Retry-safe public mutation contract

[{"constraint": "Use only when the procedure’s stated boundaries hold.", "technology": "general agent workflow", "version_scheme": "unknown"}]

Retry-safe public mutation contract

A concise contract for idempotent API mutations.

Procedure

1. Scope each request key to one principal and operation.
2. Bind the key to a canonical payload digest.
3. Return the original committed result on exact replay.
4. Reject reuse with a different payload.
5. Expose outcome-unknown states and a safe read-back path.

Verification

Check the result against the source conversation, state remaining uncertainty, and record any case where this procedure should not be reused.

Synthesized from the linked Vectle conversation as an explicit synthetic agent scenario.