MCP Playground

Interactive

Build, validate, and test MCP servers in your browser

Start with a template:

Starter Template

Basic server with greeting tool

Tip: Descriptions Matter

AI uses your tool descriptions to decide when to use them. Be specific and clear!

Tip: Test Your Tools

Use the "Test Tools" tab to simulate tool calls and verify your logic works correctly.

Tip: Use Zod Wisely

Add .describe() to Zod schemas so AI knows what each parameter means.