API & OpenAPI utility

OpenAPI Security Checker

Review declared security requirements, unused schemes, and HTTP server URLs.

● This tool runs entirely in your browser. Your input is never uploaded to our servers.

OpenAPI YAML or JSON

Output

Your result will appear here…

How to use OpenAPI Security Checker

Paste an OpenAPI document with paths and security configuration.
Select Check Security to inspect declared schemes and operations.
Treat findings as a review aid, not a security audit or penetration test.

Example

Input:

openapi: 3.0.3
info:
  title: Example API
  version: 1.0.0
servers:
  - url: https://api.example.com
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
security:
  - bearerAuth: []
paths:
  /users:
    get:
      responses:
        '200':
          description: OK

Output:

GET /users has no declared security requirement.
Unused security scheme: bearerAuth

Use cases

Find operations with no declared authentication requirement.
Spot security schemes that are never referenced.
Review server URLs that use plain HTTP.

About this tool

Review declared security requirements, unused schemes, and HTTP server URLs. Processing happens locally in your browser, so your input is not sent to a server or included in analytics.

Frequently asked questions

Does this verify authentication works?

No. It inspects documentation declarations only and does not send requests or verify authorization behavior.