{"api_version":"2026-04-25.headless-v1","mcp_protocol_version":"2026-01-15","released_at":"2026-04-25","next_review":"2026-07-25","deprecations":[],"changes":[{"type":"added","summary":"Headless v1 surface: OpenAPI 3.1 spec, Swagger UI, MCP server with read-only Finance/Sales/Knowledge tools."},{"type":"added","summary":"Story #784: API versioning doctrine, /api/changelog.json feed, X-Forthai-Sunset middleware, no-write-scope contract test."}]}