# Felloh Developer Documentation > Official documentation for integrating with the Felloh API, SDKs, and MCP server. Base docs URL: https://developers.felloh.com Production API: https://api.felloh.com Sandbox API: https://sandbox.felloh.com ## Primary Entry Points - [Introduction](https://developers.felloh.com/) - [Quickstart](https://developers.felloh.com/quickstart) - [Authentication](https://developers.felloh.com/authentication) - [Testing (Sandbox)](https://developers.felloh.com/testing) - [Errors](https://developers.felloh.com/errors) - [Changelog](https://developers.felloh.com/changelog) ## API Reference - [OpenAPI Spec](https://developers.felloh.com/openapi.json) - [Bookings](https://developers.felloh.com/resources/bookings) - [Transactions](https://developers.felloh.com/resources/transactions) - [Payment Links](https://developers.felloh.com/resources/payment-links) - [Scheduled Payments](https://developers.felloh.com/resources/scheduled-payments) - [Webhooks](https://developers.felloh.com/webhooks) ## SDK Documentation - [JavaScript SDK](https://developers.felloh.com/sdk/getting-started) - [Node.js SDK](https://developers.felloh.com/node-sdk/installation) - [Python SDK](https://developers.felloh.com/python-sdk/installation) - [PHP SDK](https://developers.felloh.com/php-sdk/installation) - [C# SDK](https://developers.felloh.com/csharp-sdk/installation) ## AI + MCP - [MCP Server](https://developers.felloh.com/mcp) - [Prompt Engineering](https://developers.felloh.com/prompt-engineering) - [Agentic Billing Workflows](https://developers.felloh.com/agentic-billing) - [Building AI Travel Agents](https://developers.felloh.com/building-ai-travel-agents) ## Security - [Security at Felloh](https://developers.felloh.com/security) - [Integration Security Guide](https://developers.felloh.com/security/guide) - [Deletion Requests (Privacy)](https://developers.felloh.com/privacy/deletion-requests) ## Agent Notes - Use sandbox keys and `https://sandbox.felloh.com` for testing. - Authenticate first via `POST /token`, then send `Authorization: Bearer `. - Prefer endpoint-specific resource pages above for request/response examples.