API Changelog

This changelog documents API-level changes over time.

2026-01-06

RC-97: Webhooks receiver samples (Express + FastAPI) using RC-96 signature verification + envelope parsing stubs (no new Platform API endpoints).
RC-98: Webhooks SDK packaging + versioning discipline (Node + Python), fixture-driven and deterministic (no new Platform API endpoints).
RC-99: Webhooks merchant harness (offline) + integration evidence receipts, fixture-driven and deterministic (no new Platform API endpoints).
RC-101: Environment boundary plan (local/staging/production) pinned as a versioned config contract (no new Platform API endpoints).
RC-100: Public webhook integration docs (developer journey v1), pinned to sealed contracts/fixtures (no new Platform API endpoints).
RC-102: Admin auth + access boundaries for operator-only endpoints (scopes + audit event contract), deterministic and fixture-driven (no new Platform API endpoints).
RC-103: Long-term storage data model schemas for webhooks records (attempts, delivery/subscription state, DLQ, rollups), additive and deterministic (no new Platform API endpoints).
RC-104: Webhooks storage adapter selection contract + prod-shape adapter stub (filesystem-backed), deterministic and fail-closed (no new Platform API endpoints).
RC-105: Webhooks staging-like end-to-end evidence harness (offline), deterministic and fixtures-first (no new Platform API endpoints).
RC-106: Platform core freeze + immutability guarantees (governance-only enforcement; no new Platform API endpoints).

RC-78: Webhook signature verification semantics + GET /v1/webhooks/endpoints/{endpoint_id}/verification.