yams/docs/spec

YAMS Interfaces & Versions

This directory contains interface specifications and schemas for YAMS plugins and public surfaces.

• wit/ – WIT definitions for WASM components (e.g., object_storage_v1.wit, dr_provider_v1.wit).
• schemas/ – JSON Schemas describing manifests and interface payloads.
• interface_versions.json – authoritative version registry for public interfaces:
  • Keys: plugin_abi, object_storage_v1, dr_provider_v1, model_provider_v1, etc.
  • Bump the corresponding version when changing WIT/schemas/headers for that interface.

Policy

• Any change to public surfaces requires either:
  • A version bump in docs/spec/interface_versions.json for the affected interfaces, or
  • A CHANGELOG/stability PBI update explicitly acknowledging the change.
• CI enforces this via scripts/ci/check_yams_semver.py during build.

Notes

• Keep WIT and schema filenames aligned with the version keys (e.g., object_storage_v1.wit, object_storage_v1.schema.json) so automated mapping is accurate.
• For new interfaces, add an entry to interface_versions.json when introducing the first version.