mockserver-monorepo: Rapid HTTP/HTTPS Mocking for Any Integration
From the repo · “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.”
Create a mock version of any system you integrate with via HTTP or HTTPS to test it without using the real thing, like a mock Amazon server to test your e-commerce app.
"A founder wants to test the payment processing of their new e-commerce app. They set up a mock Stripe server using MockServer and create a few test customers. They then write a script to simulate real payments and test the app's behavior. After testing, they know their app will work seamlessly with Stripe."
- •When integrating with multiple external services and need to test how your application behaves with different responses
- •When developing against an API that is still in development or has rate limiting
- •When testing error scenarios or edge cases that are difficult to replicate with real services
curl -v -X 'PUT' 'http://localhost:1080/mockserver/expectation' -H 'Content-Type: application/json' -d '{"httpRequest":{"method":"POST","path":"/login"},"httpResponse":{"statusCode":200,"body":" authenticated successfully"}}'Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.
Expect 20–40 minutes in a terminal — or let your AI agent drive it.
mkdir -p ~/.claude/skills/mockserver-monorepo && curl -fsSL https://workflowstacks.com/api/skills/mockserver-monorepo/claude-skill -o ~/.claude/skills/mockserver-monorepo/SKILL.mdOpens the app with this repo with the prompt ready to go — no copy-paste needed.
Mockserver-monorepo: Rapid HTTP/HTTPS Mocking for Any Integration is a very large Java project (~500k lines across 2440 code files, plus 1811 test files). It is a full software project: use it through its install path rather than reading it end to end. Last commit this month, Apache-2.0 license, has a test suite.
- 1README.mdStart here — what it does and how to install it
- 2AGENTS.mdThe instructions the AI actually follows
- 3mockserver-node/index.jsWhere the program starts running
- 4examples/README.mdA worked example — copy this to get going
Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.
Expect 20–40 minutes in a terminal — or let your AI agent drive it.
mkdir -p ~/.claude/skills/mockserver-monorepo && curl -fsSL https://workflowstacks.com/api/skills/mockserver-monorepo/claude-skill -o ~/.claude/skills/mockserver-monorepo/SKILL.mdOpens the app with this repo with the prompt ready to go — no copy-paste needed.
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Do this with a working workflow
Pages we wrote and tested that put a skill like this to work — importable n8n templates, outcome guides and Claude Desktop configs.
Context7 (live docs) MCP config
Pull up-to-date library docs into Claude so it codes against the real API.
Free n8n templateReview Reply Drafter
Draft personalized, on-brand replies to every customer review — including careful responses to negative ones. You approve before anything is posted.
Outcome guideAutomate replies to your customer reviews
The workflow reads your reviews and drafts a personalized reply for each: warm thanks for happy customers, careful and de-escalating for unhappy ones. Nothing posts automatically — you approve every draft.
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