# Formify API > The Formify API lets you send documents for electronic signature, > track signing status, and retrieve signed documents. > Built on REST — all responses are JSON. ## Guides - [Getting Access](https://developers-next.formify.eu/guides/getting-access/): How to obtain OAuth 2.0 client credentials - [Integration Flows](https://developers-next.formify.eu/guides/integration-flows/): Step-by-step guides for common scenarios - [Production Checklist](https://developers-next.formify.eu/guides/production-checklist/): Security and reliability checklist - [Changelog](https://developers-next.formify.eu/changelog/): API version history ## API Reference - [Full API reference as Markdown](https://developers-next.formify.eu/llms-full.txt): All endpoints with request/response schemas - [OpenAPI specification](https://developers-next.formify.eu/openapi.json): Machine-readable OpenAPI 3.x spec