Mock Server

Instant HTTP mock API endpoints, no setup

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March 8, 2026 I got tired of switching between 5 tabs just to work with APIs — so I built everything into one tool

Every time I worked with APIs, I'd have one tab open for mocking endpoints, another for beautifying JSON, another for diffing responses, another for minifying payloads. It was killing my focus.

So I spent the last few months building MockServer — a single place where everything lives together.

Here's what you get:

  • 🔧 Instant HTTP mock API endpoints (no Docker, no YAML, no config)

  • 🤖 AI Mock Generator — describe what you need, get a mock instantly

  • 💥 Failure Simulator — test how your app handles timeouts, errors, and edge cases

  • 📋 Pre-configured templates to get started in seconds

  • 🔍 JSON Diff, Beautifier, and Minifier — all built in

  • 📡 Real-time traffic logs with full headers and body

  • 🔗 Shareable links for mocks

Who it's for: Frontend devs building against an unfinished backend, solo builders prototyping fast, QA engineers testing failure scenarios.

Free forever up to 20 mocks. No credit card. Sign in with Google or GitHub.

I'm building this solo and use it myself daily. Would love brutal honest feedback from this community — what's missing? What would make you actually switch to this?

👉 https://mockserver.in

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As a developer, I was constantly juggling 5+ browser tabs just to work with APIs — one for mocking, another to beautify JSON, another to diff responses, another to minify payloads. It was frustrating and broke my flow ev