Item logo image for Mock Studio: HTTP API Mock

Mock Studio: HTTP API Mock

mockstudio.app
ExtensionDeveloper Tools51 users
Item media 2 (screenshot) for Mock Studio: HTTP API Mock
Item media 1 (screenshot) for Mock Studio: HTTP API Mock
Item media 2 (screenshot) for Mock Studio: HTTP API Mock
Item media 1 (screenshot) for Mock Studio: HTTP API Mock
Item media 1 (screenshot) for Mock Studio: HTTP API Mock
Item media 2 (screenshot) for Mock Studio: HTTP API Mock

Overview

A simple yet powerful HTTP API mocking tool that lets you simulate real-world APIs, scenarios, and edge cases with ease.

Mock Studio is a strong API mocking and simulation tool built right into Chrome DevTools. You can create realistic mock APIs, test complex user flows, generate dynamic responses, and simulate real backend behavior, all within your browser. This tool is great for frontend developers, QA engineers, designers, and product teams. Key features: 1. Mock REST API Instantly Create mock endpoints with custom responses, headers, status codes, and delays. Override real network requests without changing backend code. 2. Mock Scenarios (Full User Journeys) Group multiple endpoints into a single scenario. Simulate login flows, checkout errors, pagination states, expired tokens, or failure chains with one click. 3. Live Request Logs See network activity in real time inside DevTools. Turn any request into a mock instantly. 4. Variants & Error Simulation Easily test: • success • validation errors • 401/403 auth failures • empty states • timeouts • random failures • slow backend responses 5. AI-Assisted Mock Generation (Pro), or use your own AI Credentials (BYOK - Bring Your Own Keys) Generate full mock collections, variants, and scenarios from: • API requests • OpenAPI/Swagger specs • Sample JSON • Real logs 6. Local-First & Privacy All mock configurations, scenarios, and response data are stored locally in your browser's IndexedDB. This data never leaves your device and is never transmitted to any server. If you sign in with Google (optional, required only for Pro features), we collect your email address, display name, and profile picture for authentication and subscription management. A session token is stored locally on your device and sent only to our server to verify your subscription status. Mock Studio does NOT collect browsing history, network request payloads, keystrokes, location data, financial information, or usage telemetry. We do not sell or share your data with third parties for advertising. Full Privacy Policy: https://mockstudio.app/privacy Change Logs: https://mockstudio.app/changelog

0 out of 5No ratings

Learn more about results and reviews.

Details

  • Version
    1.0.6
  • Updated
    May 12, 2026
  • Features
    Offers in-app purchases
  • Size
    3.49MiB
  • Languages
    English
  • Developer
    Website
    Email
    deny.hrnt@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

Mock Studio: HTTP API Mock has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Mock Studio: HTTP API Mock handles the following:

Personally identifiable information
Financial and payment information
Authentication information
Location

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

Related

Request Interceptor

4.2

Intercept and modify network requests: headers, query params, delay, response body, custom script/CSS injection.

Mockiato: Mock API Requests in DevTools

4.9

Intercept HTTP requests and mock responses in DevTools. Change status, body and headers. No proxy, no code changes.

Mock:Intercept and directly return data

4.4

拦截请求并直接返回 Mock 数据，包括 XMLHttpRequest、fetch类接口

Mokku

4.4

Adds the API mocker MOKKU to Chrome Developer Tools for seamless integration & testing.

Requestly: Intercept & Modify HTTP Requests

4.7

Intercept & modify HTTP(S) traffic: redirect URLs, modify headers, inject scripts, mock REST & GraphQL APIs, and more.

Mock Express - Modify, Mock & Intercept HTTP Requests Locally

5.0

Intercept, mock, and modify API requests directly in your browser. No server needed. 100% local and secure.

MockRabbit

5.0

一个基于Chrome的http请求录制和Mock插件

API Interceptor - Mock API Responses & Intercept HTTP Requests

5.0

Mock API responses in one click. Capture a real request, turn it into a mock. No account, no cloud — nothing leaves your machine.

Inssman: Open-Source: Modify HTTP Request

3.9

Intercept HTTP(S) Request, Modify Headers, Log headers, Change Response, Block Request, Redirect, Custom HTML/CSS/JS/JSON

Intercepta: modify and mock HTTP requests

5.0

Intercepts and mocks HTTP requests with custom responses based on user-defined rules for free.

API Mock & Intercept Tool

5.0

Mock network API requests for testing and development

Parrot API mocking

5.0

Hassle-free mocking of xhr and fetch calls.

Request Interceptor

4.2

Intercept and modify network requests: headers, query params, delay, response body, custom script/CSS injection.

Mockiato: Mock API Requests in DevTools

4.9

Intercept HTTP requests and mock responses in DevTools. Change status, body and headers. No proxy, no code changes.

Mock:Intercept and directly return data

4.4

拦截请求并直接返回 Mock 数据，包括 XMLHttpRequest、fetch类接口

Mokku

4.4

Adds the API mocker MOKKU to Chrome Developer Tools for seamless integration & testing.

Requestly: Intercept & Modify HTTP Requests

4.7

Intercept & modify HTTP(S) traffic: redirect URLs, modify headers, inject scripts, mock REST & GraphQL APIs, and more.

Mock Express - Modify, Mock & Intercept HTTP Requests Locally

5.0

Intercept, mock, and modify API requests directly in your browser. No server needed. 100% local and secure.

MockRabbit

5.0

一个基于Chrome的http请求录制和Mock插件

API Interceptor - Mock API Responses & Intercept HTTP Requests

5.0

Mock API responses in one click. Capture a real request, turn it into a mock. No account, no cloud — nothing leaves your machine.

Google apps