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REST API
restful-api.dev
Free Real REST API โ€“ Full CRUD Support (GET, POST, PUT, PATCH, DELETE) for Testing & Learning
Learn about restfulโ€‘api.dev - a free platform helping developers, students, and educators explore, test, and master RESTful APIs through practical tools and public endpoints.
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ReqBin
reqbin.com
Online API Testing Tool | Test Your API Online
Online API testing tool: send HTTP requests from your browser and check what the API endpoint returns. A free Postman online alternative โ€” no install, no login.
Discussions

Is there a dummy API for testing/practice?
There are plenty of free APIs you can use for learning - https://github.com/toddmotto/public-apis/ More on reddit.com
๐ŸŒ r/javascript
26
34
December 15, 2017
Can anyone recommend an open API for testing purposes?
Restful booker API Restful-booker an API that you can use to learn more about API Testing or try out API testing tools against. Restful-booker is a Create Read Update Delete Web API that comes with authentication features and loaded with a bunch of bugs for you to explore. The API comes pre-loaded with 10 records for you to work with and resets itself every 10 minutes back to that default state. Restful-booker also comes with detailed API documentation to help get you started with your API testing straight away. More on reddit.com
๐ŸŒ r/QualityAssurance
17
6
October 6, 2022
How to Unit Test Next.js API Routes with Typescript

For an easier time without so much boilerplate (and to receive actual NextApiRequest and NextApiResponse objects), I wrote a package for this: https://www.npmjs.com/package/next-test-api-route-handler (shameless plug!)

More on reddit.com
๐ŸŒ r/reactjs
2
14
February 21, 2022
How to test if the 500 error handling of my API works as expected, if every time I run a test, the API runs without errors? How to force an error, to then test error handling. I'm using Jest.
The problem is you have code that is working as expected. You need to be able to replace some part of the implementation with some thing that errors. Hard to great concrete example but if you have some routing to a piece of code that Iโ€™d the โ€œhandlerโ€ then if you replace the handler w something like function goBoom(req) { throw new Error(โ€œintentionalโ€) } Then you should be set. The trick is how you replace that implementation for your test and not enough context for that More on reddit.com
๐ŸŒ r/node
5
3
November 7, 2019
People also ask

