# mockoon/mockoon

Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

Repository: https://github.com/mockoon/mockoon
Canonical: https://ross.abutalabs.com/products/mockoon
Homepage: https://mockoon.com
Language: TypeScript
License: MIT
License Family: permissive
Topics: mock, server, rest-api, rest, application, electron, desktop, api, prototyping, swagger, openapi, openapi3, mock-server, mock-data, mock-api, mocking, mocking-utility, mocking-server
Last push: 2026-08-26T14:41:08+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 83, longevity 100
- inputs: {"age_days": 3334, "days_push": 7, "days_rel": 33, "gap_med": 77, "n_releases_24m": 10}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8379, forks 470 (observed 2026-08-28T04:10:20.669251+00:00)

## What it is
Mockoon is a free, open-source desktop application (built with Electron) for designing and running mock REST APIs locally, with a companion CLI for headless/CI environments. It supports OpenAPI import/export, JSON templating, proxy forwarding, request recording, CRUD routes, and a paid cloud tier for team collaboration.

## Use cases
- mock a REST API locally while the backend is still in development
- run fake APIs in CI pipelines or Docker containers
- import an OpenAPI/Swagger spec and generate mock endpoints
- simulate error responses, latency, and edge cases for integration testing
- proxy and record real API responses to replay later
- self-host mock APIs with a CLI for frontend development

## When to choose
- you need a GUI to quickly spin up mock REST servers without writing code
- you want local, offline API mocking with no account or remote deployment
- you need headless mocking in CI, Docker, or GitHub Actions via the CLI
- you work with OpenAPI specifications and want import/export support

## When to avoid
- you need contract-testing tools like Pact with consumer-driven contracts
- you only need simple HTTP stubs inside unit tests where a code library like WireMock or nock fits better
- you require GraphQL or gRPC mocking rather than REST/WebSockets
- you need cloud-hosted mocks without paying for Mockoon Cloud

## Facets
- artifact type: application
- maturity: active
- function: mocking, http-server, cli, developer-tools, api-framework
- domain: developer-tools, apis, web-development, testing
- platform: cross-platform, cli, windows
- tags: api-mocking, mock-server, openapi, rest-api, electron-app, fake-api, proxy-mode, mcp-server, desktop, nodejs, docker, macos, linux

## Member repositories
- mockoon/mockoon (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:20.669251+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:27:28.365848+00:00, confidence not recorded.
  - readme: https://github.com/mockoon/mockoon (fetched 2026-08-28T04:10:20.669251+00:00, sha a350296542b4)
  - homepage: https://mockoon.com (fetched 2026-08-29T08:27:45.445013+00:00, sha e41c0299b30f)
  - site_page: https://mockoon.com/docs/latest/about (fetched 2026-08-29T08:27:45.456597+00:00, sha 7e4e3a619638)
  - site_page: https://mockoon.com/cloud/docs/about (fetched 2026-08-29T08:27:45.458510+00:00, sha 5cef295d35a6)
  - site_page: https://mockoon.com/features (fetched 2026-08-29T08:27:45.462090+00:00, sha fe03f65bcaa3)
  - site_page: https://mockoon.com/tutorials/getting-started (fetched 2026-08-29T08:27:45.465646+00:00, sha 220f027b965e)
  - site_page: https://mockoon.com/pricing (fetched 2026-08-29T08:27:45.454409+00:00, sha 3386a115c7aa)
  - site_page: https://mockoon.com/releases/9.8.0 (fetched 2026-08-29T08:27:45.460176+00:00, sha c7c758549d6b)
  - site_page: https://mockoon.com/faq (fetched 2026-08-29T08:27:45.463916+00:00, sha c35f4c21c32f)
  - site_page: https://mockoon.com/integrations/embedded-button (fetched 2026-08-29T08:27:45.467367+00:00, sha 4121665fd65f)
- Data as of 2026-08-30T08:39:29.467469+00:00.