Free API Security Testing
Limited free (Freemium) usage of the 42Crunch API security testing tools
Our API testing tools are available to users who have installed our IDE OpenAPI Editor extension and registered with us. Registration is free and only requires an email address. Registration is required so we can send you a freemium token that activates your free account. Once registered you can run 100 operation audits and 100 operation scans each month for free. Users with greater usage requirements can upgrade to a paid single-user or team subscription.
Free API security Testing Account
Join millions of other IDE users using our tools.
- Audit your OpenAPI contracts for quality, conformance and security
- Scan your APIs for conformance and security vulnerabilities
- It's free
- Monthly free allowance
- Upgrade options are available if required
Register for Freemium
Requirements to use Freemium
- Step 1: Register for freemium
- Step 2: Download the 42Crunch OpenAPI Editor extension in VS Code, JetBrains e.g. Intellij or Eclipse IDEs
- Step 3: Add the token you receive by email on registration to the 42Crunch OpenAPI editor extension settings (click on the 42c logo on the bottom right of the extension).
Bingo, you’re all set - once the token has been added then your allowances will appear immediately.
You can check out our Freemium FAQ page for more information.
Freemium Usage Limitations
Once you have registered for the freemium service you get 100 API operation audits and 100 operation scans per month in the IDE. An "operation" audit or scan is recognised as a Path + HTTP Method.
Free API Security Testing
API Audit and API Scan are two core API security testing tools from 42Crunch. You can access these tools within the free 42Crunch OpenAPI editor available in VS code, IntelliJ and Eclipse IDEs.
API Audit performs over 300 checks on your OpenAPI definition to ensure the quality of your API design. It checks for security vulnerabilities and conformance to the OpenAPI specification.
API Scan dynamically tests the API to ensure conformance of the design and ensure it is free from security vulnerabilities.


Free creation and editing of OpenAPI files
No registration is required to use the OpenAPI editor extension and no limits apply to create and edit OpenAPI definition files directly in the IDE. Enjoy features such as Quick fixes, Try it (test live endpoints) and Preview features and supports OpenAPI definition files in JSON or YAML format. Limits and registration only apply when you wish to use the API security testing tools (API Audit and API Scan).
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