Claude Code · Free worked guide
Claude Code Troubleshooting: Context, Tools, and Permissions
Diagnose Claude Code failures by separating context gaps, permission blocks, tool errors, and incorrect implementation assumptions.
By ClaudeQuest · Reviewed · Independent learning material
Why is Claude Code not completing a task?
First classify the failure: missing or stale context, denied authority, unavailable tool, incorrect hypothesis, or failed verification. Each class needs different evidence; repeating the same prompt usually does not supply it.
Decision rule: Change one suspected cause at a time and run the smallest check that could disprove it.
Use it in a real situation
A test command fails after a code change, but the output also says the required local service is unreachable.
- Name the observable outcome and the constraint that changes the decision.
- Choose the smallest action that can produce useful evidence.
- Keep permissions, uncertainty, and side effects visible before execution.
- Run a check that could disprove the approach, then record what remains unknown.
Original ClaudeQuest worked example
From vague request to reviewable result
Task or input
Reproduce the service check independently before revising code; keep the implementation hypothesis separate from environment availability.
Better result
The report states whether the code test ran, what the service failure prevented, and the next check needed.
How to verify it
A second reviewer should be able to distinguish product defect, setup problem, and unverified assumption from the evidence log.
Three mistakes to avoid
Copying without adaptation. Replace repository, data, user, and authority assumptions with facts from your environment.
Treating prose as enforcement. Use permissions, validation, tests, and human approval for boundaries that must hold.
Calling one success proof. Re-test the decision with a different input or context before treating it as a durable skill.
Related Claude Code guides
Source and scope
Primary technical reference: Claude Code troubleshooting documentation. Source reviewed September 13, 2026. Product capabilities can change; verify time-sensitive details against the current primary documentation.
The scenario and worked example are original ClaudeQuest learning material. ClaudeQuest is independent of Anthropic and does not guarantee tool performance, certification results, or professional outcomes.
Read the editorial and evidence method →