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API Security Testing via Postman

Run safe, passive security tests on your Postman collections to detect authentication gaps, data leaks, and design-level flaws. No attack payloads, no traffic replay, no production risk—tests typically complete in about 2–3 minutes.

When to use

  • You store and test your APIs in Postman and want to check them for security issues.

  • You want to ask in natural language (e.g., "test my collection") and get immediate results with recommendations directly in Postman's AI mode—no separate tools or workflows.

What it finds

API Security Testing looks for issues such as:

  • API key and secret leaks

  • Missing or weak authentication

  • Over-permissive endpoints

  • Schema violations and drift

  • Sensitive data exposure

  • Basic BOLA / BOPLA indicators

Findings are summarized with explanations and remediation guidance, designed for developers rather than security specialists. For the full list of issue types that can be detected (including those found by ASTP), see Vulnerability types.

API Security Testing via Postman vs Schema-Based Testing (Postman)

Wallarm also offers Schema-Based Testing, which can use your Postman collection to run dynamic security tests (typically via Docker in CI/CD). Both options can use your Postman collections; choose based on how you work and how deep you need to go:

API Security Testing via Postman Schema-Based Testing (Postman collection)
Use when You want a quick, conversational check inside Postman—ask in natural language and get results in the Agent chat in a few minutes. You want automated, comprehensive DAST in CI/CD; you already have functional tests in Postman and want them to drive security tests.
How it runs Passive, design-level analysis; no attack payloads, no traffic replay. Dynamic testing: sends real requests, uses your collection's functional tests as a blueprint to generate and run security tests.
Depth Auth gaps, data leaks, over-permissive endpoints, schema issues, basic BOLA/BOPLA—summarized for developers. OWASP API Top 10, business logic, access control, input validation (injections, RCE, etc.), environment misconfigurations.
Where Inside Postman (Agent Mode); results in chat and in Wallarm Cloud. Docker-based; runs in your pipeline or locally; results in Wallarm Console (Test runs, Security Issues).

In short: use API Security Testing via Postman for fast, in-Postman checks with minimal setup; use Schema-Based Testing with a Postman collection when you need full DAST and pipeline integration.

Access via Postman

You can access API Security Testing via Wallarm Rogue MCP (Wallarm's MCP server), which is easily accessible via Postman. Security checks run conversationally inside Postman Agent Mode—no separate tools, proxies, or extra configuration. Scenario:

  1. In Postman, you add the Wallarm Rogue MCP server to your Workspace.

  2. With Postman's AI Agent, you ask in natural language to test your collection (e.g., "Please, test the collection for security issues with Wallarm.").

  3. The Agent runs the tests (about 2–3 minutes) and responds with a report covering:

    • What security issues were found in your APIs
    • How to fix them

  4. Test results are also sent to Wallarm Cloud.

To get started, proceed to Setup.

Other tools

Besides API Security Testing via Postman, Wallarm Rogue MCP provides other tools, such as Rogue MCP Inspection—auditing local MCP servers for supply-chain risks and excessive privileges.