Structured self-debugging workflow for AI agent failures using capture, diagnosis, contained recovery, and introspection reports. Use when an agent run fails and you need a reproducible diagnosis instead of a retry.

Agent Introspection Debugging Use this skill when an agent run is failing repeatedly, consuming tokens without progress, looping on the same tools, or drifting away from the intended task. This is a workflow skill, not a hidden runtime. It teaches the agent to debug itself systematically before escalating to a human. When to Activate Maximum tool call / loop limit failures Repeated retries with no forward progress Context growth or prompt drift that starts degrading output quality File system or environment state mismatch between expectation and reality Tool failures that are likely recoverable with diagnosis and a smaller corrective action Scope Boundaries Activate this skill for: capturing failure state before retrying blindly diagnosing common agent specific failure patterns applying contained recovery actions producing a structured human readable debug report Do not use this skill as the primary source for: feature verification after code changes; use verification loop framework specific debugging when a narrower ECC skill already exists runtime promises the current harness cannot enforce automatically Four Phase Loop Phase 1: Failure Capture Before trying to recover, record the failure precisely. Capture: error type, message, and stack trace when available last meaningful tool call sequence what the agent was trying to do current context pressure: repeated prompts, oversized pasted logs, duplicated plans, or runaway notes current environment assumptions: cwd, branch, relevant service state, expected files Minimum capture template: Phase 2: Root Cause Diagnosis Match the failure to a known pattern before changing anything. Pattern Likely Cause Check Maximum tool calls / repeated same command loop or no exit observer path inspect the last N tool calls for repetition Context overflow / degraded reasoning unbounded notes, repeated plans, oversized logs inspect recent context for duplication and low signal bulk ECONNREFUSED / timeout service unavailable or wrong port verify service health, URL, and port assumptions 429 / quota exhaustion retry storm or missing backoff count repeated calls and inspect retry spacing file missing after write / stale diff race, wrong cwd, or branch drift re check path, cwd, git status, and actual file existence tests still failing after “fix” wrong hypothesis isolate the exact failing test and re derive the bug Diagnosis questions: is this a logic failure, state failure, environment failure, or policy failure? did the agent lose the real objective and start optimizing the wrong subtask? is the failure deterministic or transient? what is the smallest reversible action that would validate the diagnosis? Phase 3: Contained Recovery Recover with the smallest action that changes the diagnosis surface. Safe recovery actions: stop repeated retries and restate the hypothesis trim low signal context and keep only the active goal, blockers, and evidence re check the actual filesystem / branch / process state narrow the task to one failing command, one file, or one test switch from speculative reasoning to direct observation escalate to a human when the failure is high risk or externally blocked Do not claim unsupported auto healing actions like “reset agent state” or “update harness config” unless you are actually doing them through real tools in the current environment. Contained recovery checklist: Phase 4: Introspection Report End with a report that makes the recovery legible to the next agent or human. Recovery Heuristics Prefer these interventions in order: 1. Restate the real objective in one sentence. 2. Verify the world state instead of trusting memory. 3. Shrink the failing scope. 4. Run one discriminating check. 5. Only then retry. Bad pattern: retrying the same action three times with slightly different wording Good pattern: capture failure classify the pattern run one direct check change the plan only if the check supports it Integration with ECC Use verification loop after recovery if code was changed. Use continuous learning v2 when the failure pattern is worth turning into an instinct or later skill. Use council when the issue is not technical failure but decision ambiguity. Use workspace surface audit if the failure came from conflicting local state or repo drift. Output Standard When this skill is active, do not end with “I fixed it” alone. Always provide: the failure pattern the root cause hypothesis the recovery action the evidence that the situation is now better or still blocked

agent-introspection-debugging