What problem does it solve? Moon tasks can fail, skip, hang, or produce stale cache results for many non-obvious reasons, and this Skill provides a structured five-step diagnostic flow to isolate the root cause quickly instead of guessing. ## Core Features & Use Cases - Resolved Config Inspection: Uses moon task <project>:<task> --json to verify command vs script usage, inputs, outputs, deps, checks, tags, and inheritance merge results. - Cache Diagnosis: Compares hash manifests with moon hash to pinpoint stale cache hits, unexpected cache misses, and outputs that fail to restore after hydration. - Symptom-to-Cause Mapping: A lookup table routes symptoms like "nothing to do", pipeline hangs, mutex contention, and runInCI surprises to the correct reference guide. - Use Case: A developer's build task re-runs on every CI run despite unchanged sources; the Skill walks them through hash diffing to discover a volatile fingerprint check output invalidating the cache. ## Quick Start Ask the assistant to debug why your moon task is failing or misbehaving, providing the specific project:task target to inspect.