# Versioned canonical output contracts

JULY 29, 2026

The existing /api/mcp endpoint now publishes a non-null contract and schema version, exact outputs for Contact, application-material, cover-letter, and résumé reads and exports, stable typed missing-record errors, per-tool capability and compatibility metadata, and a retained release artifact that blocks schema drift. Every successful tool response also includes a canonical CuriousCirkits permalink generated from one validated provider-level app origin, so administrators can change the application domain without changing individual tools or records.

## Release highlights

- Canonical responses now carry stable contracts and direct links back to the relevant CuriousCirkits record.

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