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Dev tools · March 26, 2026

mockr-cli

Mock a REST API with one JSON file

What it does

mockr lets you create a fake REST API by just writing a JSON file. no server configuration required, no dependencies to configure. one command and you are done. useful if your backend is not yet ready but you still want to work on the frontend. it supports route params, custom status codes, response delays, random responses, and watch mode. use it by running `npx mockr-cli start` or generate a starter config with `mockr-cli init`.

Does the same job

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    Hi HN! I'm Ankit, the founder of Beeceptor, a request mocking and intercepting tool. This time, I built something new to address a pain I’ve personally felt (and heard from dozens of QA, frontend, and platform teams): making OpenAPI specs actually useful during development. API contracts just sit around as docs often. What if you could 'activate' them, instantly have a realistic, hosted mock server-with contract validation, smart test data, and early usage? So I made _Mockaroo for OpenAPI_, but with brains. It spins up a hosted mock server from your spec in one click. It: - Generates…

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