OpenBrain v1.0.1

OpenBrain v1.0.1

Patch release focused on write-path reliability and replay safety for production ingest flows, with no breaking API
changes.

Highlights

• Enforced write idempotency ledger on OSS write path (idempotency_key now replay-safe).
• Deterministic write receipts added (additive response metadata).
• HTTP and MCP parity for idempotency behavior.
• New DB-backed tests for replay, mismatch rejection, workspace scoping, bounded receipts, and persistence across
  reconnects.
• README/runtime truth-sync documentation cleanup.

What Changed

Reliability: Idempotent Writes + Receipts

• First write with (workspace, idempotency_key) writes normally and stores a receipt.
• Replay with same key + same payload returns prior receipt with replayed=true and does not duplicate objects/
  events.
• Same key + different payload is rejected deterministically with:
  • OB_INVALID_REQUEST
  • reason_code=OB_IDEMPOTENCY_KEY_REUSE_MISMATCH

Additive Write Response Fields

POST /v1/write / openbrain.write now include additive receipt metadata (non-breaking):

• replayed
• request_id (optional)
• accepted_count
• object_ids (bounded)
• receipt_hash (optional)

Compatibility

• v1.0.1 is backward-compatible with v1.0.0 clients.
• No endpoint renames, no schema-breaking contract changes.
• Response additions are optional/additive only.

Upgrade Notes

• Apply latest migrations before running production writes.
• Recommended for webhook/event ingest users needing replay safety.

Known Follow-up

• Future-incompat warning from sqlx-postgres remains tracked in follow-up IT13B / IT9C.2.