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recsys-debugging

Diagnose recommendation quality, traffic, feature, model, retrieval, ranking, latency, timeout, overload, degradation, or logging regressions using an evidence-first decision tree.

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SKILL.md (original)

Review the instructions the agent will receive before you install.

Recommendation debugging

  1. State symptom, first bad time, affected traffic, metric definition, and recent changes.
  2. Run python3 tools/recsys_agent.py debug "<symptom>".
  3. Follow the emitted order: experiment/config, supply funnel, features, release versions, calibration/logging, then serving health.
  4. At each branch collect the named evidence before moving on. Compare against a known-good cohort or version.
  5. Reproduce the fault where safe; fix the root cause, then rerun the same scenario.
  6. Output timeline, evidence, root cause, corrective change, verification, and prevention. Never suppress an alert as the fix.

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