nexus/.planning/phases/31-puter.js-zero-config-cloud/31-01-SUMMARY.md

phase	plan	subsystem	tags	dependency_graph	tech_stack	key_files	decisions	metrics	requirements
31-puter.js-zero-config-cloud	01	server	puter proxy sse streaming cost-tracking secrets	requires provides affects puterProxyService puterProxyRoutes server/src/app.ts	added patterns SSE streaming AsyncGenerator secretService token storage conditional cost recording	created modified server/src/services/puter-proxy.ts server/src/routes/puter-proxy.ts server/src/__tests__/31-puter-proxy.test.ts server/src/app.ts	agentId is optional in chatStream — cost recording skipped when null/undefined to avoid FK violation in cost_events PUTER_DEFAULT_MODEL set to claude-3-5-haiku-20241022 matching Puter's OpenAI-compat endpoint Non-blocking cost recording via .catch(() => {}) pattern — stream completes regardless of cost event persistence	duration completed tasks_completed files_changed 4m 2026-04-03 2 4	CLOUD-01 CLOUD-02

Phase 31 Plan 01: Puter Proxy Service + Routes Summary

JWT auth with Puter token stored via secretService and relayed as Bearer header to Puter's OpenAI-compatible SSE endpoint with conditional cost tracking.

What Was Built

server/src/services/puter-proxy.ts — puterProxyService(db) factory with:

• storeToken(companyId, token): create-or-rotate idempotent token storage via secretService with name puter_auth_token, provider local_encrypted
• resolveToken(companyId): retrieves and resolves latest secret version; throws unprocessable if not configured
• chatStream(companyId, agentId, messages, model, signal): AsyncGenerator that POSTs to https://api.puter.com/puterai/openai/v1/chat/completions with stream: true and stream_options: { include_usage: true }, parses SSE lines, yields content tokens, records cost event (only when agentId is truthy)

server/src/routes/puter-proxy.ts — puterProxyRoutes(db) Express Router with:

• POST /puter-proxy/token — board auth, stores token, returns { ok: true }
• POST /puter-proxy/chat — board auth, SSE headers, streams tokens as data: { token: "..." }, sends data: { done: true } on completion

server/src/app.ts — import and mount api.use(puterProxyRoutes(db)) after costRoutes, inside boardMutationGuard.

server/src/__tests__/31-puter-proxy.test.ts — 10 vitest tests covering all behaviors (token create/rotate, token resolve, Puter fetch headers, SSE yielding, cost recording with agentId, cost skip without agentId, route 200/SSE/optional-agentId).

Verification

• All 10 tests passing: npx vitest run src/__tests__/31-puter-proxy.test.ts
• All 14 acceptance criteria pass (grep checks)
• New files produce zero TypeScript errors (pre-existing plugin-sdk errors unrelated to this plan)

Deviations from Plan

Auto-fixed Issues

1. [Rule 1 - Bug] Test 4 mock missing return value for createEvent

• Found during: GREEN phase test run — Test 4 passed agentId="agent-1" triggering cost recording but mockCreateEvent had no configured return (returns undefined after vi.clearAllMocks)
• Fix: Added mockCreateEvent.mockResolvedValue({ id: "ev-1" }) to Test 4 setup
• Files modified: server/src/tests/31-puter-proxy.test.ts
• Commit: 13bc39b1

Known Stubs

None — all data paths are wired. The Puter token is resolved from secretService on every call (no stub).

Self-Check: PASSED