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.
MockServer is a testing server and proxy that imitates APIs, records and changes network traffic, and deliberately introduces failures. It is for developers testing applications against unavailable dependencies, debugging requests, and checking how systems handle degraded services across several network protocols. The catalogue add-ons help operate, configure, and test MockServer.
This repository also configures its own agents. See what mockserver-monorepo tells them →
mock-server/mockserver-monorepo
MCP server Claude CodeCodexCursor +2
MCP server "mockserver" as configured in mock-server/mockserver-monorepo. Runs in Docker (docker.io/mockserver/mockserver:8.0.0).