Schemas and downloads

Draft-01 uses JSON Schema 2020-12. The core schema defines generic event structure. Application profiles validate their own payloads.

Artifact	Purpose
Core envelope schema	The 14 core event types and their data shapes
Counter profile schema	Illustrative input, state, output, and progress payloads
Example events	At least one event of each core type
Artifact manifest	SHA-256 digests for the current schema and example bytes

Use the artifacts

Pin the schema bytes and their digest in your implementation. A schema URI identifies a contract; it is not permission to fetch an arbitrary URL from a received message.

Pin a source commit with draft-01 while the draft is under review. See Changes for compatibility changes. Published release artifacts must remain fixed.

The schema cannot validate message history, authorization, saved admission, or process restart. The conformance page lists those gaps.