5 PrepMint guides tagged claude-code — written from using the tools and checked against the vendor's own documentation.
How it works · 11 min read
You asked for five things and got one, with a confident summary and no error. An agent loop ends when the model writes a message containing no tool call — a judgement nothing checks against your task. The five ways a run ends early, each fingerprint, and the phrasing that fixes it.
How it works · 11 min read
The session was fast for twenty turns, then you added one line to the top of a file and the next answer crawled. A prompt cache is keyed on an exact prefix, so cost and latency depend on where you changed something, not how much. The ordering rule that falls out of it.
Troubleshooting · 9 min read
The server is green, the tool count is right, and the model answers without touching any of it. That is a selection problem, not a connection problem: ten causes with distinct fingerprints, from a six-word description to the thirtieth tool that pushed the right one out of reach.
How it works · 9 min read
The docs specify how to define a subagent and never state what it inherits. A subagent starts on an empty context window, the delegation prompt is the only thing that crosses, and only its final message comes back — so it re-reads files you already read, and that is the feature working.
Troubleshooting · 9 min read
An MCP server that adds cleanly and then shows no tools has about ten possible causes, and each leaves a different fingerprint. A symptom-first triage guide: what the /mcp statuses actually mean, why scope cannot be changed in place, and the config error that makes Claude run your URL as a local process.