MCP Hello World

# Delivery (Roadmap, Release, Comms) ## 1. Roadmap (Now / Next / Later) - **Now (v0.1.0):** - `/mcp` returns `Hello, World` - `/healthz` JSON OK - `/metrics` Prometheus text (latency histogram + handshake counters) - CI (typecheck, lint, tests ≥90/100), SBOM (Syft), sign (Cosign), Trivy scan - Deploy to Cloud Run (min-instances=0) - README with MCP Inspector steps - **Next:** _not planned_ - **Later:** _not planned_ - **Risks/assumptions:** cold start vs p95; Cloud Run region; Inspector proxy/token setup ## 2. Release Plan - Environments: Single environment (Prod on Cloud Run) - Stages: Single v0.1.0 release - Rollout: direct deploy; rollback = redeploy last passing image ### Release Readiness Checklist - [ ] `/mcp` returns `Hello, World` in Inspector - [ ] `/healthz` returns 200 - [ ] `/metrics` exposes Prometheus text; latency & counters present - [ ] CI green: typecheck, lint, tests ≥90% / 100% critical - [ ] SBOM generated; image signed; Trivy scan has no Critical/High - [ ] Cloud Run URL confirmed; README updated - [ ] **Draft PR opened to MCP protocol repo with project summary & repo link** ## 3. Changelog (SemVer) ### 2025-08-28 v0.1.0 — Initial release - Inspector-only Streamable HTTP `/mcp` - `/healthz` and `/metrics` (Prometheus) - CI/CD with SBOM + signed image ## 4. Communications - Stakeholder updates: none (one-and-done) - External comms: README + GitHub release notes only (include the MCP draft PR link)