Problem Introduction
Model runs complete but callback updates never finalize your pipeline state.
Why It Happens
- •Callback URL misconfiguration
- •Schema changes between versions
- •Timeout and retry gaps
- •Missing run-level correlation IDs
Step-by-Step Fix
- 1Verify callback URL/auth contract.
- 2Capture callback payload and headers exactly.
- 3Correlate callback with run ID across pipeline stages.
- 4Make completion writes idempotent.
- 5Replay failed callbacks and validate final state.
Common Mistakes
- •Treating callback receipt as business completion
- •No dead-letter strategy
- •No stage-level observability
Debugging Workflow
Run timeline -> callback intake -> schema validation -> state transition audit -> replay.
Preventive Best Practices
- •Track callback lag and terminal-state mismatch
- •Set timeout budgets per stage
- •Use failure-category dashboards
Works with webhooks and other async event systems (including AI callbacks).
Instead of guessing, inspecting the exact payload and headers can help debug faster. Tools like Hookmetry support this workflow.
Try the free webhook testerRelated Documentation