Tag: debugging

Three tools failed within a minute of each other with three unrelated errors, and the folder they blamed had ordinary permissions the whole time. macOS TCC had revoked it. Two tccutil resets fixed that with no restart, because Terminal and Claude Code hold separate TCC identities and each one needs its own grant.

When a Claude Code subagent fails, you cannot open it and look inside. It ran in its own isolated context and handed back a summary. Debugging a subagent is the skill of reading that summary, recognizing context-isolation failures, and designing subagents that report enough to be diagnosed. Here is how to do it.