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.

Running a `.mmt` file (important)

When you ask Copilot to run a test or API file, it must call the run MCP tool:Markdown (no JavaScript)# Running a `.mmt` file (important) When you ask Copilot to **run** a test or API file, it must call the **`run` MCP tool**: ``` run({ file: "tests/echo_test.mmt", workspaceRoot: "/path/to/workspace" }) ``` Copilot should **not**: - run `testlight` or `npx testlight` - run `node dist/mcp/server.js` directly - install npm packages or debug the MCP tarball - use the `mmt-mcp` binary as a CLI runner (`mmt-mcp` is the MCP stdio server only) If Copilot tries shell/CLI workarounds instead of the `run` tool, check that: 1. **Copilot agent mode** is enabled 2. The **Multimeter** MCP server is enabled in the MCP tools list 3. You are on a recent VS Code build with MCP support (1.101+ recommended) For AI agents · llms.txt · Home