Common MCP failures.
| Symptom | Check |
|---|---|
| Red status | Command missing, crash on start, bad URL |
| Tools empty | Toggle off/on, Reload, read main-process logs |
| Model ignores MCP | New chat; confirm green; ask explicitly to use MCP tool names |
run_subagent on URLs | Blocked — use MCP browser tools instead |
| Native tools 400 (Ollama) | Elcro retries XML path; try a stronger tool-capable model |