Create a typed pattern
Validates like preview before saving. A body naming pattern_id or expected_revision is refused; revise an existing pattern with PUT.
Authorizations
Existing Atlas integration connection with explicit api:connect plus appropriate native domain grants. atlas_ingest_ and browser cookies are not accepted.
Headers
Selector within saved grants and current issuer authority; never grants authority.
Stable native operation key. Reuse it as request_key through MCP; a changed body under the same key conflicts.
Body
Response
Native typed result.
Native typed outcome. Depending on the operation: records and effective revisions, issues with code, field path, severity and source references, applied constraints, soft preference effects, affected drafts and future published commitments with complete, missing or unsupported evidence, replayed for an exact retry and verified effect references. Authored availability, preference and pattern bodies round-trip unchanged.