Zukko Blog
Guides to Claude Code, Cursor, Codex and the Claude and GPT APIs: setup, token savings and troubleshooting.
A model vanished from the model list — why, and what to do
3 min · · диагностика
The model list isn't a year-long catalogue — it's a snapshot of what works right now. Here's why it changes.
The agent says "I have no access to your files" — what broke
3 min · · harness
The model answers "I cannot access your project" even though the agent is configured. Almost always it's tool calls, not the model.