Create tools

These guides are for developers who build custom servers and with Arcade.

These guides cover writing new tools. If the server already exists and is reachable over HTTP — yours, a vendor’s, or a partner’s — register it as a remote MCP server instead of rebuilding its .

Guides

Build a tool

Learn the fundamentals of building tools with Arcade's MCP Server framework

Evaluate tools

Learn how to systematically test and improve your tools with Arcade's evaluation framework

Handle errors

Learn how to implement robust error handling in your tools for better user experience

Secure your server

Migrate from toolkits

Learn how to migrate your existing Arcade toolkit to the new MCP Server framework

Types of tools

Learn about Optimized and Unoptimized tools