API & OpenAPI utility

OpenAPI Response Viewer

Summarize response status codes, descriptions, and content types per operation.

● 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 Response Viewer

Paste an OpenAPI specification with operation responses.
Select List Responses to summarize status codes and content types.
Open the source document to inspect detailed response schemas.

Example

Input:

openapi: 3.0.3
info:
  title: Example API
  version: 1.0.0
paths:
  /users:
    get:
      responses:
        '200':
          description: User list
          content:
            application/json:
              schema:
                type: array
        '401':
          description: Unauthorized

Output:

GET /users — 200: User list (content: application/json)
GET /users — 401: Unauthorized

Use cases

Review response status coverage.
Inventory media types returned by operations.
Prepare a compact response summary for API review.

About this tool

Summarize response status codes, descriptions, and content types per operation. Processing happens locally in your browser, so your input is not sent to a server or included in analytics.

Frequently asked questions

Does this display full response schemas?

No. It summarizes status, description, and content types; use the schema viewer and original document for schema details.