> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase38-session08-voice-broker/implementation_summary.md). # Implementation Summary **Session ID**: `phase38-session08-voice-broker` **Completed**: 2026-06-30 **Duration**: 3 hours *** ## Overview Session 08 added the AI OS local OpenAI Realtime voice broker boundary. The work ships a loopback-only broker, guarded Vite launch bridge, package and launch targets, focused security tests, and current-state docs that prepare Session 09 to wire the Intelligence portal without claiming portal behavior early. *** ## Deliverables ### Files Created | File | Purpose | Lines | | ----------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------- | ----- | | `scripts/lib/voice-broker.ts` | Broker request helpers, health metadata, token checks, base URL policy, provider calls, and safe errors. | 505 | | `scripts/lib/voice-launch-bridge.ts` | Vite bridge helper for guarded `/__start_voice`, broker process lifecycle, health polling, and safe launch responses. | 416 | | `voice-lab/server.ts` | Loopback Bun server exposing `/api/health` and `/api/session` only. | 41 | | `voice-lab/.env.example` | Short-placeholder voice broker environment template. | 16 | | `scripts/lib/__tests__/voice-broker.test.ts` | Broker tests for health, token, origin, Host, base URL, provider, timeout, malformed response, and redaction paths. | 295 | | `scripts/lib/__tests__/voice-launch-bridge.test.ts` | Launch bridge tests for method, loopback, Host, token, env-only spawn, duplicate launch, spawn failure, and timeout paths. | 430 | | `.spec_system/specs/phase38-session08-voice-broker/spec.md` | Session scope, objectives, deliverables, success criteria, and quality gates. | 351 | | `.spec_system/specs/phase38-session08-voice-broker/tasks.md` | Completed 20-task implementation checklist. | 76 | | `.spec_system/specs/phase38-session08-voice-broker/implementation-notes.md` | Task evidence, upstream skip notes, runtime smoke, test, lint, typecheck, and hygiene logs. | 660 | | `.spec_system/specs/phase38-session08-voice-broker/code-review.md` | Creview findings and repair evidence. | 115 | | `.spec_system/specs/phase38-session08-voice-broker/security-compliance.md` | Security and GDPR review evidence. | 95 | | `.spec_system/specs/phase38-session08-voice-broker/validation.md` | Validation report and quality-gate evidence. | 231 | | `.spec_system/specs/phase38-session08-voice-broker/IMPLEMENTATION_SUMMARY.md` | Final updateprd implementation summary. | 116 | ### Files Modified | File | Changes | | --------------------------------------------------------- | -------------------------------------------------------------------------------------------------------- | | `.claude/launch.json` | Added the runnable `voice-lab` launch target for port 8099. | | `.gitignore` | Allowed committed `.env.example` files while keeping real `.env*` files ignored. | | `.spec_system/state.json` | Marked Session 08 planned, validated, and complete; cleared the active session. | | `.spec_system/PRD/phase_38/PRD_phase_38.md` | Marked Session 08 complete and advanced Phase 38 progress to 8/10 sessions. | | `README.md` | Bumped the displayed project version to 0.5.81. | | `docs/CHANGELOG.md` | Added the Session 08 release entry and version bump note. | | `docs/local-voice-setup.md` | Updated voice setup from future-only policy to shipped broker setup and Session 09 boundary. | | `docs/intelligence-view.md` | Documented broker transport as shipped while leaving the portal and spoken Hermes loop Session 09-owned. | | `package.json` | Added the `voice` script and bumped version to 0.5.81. | | `scripts/lib/__tests__/local-control-plane-guard.test.ts` | Added `/__start_voice` to representative privileged endpoint Host guard coverage. | | `tsconfig.scripts.json` | Included `voice-lab/**/*.ts` in script typechecking. | | `vite.config.ts` | Registered the guarded voice launch bridge using existing local control-plane patterns. | *** ## Technical Decisions 1. **Broker-only Session 08 scope**: Shipped the token broker and launch target without copying the upstream standalone demo or `/api/sample` route, because Session 09 owns the real AI OS product surface. 2. **Environment-only provider credentials**: Kept provider keys in server environment and never accepted them from browser request bodies, argv, committed fixtures, or docs. 3. **Restrictive base URL policy**: Defaulted to `https://api.openai.com` and allowed only OpenAI or loopback-compatible `OPENAI_BASE_URL` values to avoid redirecting provider keys to arbitrary remote hosts. 4. **Shared control-plane patterns**: Registered `/__start_voice` through the same loopback, Host-header, token, and safe JSON response style used by existing local Vite middleware. *** ## Test Results | Metric | Value | | -------- | ---------------------------------------- | | Tests | 4570 full-suite tests; 19 targeted tests | | Passed | 4570 full-suite tests; 19 targeted tests | | Coverage | Not collected by validation command | Additional passing gates: `bun run typecheck`, `bun run typecheck:scripts`, `bun run lint`, `bun run format:check`, `git diff --check`, ASCII/LF sweeps, filtered literal-secret sweep, and runtime broker smoke. *** ## Lessons Learned 1. Launch bridge state must keep the in-flight marker through health polling, not only process spawn, to prevent duplicate broker starts. 2. Session docs need explicit Session 09 boundaries because shipping transport alone can otherwise read like shipping the full voice product. 3. Strict script typechecking is useful for test error assertions around unknown provider-failure shapes. *** ## Future Considerations Items for future sessions: 1. Session 09 should wire the Intelligence portal and spoken Hermes loop to this broker readiness contract. 2. Real Realtime credential minting should be repeated when provider credentials are available in the target operator environment. 3. Session 10 should include the skipped upstream standalone voice demo and `/api/sample` route in the final hunk reconciliation ledger. *** ## Session Statistics * **Tasks**: 20 completed * **Files Created**: 13 * **Files Modified**: 12 * **Tests Added**: 19 targeted tests * **Blockers**: 0 resolved --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase38-session08-voice-broker/implementation_summary.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.