What is the best free API for testing?
ReqRes provides a free hosted REST API with real endpoints, authentication, persistent data, and request logs. Unlike static mock APIs, it returns real HTTP status codes and supports CRUD operations, making it ideal for Postman, Playwright, and CI testing.
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reqres.in
reqres.in โ€บ home โ€บ blog โ€บ free api for testing - real rest endpoints you can use now
Free API for Testing - Real REST Endpoints You Can Use Now | ReqRes ...
What is the difference between a mock API and a real test API?
A mock API intercepts requests in your test code and returns hardcoded responses. A real test API like ReqRes actually processes requests over HTTP, returning real status codes, headers, and response times. Real test APIs catch issues that mocks miss, like auth failures, network errors, and payload validation.
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reqres.in
reqres.in โ€บ home โ€บ blog โ€บ free api for testing - real rest endpoints you can use now
Free API for Testing - Real REST Endpoints You Can Use Now | ReqRes ...
How do I test an API without a backend?
Use a hosted test API like ReqRes. Get a free API key, add it as an x-api-key header, and send requests to endpoints like https://reqres.in/api/users. No backend setup, database, or server required.
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reqres.in
reqres.in โ€บ home โ€บ blog โ€บ free api for testing - real rest endpoints you can use now
Free API for Testing - Real REST Endpoints You Can Use Now | ReqRes ...
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ReqRes
reqres.in โ€บ home โ€บ blog โ€บ free api for testing - real rest endpoints you can use now
Free API for Testing - Real REST Endpoints You Can Use Now | ReqRes Blog
2 days ago - Get a free REST API for testing your frontend, Postman collections, or Playwright suites. No setup, real responses, with auth and persistent data.
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JSONPlaceholder
jsonplaceholder.typicode.com
JSONPlaceholder - Free Fake REST API
JSONPlaceholder is a free online REST API that you can use whenever you need some fake data: in documentation and tutorials, in code examples, in a quick prototype, or simply to test things locally.
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Beeceptor
beeceptor.com โ€บ use cases โ€บ sample api for testing
Sample API For Testing | Beeceptor
Get access to free sample APIs for testing REST, frontend, and automation workflows. Beeceptor provides ready-to-use mock APIs and dummy endpoints for developers to experiment, debug, learn, and validate API integrations without backend setup.
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API Checker
apichecker.io โ€บ home
API Checker - Free Online API Testing Tool | Import cURL, Generate Code, Compare Responses
Free REST API testing with cURL import, code generation, response comparison, collection export/import, and 50-request history. No signup required.
Find elsewhere
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Gadegetkit
gadegetkit.com โ€บ tools โ€บ dev-tools โ€บ api-tester
Online API & Endpoint Tester | Free REST & HTTP Client
June 21, 2026 - Test your REST or other HTTP APIs directly in your browser. Our free online API tester allows you to configure requests, view responses, and debug endpoints instantly.
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Beeceptor
beeceptor.com
Mock APIs - Free REST & SOAP APIs for Devs & QA
Create AI-powered mock servers in seconds. Generate realistic responses from prompts or real traffic for REST, SOAP, GraphQL, and gRPC. No code, no dependencies. Free
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Apibanana
apibanana.com โ€บ home โ€บ free tools โ€บ api tester
Free API Endpoint Tester โ€” Test Any REST API Online | ApiBanana
Test any REST API endpoint online for free. Send GET, POST, PUT, DELETE requests, view response headers, status codes, and body. No signup required.
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Digital ToolPad
digitaltoolpad.com โ€บ tools โ€บ api-tester
Online API Testing Tool | Free REST & API Tester
Test your REST APIs online instantly. A fast, free, and 100% client-side API client running in your browser.
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Site24x7
site24x7.com โ€บ tools โ€บ restapi-tester.html
REST API Tester | Site24x7 Tools
Check the availability and performance of your first and third party APIs from multiple locations worldwide using our free tool.
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Exit1
exit1.dev โ€บ home โ€บ tools โ€บ api status checker
Free API Status Checker: Test Endpoint Health & Uptime | exit1.dev
May 4, 2026 - Check any API endpoint in one request: status code, response time, security headers, CORS and the full redirect chain. Free, no signup.
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MiniWebtool
miniwebtool.com โ€บ home page โ€บ text tools โ€บ other text tools โ€บ api tester
Free API Tester - Test REST Endpoints with Custom Headers
March 7, 2026 - API Tester is a free, browser-based tool for testing REST API endpoints instantly. Send HTTP requests with custom methods, headers, authentication, and request bodies โ€” then inspect the response status, timing, headers, and formatted body.
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Apipheny
apipheny.io โ€บ home โ€บ free api โ€“ 90+ public apis for testing [no key]
Free API - 90+ Public APIs For Testing [No Key] - Apipheny
July 11, 2026 - Humongous list of free APIs for finance, sports travel, data, & more. Open, public REST APIs for testing without a key.
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AIFreeForever
aifreeforever.com โ€บ tools โ€บ api-test
Free API Tester - Test REST APIs Online with File Upload
June 14, 2026 - API Tester: send GET, POST, PUT, PATCH, DELETE requests to any endpoint, inspect response headers and body, upload files, and debug APIs directly in your bro...
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Gen-Endpoint
gen-endpoint.com
Free Public REST API Endpoints for Testing & Development | Gen-Endpoint
A: Yes. Every API endpoint on Gen-Endpoint is free to use with no signup, no API key, and no rate limits for personal and development use.
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REST test test
resttesttest.com
REST test test...
REST test test... ... ร— Welcome! Use this simple page to poke around at the API. Specify HTTP method, URL and parameters, and click on Ajax Request.