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

# Authentication

## Docs

- [Core Concepts](https://developers.upwardli.com/concepts/authentication/introduction.md): Learn about the key concepts of the Upward API.
- [Oauth 2.0 Authentication](https://developers.upwardli.com/concepts/authentication/o-auth-2-0.md)
- [Token Exchange](https://developers.upwardli.com/concepts/authentication/token-exchange.md)