Multimeter MCP server

Git-native REST client and API tests in VS Code. YAML .mmt files in Git.

Demo · Website · Request Feature · VS Code · CLI · GitHub Action · Docs · llms.txt

🚀 Start with a request. Grow into a platform.

Multimeter is Git-native API testing in VS Code. Requests, tests, mocks, and docs are YAML .mmt files in your repo.

Start with a single HTTP request.

Grow into tests, suites, mocks, reports, documentation, and CI when you need them.

All in the same tool. No migration. No second product.

🎯 What you get

Simple by default

• ✅ Git-native, file-based YAML
• ✅ Lightweight — no account, no cloud lock-in
• ✅ Collaboration through pull requests, like code
• ✅ The same files locally and in CI

A full testing platform when you need it

• ✅ HTTP, WebSocket, GraphQL, and gRPC
• ✅ Multi-step flows and test suites
• ✅ Mock servers
• ✅ Generated documentation
• ✅ Reports
• ✅ CI with testlight

AI in the same files

• ✅ Generate tests from an API or a description (Cursor, Copilot, Claude via MCP)
• ✅ Judge replies — semantic similarity, or open-ended checks like how funny a response is
• ✅ Bring your own model (Ollama or cloud)

See all features →

⚡ Start simple

Multimeter is a VS Code-native extension. All you need:

• Click Install button in Multimeter VS Code Extension
• Open Get Started from the Activity bar and follow the instructions

There you run a POST request as follows:

type: api
title: Simple POST
url: https://test.mmt.dev/echo
method: post
format: json
body:
  message: hello

That's enough.

• No suites.
• No mocks.
• No workflows.
• No complexity.

🧪 Need tests?

type: test
steps:
  - http: https://test.mmt.dev/echo
    method: get
    expect:
      status: 200

• Still simple.
• Still Git-native.
• Still easy to review.

🚀 Scale without switching tools

As your project grows, Multimeter grows with it.

Add:

• Test suites
• Mock servers
• Documentation
• Workflow execution
• Structured reporting
• CI artifacts

Only when you need them.

Everything stays in the same ecosystem.

See all examples →

🤖 MCP, AI generation, and AI judges

Shortened. The full README is on GitHub.