NotebookLM MCP CLI

0.5.31 verified Mon Apr 27 auth: no python

Unified CLI and MCP server for Google NotebookLM. Version 0.5.31, actively developed with frequent releases.

pip install notebooklm-mcp-cli

Common errors

error AssertionError: Request already responded to ↓

cause HTTP transport in stateless mode (default) causes MCP SDK double-response crash on slow Google API calls.

fix

Add --no-stateless to your MCP server startup arguments.

error Auth loop: refresh_auth keeps returning false success ↓

cause NOTEBOOKLM_COOKIES env var set with expired cookies; tool keeps reloading stale cookies.

fix

Unset NOTEBOOKLM_COOKIES and run nlm login to generate fresh tokens.

breaking HTTP transport now defaults to stateless mode. Use `--no-stateless` to opt out. ↓

fix Add `--no-stateless` to your MCP server args if you encounter double-response crashes.

gotcha Stale NOTEBOOKLM_COOKIES env var causes auth loop. ↓

fix Clear the env var and re-run `nlm login`.

cli
wrong
```
from notebooklm_mcp_cli import cli
```
correct
```
# CLI is run via `nlm` command, not imported
```
The package provides a command-line entry point `nlm`, not a Python import.

Authenticate and list your NotebookLM notebooks.

nlm login
nlm notebooks list