> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developers.upwardli.com/concepts/working-in-sandbox/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developers.upwardli.com/_mcp/server.

# Working in Sandbox

## Docs

- [Working with Sandbox](https://developers.upwardli.com/concepts/working-in-sandbox/introduction.md)
- [Sandbox Testing](https://developers.upwardli.com/concepts/working-in-sandbox/sandbox-testing.md)