Verification — P0.9.2 ν Claude API Wrappers

1. Build gate

Command: npm run build Result: PASS — zero TypeScript errors, zero warnings. Note: npm install was required first (worktree had no node_modules; standard for new worktrees).

2. Test gate

Command: npm test (equiv: node --experimental-vm-modules node_modules/jest/bin/jest.js --coverage)

P0.9.2-specific suite

File: src/__tests__/domains/integrations/claude.test.ts Result: 41 / 41 PASS

Describe block	Tests	Result
createCompletion — success path	6	PASS
createCompletionWithTools — success path	4	PASS
API key validation	4	PASS
retry logic — 429 rate limiting	5	PASS
retry logic — 5xx server errors	3	PASS
terminal errors — no retry	3	PASS
logging	5	PASS
config — ANTHROPIC_API_KEY env schema	7	PASS
edge cases	4	PASS

Full suite

Total: 951 tests across 21 test suites

• Passed: 950
• Failed: 1 — startup — subprocess smoke › tsx src/server.ts boots and logs [Startup] Phase 1

The single failure is pre-existing (flagged independently by Wave F sub-agents for P0.8.2, P0.8.3, P0.9.3). It spawns tsx src/server.ts as a subprocess and is timing-sensitive. It is NOT caused by P0.9.2 changes — confirmed by:

1. The test file is src/__tests__/startup.test.ts, which has no dependency on claude.ts.
2. The failure mode is an empty stderr string (subprocess did not produce output in time).
3. The test was documented as flaky before this branch.

3. Acceptance criteria verification

Criterion	Status	Evidence
createCompletion(prompt, options) calls API with configured model	PASS	Tests: “sends POST to /v1/messages”, “request body contains model”
createCompletionWithTools(prompt, tools, options) tool-use completion	PASS	Tests: “includes tools array in request body”
API key from ANTHROPIC_API_KEY env var (validated at call-time; .optional() in Zod so the server boots without it — Design Invariant 5, reconciled R75 Wave H)	PASS	Tests: “throws AnthropicConfigError when apiKey absent”, config schema tests
Rate limit handling: 429 → exponential backoff, max 3 retries	PASS	Tests: “retries on 429 and succeeds on 3rd attempt”, “exhausts retries after 3 consecutive 429s”, “exponential backoff doubles delay”
All API calls logged: model, prompt_tokens, completion_tokens, latency_ms	PASS	Tests: “log line contains model, prompt_tokens, completion_tokens, latency_ms”
Test (mock): verify retry logic and logging	PASS	All 41 tests use injected fetchFn — no real network calls

4. Security invariants verified

• ANTHROPIC_API_KEY does NOT appear anywhere in test fixtures (only 'sk-ant-test-fake-key' dummy value).
• ANTHROPIC_API_KEY is NOT logged in any code path (confirmed: key is only passed as a header x-api-key).
• claude.ts writes to console.error only (never process.stdout); verified by “does not write to process.stdout” test.
• No .env file committed.

5. Migration decision confirmed

No 008_nu_anthropic.sql created. Logging to stderr is sufficient per the spec (“logged”) and P0.9.3 precedent. The decision documented in the contract was upheld.

6. Scope boundary confirmed

• src/server.ts was NOT modified — no MCP tool registration.
• src/domains/integrations/mcp-bridge.ts was NOT touched (P0.9.1 territory).
• 007_nu_broker.sql was NOT touched.

7. Files changed

File	Change
src/domains/integrations/claude.ts	CREATED — 240 lines
src/__tests__/domains/integrations/claude.test.ts	CREATED — 400+ lines, 41 tests
src/config.ts	MODIFIED — 3 new env vars added to Zod schema
src/domains/integrations/index.ts	MODIFIED — added export * from './claude.js'
docs/audits/p0-9-2-nu-claude-api-audit.md	CREATED
docs/contracts/p0-9-2-nu-claude-api-contract.md	CREATED
docs/packets/p0-9-2-nu-claude-api-packet.md	CREATED
docs/verification/p0-9-2-nu-claude-api-verification.md	CREATED (this file)

8. Residual risks

Risk	Severity	Notes
Pre-existing startup-subprocess smoke test flakiness	LOW	Pre-existing, not caused by this PR
COLIBRI_ANTHROPIC_TIMEOUT_MS not wired to fetch AbortController	LOW	Phase 0 spec says “library only” — timeout enforcement deferred
No circuit breaker (donor resilience.js pattern)	LOW	Explicitly out of scope per contract §8
loadConfig call in createCompletion/createCompletionWithTools may throw in minimal test envs	LOW	Caught with try/catch; falls back to hardcoded default