mock-server/mockserver-monorepo
MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSockets, TCP and more on a single port, with additional support for HTTP/3, message brokers, and AI/LLM APIs. observed · 2026-08-28
Health v2 · maintenance only
99/100
- Activity 99
- Release rhythm 98
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 8.5
- age_days: 4936
- days_rel: 16
- days_push: 7
- n_releases_24m: 9
Adoption not part of the score
4953 stars · 1115 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
MockServer is an open-source HTTP(S) mock server and proxy for testing that can mock APIs, record and inspect live traffic, and inject failures for chaos testing. It supports HTTP/1.1, HTTP/2, HTTP/3, gRPC, WebSockets, TCP, message brokers, and AI/LLM APIs on a single port, with clients for Java, JavaScript, Ruby, and Python.
Use cases
- mock third-party APIs my tests depend on
- record and replay live HTTP traffic for debugging
- inject latency and errors to test service resilience
- mock OpenAI or Anthropic LLM APIs in tests
- generate mocks from an OpenAPI specification
- verify which requests my service sent and in what order
When to choose
- you need deterministic, isolated tests against unavailable or in-development dependencies
- you want one tool that mocks many protocols including gRPC, WebSockets, and message brokers
- you need chaos engineering or traffic recording/proxying alongside mocking
When to avoid
- you only need simple static JSON fixtures with no matching or verification logic
- you want a lightweight in-process mocking library rather than a standalone server
Facets
service · maturity active
mock-api http-server proxy testing e2e-testing mcp testing developer-tools apis self-hosted jvm python cli mock-server chaos-engineering llm-mocking grpc websockets openapi traffic-recording devops docker nodejs
2 sources
- readme: https://github.com/mock-server/mockserver-monorepo · fetched 2026-08-28 · 762e89666dc9
- homepage: https://www.mock-server.com · fetched 2026-08-29 · 4a5d2702ddb3
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| mock-server/mockserver-monorepo | main | 99 |
For agents
markdown · JSON · MCP: product_card(name="mock-server/mockserver-monorepo")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem