# BACKBEAT — Requirements 2.0.0

Primary: DistSys, Protocol, Backend. Support: Security, SRE.

- BACKBEAT-INT-001: Publish INT-A/B/C schemas, golden samples, and importable tests in backbeat-contracts.
- BACKBEAT-REQ-002: Provide reference parsers/validators (JSONSchema + language stubs).
- BACKBEAT-OBS-003: Contract conformance runner usable in CI across modules.
- BACKBEAT-COMP-004: Mixed-client compatibility tests (UCXL v1.0/v1.1, warning behavior).