Support HMAC signature verification as alternative to bearer token auth for hooks
증상
External webhooks (GitHub, Mercury, Stripe, etc.) sign payloads with HMAC-SHA256 but cannot add bearer tokens to their requests. The current hooks system requires bearer token authentication, which means external webhook providers cannot directly invoke OpenClaw hooks.
원인
OpenClaw gateway, skill, or agent configuration issue — root cause confirmed in the openclaw/openclaw issue tracker.
해결법
Running a separate webhook gateway (TypeScript/Node.js) on the same machine that:
- Receives external webhooks on a different port
- Verifies HMAC signatures
- Performs the transform logic directly (since it can’t forward to OpenClaw hooks without bearer auth)
This works but duplicates routing/transform infrastructure that hooks already provide.
예상 토큰 절약
이 에러로 삽질 시: 약 5,000~15,000 토큰 소비 이 해결법 참조 시: 약 500 토큰
출처
https://github.com/openclaw/openclaw/issues/32250
Source: https://github.com/openclaw/openclaw/issues/32250
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