Changelog

Stay up to date with the latest changes to the Felloh API, SDKs, and developer documentation.

April 2026

Added Model Context Protocol (MCP) server documentation — connect AI editors like Cursor, VS Code, Claude Desktop, and ChatGPT to Felloh via MCP at mcp.api.felloh.com
Added Agentic Billing Workflows guide — end-to-end guide for building AI-powered travel payment workflows
Added one-click install buttons for Cursor and VS Code MCP integration

Added Testing page with sandbox environment details, test card numbers (Visa, Mastercard, Amex), decline simulation cards, 3D Secure test cards, and a go-live checklist

Added C# SDK documentation — installation, examples, pagination, error handling, and webhook verification
Added PHP SDK documentation — installation, examples, pagination, error handling, and webhook verification
Added Python SDK documentation — async SDK with installation, examples, pagination, error handling, and webhook verification
Added Perl SDK documentation — installation, examples, pagination, error handling, and webhook verification
Added Ruby SDK documentation — installation, examples, pagination, error handling, and webhook verification
Expanded Node.js SDK documentation with additional examples and webhook verification

Added Security at Felloh overview page
Added Integration Security Guide with best practices for securing your Felloh integration
Added Handling Deletion Requests guide for GDPR compliance

Added webhook signing documentation — HMAC-SHA256 signature verification with code examples in JavaScript, Python, PHP, and C#

Added Acquirer Settlement resource documentation — batch settlement data from payment processors
Added Dynamic Currency Conversion (DCC) documentation to transaction resources
Added booking reference field documentation across resources