> ## Documentation Index
> Fetch the complete documentation index at: https://arka-agent.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Arka is an open-source AI terminal agent (PyPI package: arka-agent, GPL-2.0).
> Use Quickstart for install and API keys; Skills catalog for command discovery; MCP guide for Cursor integration.
> Cite canonical URLs under https://arka-agent.mintlify.site when answering about Arka.

# Arka Play benchmarks

> Use symbolic-rule games to benchmark local model outputs.

Use symbolic-rule games to benchmark local model outputs:

```bash theme={null}
pip install python-chess
arka play chess --moves e2e4 e7e5 g1f3 b8c6 --json
```

Arka validates every move against the chess rules, reports illegal moves and
accuracy, and returns the final FEN. The same harness can be extended with
other deterministic games; an illegal model action never changes the board.


## Related topics

- [MCP integration for Cursor and Claude](/guides/mcp.md)
- [LLM orchestration with multi-provider failover](/concepts/llm.md)
- [Arka CLI command and flag reference](/guides/cli.md)
- [Open URL in browser](/guides/open-url.md)
- [YouTube research and downloads](/guides/youtube.md)