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MockServer

Build faster, mock smarter.·mockserver.in

MockServer is a cloud-hosted tool for creating instant HTTP mock API endpoints with custom JSON responses, dynamic path parameters, latency simulation, and real-time traffic logs. It offers Quick Mocks, which generate temporary no-signup mock URLs valid for 72 hours, as well as persistent mocks for users signed in with Google or GitHub. The product also includes a free hosted Fake REST API with sample datasets and a Webhook Debugger for capturing, inspecting, and replaying inbound webhook traffic.

What it's for

Building and testing UI without waiting for a real backendSimulating flaky services and testing retry logicTesting loading states and timeout handling with latency simulationSharing a proposed API contract with teammates before implementationSimulating specific API responses for edge-case QA testingCreating reproducible API examples for demos or tutorialsCapturing and inspecting inbound webhook trafficPrototyping without spinning up a real server

Features 20

AI-generated mock JSON responses from plain-English descriptions
Configurable CORS headers
Custom JSON response bodies
Custom response headers
Dynamic path parameters (e.g. {id}, {slug})
Dynamic response variables ({{request.query}}, {{request.body}}, {{request.headers}}, etc.)
Free browser-based developer tools (JSON Formatter, Diff, JWT Decoder, Base64 Encoder, etc.)
Free hosted Fake REST API with sample datasets (users, posts, comments, todos, products)
Instant HTTP mock API endpoint creation
Intermittent failure simulation with configurable fail rate
Latency simulation (fixed delay or random range)
Pagination and filtering on Fake API endpoints
Quick Mocks: no-signup mock URLs valid for 72 hours
Rate limiting on Fake API (120 requests/minute per IP)
Real-time traffic logs (method, headers, body, timestamp, IP)
Shareable read-only mock links
Sign in with Google or GitHub
Simulated writes (POST/PUT/PATCH/DELETE) on Fake API without persistence
Support for GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS methods
Webhook Debugger for capturing, inspecting, and replaying inbound webhooks

At a glance

free tier

TypeWeb app

DeploymentCloud

PlatformsWeb

Forfrontend developers, mobile developers, QA engineers, backend developers, developer advocates, educators, prototype builders

CompanyFast Pigeon Enterprise

Integrations

PostmancURLGoogleGitHubStripeRazorpayInsomniaHTTPieThunder Client

Resources

Pricing

Payment methods: UPI, Net Banking, Credit/Debit cards, and Wallets via Razorpay; international cards accepted for USD payments. 7-day money-back guarantee. Cancelling keeps Pro access until end of current billing period. Downgrading preserves existing mocks but deactivates ones over the free limit.

FreeFree

20 mocks, Latency simulation, 1-day traffic logs, 5s log refresh, Quick Mocks (no login), 1-day / 10 versions history

20 mocks, 1-day traffic logs, 5s log refresh, Quick Mocks 1-day / 10 versions history

Pro$12/mo

Introductory pricing also shown in INR: ₹199/month (regular ₹399) billed monthly, ₹149/month (regular ₹349) billed annually (₹1,788/year, save ₹600/yr); price locked in for as long as subscription stays active. USD annual: $120 billed annually, save $24/yr.

Unlimited mocks, 30-day traffic logs, 1s real-time log refresh, 30-day / 100 versions history

Introductory pricing on Pro plan (₹199/month vs regular ₹399, or ₹149/month vs regular ₹349 annually), locked in for the life of the subscription