Open API Audit

Get instant security insights for your OpenAPI specification. Our free tool performs 200+ comprehensive checks to identify security vulnerabilities, validate compliance, and provide actionable recommendations to strengthen your API design and improve developer experience.

API Audit Tool

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What Our API Audit Tool Does

OpenAPI Specification Validation

Validates that your API follows the OpenAPI Specification (OAS) standards. Ensures proper structure, syntax, and compliance with the latest OpenAPI guidelines for maximum compatibility and documentation quality.

Security & Authentication Review

Analyzes your API's security definitions, authentication methods, and authorization protocols. Identifies potential security vulnerabilities and ensures your endpoints are properly protected with secure protocols.

Data Schema Quality Assessment

Evaluates the quality and robustness of your API's data schemas, parameters, and response models. Ensures strong type definitions, proper validation rules, and comprehensive documentation for better API reliability.

OpenAPI Best Practices

OpenAPI Best Practices

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Consistent Naming Conventions

Use consistent naming across all API elements. For paths, use kebab-case (e.g., /user-profile/get-settings). For schema/model names, use PascalCase (e.g., UserProfile). For properties, use snake_case (e.g., first_name, account_status).

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Operation IDs

Always include unique operationId values for each endpoint. These are crucial for code generation tools to create meaningful method names and for API documentation tools to provide clear references.

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Comprehensive Documentation

Document all query arguments, parameters, and schema objects with clear descriptions, including min/max values and defaults. This helps developers understand the API's capabilities and constraints.

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Response Code Clarity

Capture all operation success and error response codes, including details about the error response and why it may have happened. Clear response codes help developers handle different scenarios appropriately.

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Standardized Error Handling

Define a single error response schema to standardize error handling across operations. This reduces complexity for clients, as they only need to handle one error format, and ensures consistent error reporting.

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Schema Validation

Validate schemas to ensure they have appropriate constraints like maxLength and pattern for string properties. Proper validation prevents invalid data from being processed, enhancing security and data integrity.

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Consistent Pagination Patterns

Implement standardized pagination across your API using either cursor-based (recommended for large datasets) or offset-based approaches. Include optional filtering and sorting parameters.

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Complete Security Definitions

Ensure security definitions are complete with specified security schemes. This is crucial for protecting sensitive data and ensuring that only authorized users can access certain API functionalities.

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Rate Limiting

Define rate limits to prevent abuse and ensure fair usage. Consider using tools like API Management (APIM) or Web Application Firewall (WAF) to enforce these limits.

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API Versioning

Implement API versioning to manage changes and ensure backward compatibility. The most common practice is to include the version number in the URL path (e.g., /v1/resource) or in the request headers.

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Deprecation Policy

Clearly communicate deprecation policies and timelines for API changes. Provide advance notice and documentation to help users transition smoothly.

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Testing

Implement thorough testing, including unit tests and integration tests, to ensure API reliability. Automated testing can help catch issues early and improve the development process.

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Performance Optimization

Monitor and optimize API performance to ensure fast response times. Use performance monitoring tools to identify bottlenecks and optimize resource usage.

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Use Automated Tools

Regularly audit your APIs using a tool like Devunus to automatically identify potential security vulnerabilities and improve the overall developer experience.

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Regular Security Checks

Regularly check your API against the OWASP Top 10 API Security Risks to identify and mitigate potential vulnerabilities. Staying informed about common security threats helps maintain a secure API environment.

๐Ÿ”— Additional Resources

Stay updated with the latest API security best practices:

๐Ÿ›ก๏ธOWASP API Security Top 10

Build your Software Catalog

Your Software Catalog is your central dashboard for discovering, monitoring and securing all your software components and dependencies. By adding your websites to the catalog, Devunus will keep an eye on them with continuous monitoring.

  • Components and dependencies
  • Security and compliance tracking
  • Component health scores
  • Version and dependency tracking
  • Documentation
Software Registry Dashboard