API & OpenAPI utility

OpenAPI Tag Index

Group operations by their OpenAPI tags and show each tag's description.

● 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 Tag Index

Paste an OpenAPI document with path operations.
Select List Tags to group operations by their declared tags.
Review untagged operations and descriptions in the source document.

Example

Input:

openapi: 3.0.3
info:
  title: Example API
  version: 1.0.0
tags:
  - name: users
    description: User management
paths:
  /users:
    get:
      tags: [users]
      responses:
        '200':
          description: OK

Output:

users — User management
  GET /users

Use cases

Browse a large API by resource area.
Review which operations belong to each tag.
Find operations without tag assignments.

About this tool

Group operations by their OpenAPI tags and show each tag's description. Processing happens locally in your browser, so your input is not sent to a server or included in analytics.

Frequently asked questions

Does this duplicate an endpoint list?

It groups operations by tag and includes tag descriptions, rather than returning one flat operation list.