# Guidon developers

> How to use Guidon's REST API and MCP server: authentication with API keys, scopes, the MCP endpoint for AI agents, endpoints and errors.

## Docs

- [Developer guide](https://useguidon.com/developers.md): authentication, scopes, quickstart, MCP setup, endpoint table, errors, rate limits, idempotency, pagination, batch, versioning
- [OpenAPI 3.1 document](https://useguidon.com/openapi.json): every /api/v1 operation with request and response schemas
- [API catalog](https://useguidon.com/.well-known/api-catalog): RFC 9727 linkset pointing at the API descriptions
- [Agent skills](https://github.com/two-steps-studio/guidon/tree/main/skills): task workflow, API integration and CLI guidance; install individually with `npx skills add two-steps-studio/guidon --skill <name>`

## Optional

- [Site-wide guide for agents](https://useguidon.com/llms.txt)
- [Pricing](https://useguidon.com/pricing.md)