# Multimeter

> Multimeter is an AI-powered REST Client and API testing tool for VS Code and CI. It is not an electrical multimeter. Tests are YAML .mmt files in Git. The CLI is testlight (npm mmt-testlight). The MCP server is @mmt/mcp for Cursor, GitHub Copilot, and Claude. Git-native alternative to Postman. Judge API answers with AI (semantic similarity or open-ended checks) in the same test flow — also an alternative to Promptfoo. Apache License 2.0. No account required.

Website: https://mmt.dev
Docs: https://mmt.dev/docs/quick-start
Repo: https://github.com/mshobeyri/multimeter
Marketplace: https://marketplace.visualstudio.com/items?itemName=mshobeyri.multimeter
npm CLI: https://www.npmjs.com/package/mmt-testlight
MCP: https://www.npmjs.com/package/@mmt/mcp
GitHub Action: https://github.com/mshobeyri/testlight-action
Agent briefing (no JS): https://mmt.dev/for-agents.html
Full map: https://mmt.dev/llms-full.txt
This file: https://mmt.dev/llms.txt · https://mmt.dev/.well-known/llms.txt

## Use with AI agents

- Cursor / Claude / Copilot: MCP `npx -y @mmt/mcp` or the bundled VS Code MCP server
- First tools: `scaffold_test`, `validate`, `format`, `run` — do not invent `.mmt` syntax
- Workflow: https://mmt.dev/raw/docs/AI/agent-workflow.md
- MCP overview: https://mmt.dev/docs/features/mcp
- Judge (AI checks): https://mmt.dev/docs/files/judge
- Cursor/Claude clients: https://mmt.dev/docs/features/mcp/other-mcp-clients

## Humans

- Install: https://mmt.dev/docs/install
- `.mmt` API: https://mmt.dev/docs/files/api
- `.mmt` test: https://mmt.dev/docs/files/test
- Testlight CLI: https://mmt.dev/docs/features/testlight/install
- Compare Postman: https://mmt.dev/compare/postman
- Compare Bruno: https://mmt.dev/compare/bruno
- Compare Promptfoo: https://mmt.dev/compare/promptfoo
- Min docs pack: https://mmt.dev/raw/docs/AI/min/overview.md

## Raw markdown (crawler-friendly)

Prefix https://mmt.dev/raw/docs/ plus the path under `docs/` in the repo, for example:

- https://mmt.dev/raw/docs/quick-start.md
- https://mmt.dev/raw/docs/files/test/index.md
- https://mmt.dev/raw/docs/files/judge/index.md
- https://mmt.dev/raw/docs/features/mcp/mcp-tools.md