What are the important limits?

Not a full OpenAPI validator or interactive API client. YAML, remote references and schema resolution are not supported; $ref values remain visible. Path and operation parameters are shown together, so review overrides. Up to 5,000 operations and 5 MB.

Where is my information stored?

Processing happens in your browser. These workspaces do not upload your inputs or send reports to a server. Session data is not automatically saved; download a project or report before closing. Keep sensitive exports private.

OpenAPI Specification Explorer

Explore API endpoints, methods, tags, parameters and responses from a local OpenAPI 3.x JSON document.

Local Developer Workbench

OpenAPI · Endpoint Explorer

Files are processed in this browser. No requests are sent to your endpoints.

OpenAPI JSON

{
  "openapi": "3.1.0",
  "info": {
    "title": "Inventory API",
    "version": "1.0"
  },
  "servers": [
    {
      "url": "https://example.com/api"
    }
  ],
  "paths": {
    "/items": {
      "get": {
        "summary": "List inventory",
        "tags": [
          "Items"
        ],
        "parameters": [
          {
            "name": "limit",
            "in": "query",
            "schema": {
              "type": "integer",
              "default": 20
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Inventory list"
          }
        }
      },
      "post": {
        "summary": "Create an item",
        "tags": [
          "Items"
        ],
        "requestBody": {
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "name": {
                    "type": "string"
                  }
                }
              }
            }
          }
        },
        "responses": {
          "201": {
            "description": "Created"
          }
        }
      }
    }
  }
}

Inventory API OpenAPI 3.1.0 · 2 operations

GET /items

{
  "summary": "List inventory",
  "tags": [
    "Items"
  ],
  "parameters": [
    {
      "name": "limit",
      "in": "query",
      "schema": {
        "type": "integer",
        "default": 20
      }
    }
  ],
  "responses": {
    "200": {
      "description": "Inventory list"
    }
  }
}

Servers & Global Security Requirements

{
  "servers": [
    {
      "url": "https://example.com/api"
    }
  ],
  "security": []
}

Explorer, not a full specification validator. JSON input only; no YAML or remote references are fetched. $ref values remain references. Path-level and operation-level parameters are shown together; review overrides in your API tooling. No authentication or API calls are performed.

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What Is the OpenAPI Specification Explorer?

Browse operations from an OpenAPI document without running an API or uploading its specification. Search paths, tags and descriptions; filter by HTTP method; inspect request bodies, responses, parameters, servers and global security requirements.

How It Works

Open an OpenAPI 3.x JSON file. Select an endpoint to inspect its operation object and combined parameter list. Export the selected operation as JSON/PDF or the filtered endpoint catalog as CSV/PDF. The example inventory API is fictional and is never contacted.

When to Use It

Use when inspecting local developer data or preparing configuration that needs review before production.

Frequently Asked Questions

How do I get started?: Open an OpenAPI 3.x JSON file. Select an endpoint to inspect its operation object and combined parameter list. Export the selected operation as JSON/PDF or the filtered endpoint catalog as CSV/PDF. The example inventory API is fictional and is never contacted.
What are the important limits?: Not a full OpenAPI validator or interactive API client. YAML, remote references and schema resolution are not supported; $ref values remain visible. Path and operation parameters are shown together, so review overrides. Up to 5,000 operations and 5 MB.
Where is my information stored?: Processing happens in your browser. These workspaces do not upload your inputs or send reports to a server. Session data is not automatically saved; download a project or report before closing. Keep sensitive exports private.

Found an issue? Send Feedback. See our data sources and update policy for tools that depend on changing information.

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{ "summary": "List inventory", "tags": [ "Items" ], "parameters": [ { "name": "limit", "in": "query", "schema": { "type": "integer", "default": 20 } } ], "responses": { "200": { "description": "Inventory list" } } }