Postman – API Development and Testing Platform

Overview

Postman is an API platform designed to assist developers and teams throughout the API lifecycle, from design and development to testing and deployment. Founded in 2014, Postman provides a comprehensive set of tools within a single interface, aiming to streamline API workflows and facilitate collaboration. It is commonly utilized by backend developers, frontend developers integrating with APIs, QA engineers, and technical writers documenting APIs.

The platform offers a graphical user interface (GUI) for sending HTTP requests, inspecting responses, and managing API collections. This approach can simplify the process of interacting with various API types, including REST, SOAP, and GraphQL. Developers can organize requests into collections, define environments for different configurations (e.g., development, staging, production), and write test scripts to validate API behavior. Postman's developer experience emphasizes ease of use, with features like environment variables and collection runners that allow for dynamic testing and repeated execution of requests.

Postman's utility extends beyond individual API interaction. It supports team collaboration by allowing shared workspaces, version control for API collections, and commenting on requests. This facilitates a centralized source of truth for API documentation and specifications, which can be crucial for distributed teams. The platform also includes features for API monitoring, allowing users to track API performance and availability, and API mocking, which enables frontend and mobile developers to build applications against simulated API responses before the actual backend is ready. For larger organizations, Postman offers enterprise-grade features for security, governance, and advanced administration.

The platform's scripting capabilities, primarily using JavaScript, enable developers to create complex test scenarios, perform data manipulation, and integrate with continuous integration/continuous delivery (CI/CD) pipelines. This extensibility allows for automated testing routines, which can be part of a broader testing strategy, as discussed in various software testing methodologies such as those advocated for web performance. Postman positions itself as a central hub for API operations, aiming to improve efficiency and consistency across an organization's API landscape.

Key features

• API Client: A GUI for sending HTTP, GraphQL, and gRPC requests and inspecting responses.
• API Design & Development: Tools for designing APIs from scratch, generating API documentation, and using schema definitions like OpenAPI.
• API Testing: Write automated tests with JavaScript, organize them into collections, and run them in sequences or as part of CI/CD pipelines.
• API Documentation: Generate and publish interactive documentation directly from API collections, including examples and usage instructions.
• Workspaces & Collaboration: Share API collections, environments, and mock servers with team members in shared workspaces with role-based access control.
• API Mocking: Create mock servers based on API schemas to simulate API responses, allowing parallel development of frontend and backend applications.
• API Monitoring: Monitor API performance, uptime, and response times from various geographic regions.
• Collection Runner: Execute multiple requests in a collection sequentially with configurable iterations and delays for data-driven testing.
• Environments: Manage different configurations (variables, authentication) for various stages of the API lifecycle (e.g., development, staging, production).
• Flows: A visual interface for creating API workflows, chaining requests, and automating multi-step processes without extensive coding as described in Postman's documentation.

Pricing

Postman offers a free tier for individuals and small teams, with paid plans providing additional users, features, and support. Pricing is typically per user, per month, with discounts for annual billing. This table reflects pricing as of May 2026.

For detailed and up-to-date pricing information, refer to the official Postman pricing page.

Common integrations

• GitHub: Integrate with GitHub for version control of API collections and specifications to manage API changes.
• Jenkins: Integrate Postman Collection Runner into Jenkins pipelines for automated API testing in CI/CD workflows.
• Newman: The command-line collection runner for Postman, enabling integration with various build systems and CI/CD tools.
• Slack: Receive notifications from Postman monitors and other activities directly in Slack channels.
• Datadog: Send Postman monitor data to Datadog for centralized observability and alerting.
• Jira: Create or link issues in Jira directly from Postman when encountering API bugs or issues.

Alternatives

• Insomnia: A desktop API client that focuses on speed and developer experience, offering capabilities for API design, testing, and debugging.
• Stoplight: An API design platform that emphasizes design-first principles, collaboration, and governance across the API lifecycle.
• Swagger UI: A tool for rendering OpenAPI specifications into interactive API documentation, allowing users to explore and interact with API endpoints directly from a browser.

Getting started

To begin using Postman for API testing and development, you typically start by creating a new request within a collection. The following example demonstrates how to create a simple GET request to a public API endpoint using JavaScript in Postman's pre-request script and test script sections.

// Pre-request Script (runs before the request is sent)
// This script sets a variable that can be used in the request URL or headers
pm.environment.set("base_url", "https://jsonplaceholder.typicode.com");

// Request configuration (e.g., set in the Postman GUI for a GET request)
// URL: {{base_url}}/posts/1
// Headers: (none for this example)

// Test Script (runs after the response is received)
pm.test("Status code is 200 OK", function () {
    pm.response.to.have.status(200);
});

pm.test("Response body contains a 'title' field", function () {
    const responseData = pm.response.json();
    pm.expect(responseData).to.have.property('title');
});

pm.test("Title is a string", function () {
    const responseData = pm.response.json();
    pm.expect(responseData.title).to.be.a('string');
});

In this example, the pre-request script defines a base_url environment variable. The request itself is configured in Postman's GUI to target {{base_url}}/posts/1. After the request executes, the test script runs, asserting that the response status is 200 OK, the response body contains a title property, and that property's value is a string. This demonstrates basic API interaction and automated validation within the Postman environment.