Multimeter is a Git-native REST client and API testing tool for VS Code. Requests, tests, mocks, and docs are YAML .mmt files in Git — the same files in the visual editor and in CI via testlight. Apache 2.0. No account.

How do I use Multimeter with Cursor, Copilot, or Claude?

Install the VS Code/Cursor extension or add MCP with npx -y mmt-mcp. Agents should call scaffold_test, validate, format, and run instead of guessing .mmt syntax.

Yes. Apache License 2.0. No account required.

Get Started — Multimeter docs

Walk through a first POST request from the Multimeter activity bar.Markdown (no JavaScript)# Get Started Walk through a first POST request from the Multimeter activity bar. Use the **Get Started** panel ({{btn:rocket:Get Started}}) after install. It sits under [Temp Files](./temp-files.md) and coaches a simple echo request against [test.mmt.dev](https://test.mmt.dev). ## What you can use it for - Learn the empty gallery, YAML editor, and **Send** button without reading the full docs first - Create a temp `.mmt` file and fill a sample POST - Send, change the body, and send again so the Response panel makes sense - Come back later with **Reset Get Started** if you want to repeat the walkthrough ## How it works The panel has two levels: a short welcome, then **Your first request**. Each step has a **How** link. Some How actions fill the file, send the request, or point a coach arrow at the control to click. | Step | What it does | |---|---| | **Create a .mmt file** | Opens a temp file on the empty gallery — also listed in [Temp Files](./temp-files.md) | | **Write type: api for a POST** | Type the YAML on the left, or let How fill a sample POST to `https://test.mmt.dev/echo` | | **Send the first POST** | Click **Send**. The response appears on the right | | **Change the body message** | Edit `message` in the left YAML (not the tester pane) | | **Send again** | Confirm the new body comes back in the response | | **Save the file** | Persist the YAML (`Cmd+S` / `Ctrl+S`). Tester-only edits on the right stay temporary until **UNSAVED CHANGES** → **Save to YAML** | When you finish, the panel offers next steps (docs, GitHub, marketplace). Command Palette → **Multimeter: Reset Get Started** starts the walkthrough over. --- ## See also - [Getting Started](../quick-start.md) — install and a first API file - [Panels](./index.md) — all sidebar and bottom panels - [Temp Files](./temp-files.md) — scratch drafts from this walkthrough - [API](../files/api/index.md) — send, inputs, and the tester For AI agents · llms.txt · Home