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.

OS variables — Multimeter docs

Env values that are exactly $NAME (POSIX-ish name) read from the host process environment at run time — the shell for testlight, the VS Code / Cursor…Markdown (no JavaScript)# OS environment variables (`$VAR`) Env values that are exactly `$NAME` (POSIX-ish name) read from the **host process environment** at run time — the shell for `testlight`, the VS Code / Cursor process for the extension. ```yaml type: env variables: path_from_os: $PATH api_url: local: "http://localhost:8080" prod: $PROD_URL ``` Consumers still use Multimeter tokens (`e:path_from_os`, `<<e:path_from_os>>`). The `$…` form is only the **definition** in the env file (or a selected List/Object choice value). ## Rules - Whole value only: `$PATH` is a ref; `https://$HOST` is a plain string. - Unset or empty OS vars resolve like a missing Multimeter env (same as unset `e:name`). - In Edit Environment, Type **OS** edits the process env name; YAML stores `$NAME`. - The Environment panel shows an `(os)` chip / type label `os` for matching values. ## Example [Environment Variables (intermediate)](../../../examples/intermediate/10_environment_variables/README.md) defines `path_from_os: $PATH` and posts it in the echo **body** (not the URL) under `os_variables/`. ```sh npx testlight run examples/intermediate/10_environment_variables/os_variables/path_test.mmt \ --env-file examples/intermediate/10_environment_variables/multimeter.mmt \ --preset runner.dev ``` See also: [Live variables](./live-variables.md) · [CLI](./cli.md) · [Overview](./index.md) For AI agents · llms.txt · Home