Application Development

Eliminate dependencies and reduce time to production by having front-end and back-end teams work in parallel.

Design and Develop Faster with Schema Support

Postman schema support gives you visibility into your API specifications and structure.

What is an API

Broad Schema Support

Use the API specification format of your choice in Postman. Write, edit, or import schema formats including RAML, WADL, OpenAPI, and GraphQL. Then generate collections directly from the schema.

Edit and Version Schema

Track and communicate changes to the API design by editing and versioning schemas in one central location. No more having to switch between tools.

Maintain a Single Source of Truth

Rely on your schema as a source of truth for API design and development and ensure all teams are working toward the same goal.

Simulate Your API Endpoints with Mock Servers

See how your API will run – even before it's in production. Mock servers simplify API design and planning, support split-stack development, and help you ensure that your API will run the way it's supposed to in production.

Reduce time to production

Postman mocks support split-stack development so front-end and back-end developers can work in parallel and view responses without spinning up a back end.

Communicate your API's expected behavior

View API responses with the applications and services waiting to use it before and during development.

Catch and fix bugs early

Get better visibility into errors so you can debug more quickly.

Ensure High Quality APIs by Writing and Running Test Suites

Write test suites so that teams can debug together

Create Test Suites

Write custom test suites in JavaScript in the Postman Sandbox for each request. Use Postman's PM APIto assert a set of predefined rules for better and cleaner tests.

No Code Necessary

Build and run test suites without having to write any code with Postman's built-in test scripts. Add onto them with assertions specific to your endpoint's expected response.

Run the Tests

Use the collection runner in the Postman app to test a collection and view the results in real time. Or use Newman to view test results in the terminal.

Why Postman?

It's Free and Easy to Start

Download the Postman app and send your first request within minutes. Postman is free to download and use for teams of any size.

Wide Support for all API Types and Schemas

Make any kind of API call—REST, SOAP, or just plain HTTP—and easily inspect even the largest responses. Postman also has built-in support for popular data formats, including OpenAPI, GraphQL, and RAML.

It's Extensible

Customize Postman for your needs with built-in integrations, the Postman API, and Newman, and integrate test suites into your preferred CI/CD service.

Support and Community

We continually make improvements and add new features based on feedback from our community of over 8 million users. Get help from Postman experts and your peers on the community forum.

Case Studies

SynapseFI relies on the Postman Sandbox to onboard consumers

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Yodlee uses Postman to manage all the data required to build an app

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Spotinst manages every aspect of API development in Postman

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Get Started Today

Join the millions of developers who are already developing their APIs faster and better with Postman

Download the App