> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.a1.uk.astutepayroll.in/api-reference/authentication/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.a1.uk.astutepayroll.in/_mcp/server.

# Authentication


## API Docs

- [OAuth Authorization](https://docs.a1.uk.astutepayroll.in/api-reference/authentication/o-auth-authorization.md): Authentication
- [OAuth Token](https://docs.a1.uk.astutepayroll.in/api-reference/authentication/o-auth-token.md): Authentication

## OpenAPI Specification

- [OpenAPI JSON](https://docs.a1.uk.astutepayroll.in/openapi.json): raw OpenAPI 3.1 specification for this API, JSON format
- [OpenAPI YAML](https://docs.a1.uk.astutepayroll.in/openapi.yaml): raw OpenAPI 3.1 specification for this API, YAML format