linked issue objectives.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 5…
Title check	✅ Passed	The title identifies both implemented areas: the new settingSources option and loaded skills metadata. However, it states that the default is project, while the change summary and PR objectives state …
Description check	✅ Passed	The description is complete and follows the repository template. It documents the changes, testing, release impact, changeset, linked issue, rollback plan, and public API impact. However, its claim th…

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 5 files. (1 skipped: 1 unsupported.)

Full details: Title check

Explanation

The title identifies both implemented areas: the new settingSources option and loaded skills metadata. However, it states that the default is project, while the change summary and PR objectives state that the default remains user.

Full details: Description check

Explanation

The description is complete and follows the repository template. It documents the changes, testing, release impact, changeset, linked issue, rollback plan, and public API impact. However, its claim that the default is project conflicts with the change summary and PR objectives, which state that the default remains user.

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Actionable comments posted: 1

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Inline comments:
In `@packages/ai-claude-code/tests/text-adapter.test.ts`:
- Line 184: Add a regression test alongside the explicit settingSources cases in
the text-adapter tests that omits settingSources and verifies the generated
arguments include the default user source, while retaining the existing
['project', 'local'] coverage.

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Inline comments:
In `@packages/ai-claude-code/tests/text-adapter.test.ts`:
- Around line 254-256: Update the assertion around the argv.txt read to require
an argument boundary after the default user source, so it matches
--setting-sources user but not user,project or user,local. Preserve the existing
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[github-actions]

Thanks for the PR, @mikemikimike! 🙌 @tombeckenham will take a look.

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☁️ Nx Cloud last updated this comment at 2026-08-25 08:01:18 UTC

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[tombeckenham]

Hey @mikemikimike — thanks for this, the implementation looks great and defaulting to ['user'] to preserve existing behavior is the right call. Tests, types, and lint are all green on my end. A few small follow-ups before merge:

1. Docs reconciliation — docs/adapters/claude-code.md has documented settingSources since feat(ai): sandboxed harness adapters (provider-agnostic sandbox layer)  #774 (aspirationally — the option didn't exist yet) and claims a default of ['project'], which now contradicts the implemented ['user'] default. Could you:
   • fix the table row (line ~77) to say default ['user'] with matching prose,
   • reword line ~185 ("The adapter loads only user settings") since that's now a configurable default,
   • document the new skills field on the claude-code.session-id event payload (the example around lines 131–140 only shows sessionId),
   • bump the page's updatedAt in docs/config.json.
2. Export the type — ClaudeCodeSettingSource is exported from adapters/text.ts but not re-exported from src/index.ts (its sibling ClaudeCodePermissionMode is), and there's no ./adapters subpath, so consumers can't name it.
3. Stale comment — the comment at text.ts:217 still says `--setting-sources user` before `-p`; the literal user is now config-driven. Keep the ordering rationale, just drop user.
4. (Optional) a unit test for settingSources: [] → the CLI receives --setting-sources ''. I verified against claude 2.1.241 that empty is accepted as "no sources" (invalid values error clearly), so it works — a test would just pin the documented "[] for full isolation" behavior against refactors.

None of this touches the core diff — happy to merge once the docs line up.

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commit: 5f183cf

[tombeckenham]

@mikemikimike heads-up: I pushed 5f183cf onto this branch (maintainer edit) that flips the default to settingSources: ['project']. Sorry for the earlier steer toward ['user']; I was wrong.

Why: Claude Code only reads project-scoped config (CLAUDE.md, .claude/skills, .mcp.json) when project is in --setting-sources. The sandbox layer projects workspace.instructions, gitSkill, and mcpSkill at exactly that scope, so under user none of it ever reached Claude Code. Live-tested against claude 2.1.241: with user, the repo's CLAUDE.md and skills are ignored and 142 host skills load; with project, both apply and no host skills load. ['project'] is also your production case from #1113 out of the box.

The commit also switches plugin projection to claude plugin install --scope project, updates the docs and changeset, and flips the default test. Your option and the skills field are untouched.