Coding and developer tools

Free OpenAPI Specification Generator.

OpenAPI draft with unresolved contracts flagged.

Draft an API description from the contract you provide and inspect the missing behaviors before generating clients or publishing documentation.

Chrome extension + account required.
25 free automation tasks/month across tools. Browser-provider limits apply.

WHAT TO HAVE READY

Verified endpoint descriptions and example responses.

YOUR STARTING POINT

A task you can make yours.

Copy it here. Paste it into WebAct when you are ready.

This page prepares your prompt. The task runs in WebAct.

01

Make the task yours.

Review the prompt above. Add your goal and any requirements that matter.

02

Bring it to WebAct.

Open WebAct, paste the task and provide your source material. Start in Chat for a draft or explanation; use Task when you want an approved browser action or file.

03

Check the useful part.

Check formulas, code and calculations against known inputs in the appropriate runtime. Review actions before execution and keep the original data available.

A PRACTICAL GUIDE

How to use the OpenAPI Specification Generator.

An API specification should reflect the actual contract, including errors and authentication. Mark unknown behavior instead of inventing a polished endpoint description.

Make the workflow fit your task.

Document the actual endpoint, parameters, authentication and response contract using a specified OpenAPI version. Include known errors and mark unknown behavior rather than creating a complete-looking contract from assumptions.

What you provide
Verified endpoint descriptions and example responses.
What you get
OpenAPI draft with unresolved contracts flagged.

See the input and the result.

Illustrative input and output · a teaching example, not a live WebAct run

Example input

Produce an OpenAPI 3.1.1 JSON fragment for fictional GET /items. Confirmed response: status 200, application/json array, each item requires string id and name. Authentication and errors are not specified.

Completed example

{
  "openapi": "3.1.1",
  "info": {"title": "Illustrative Items API", "version": "0.1.0"},
  "paths": {
    "/items": {
      "get": {
        "description": "Draft: authentication and error responses remain unspecified.",
        "responses": {
          "200": {
            "description": "Items",
            "content": {"application/json": {"schema": {
              "type": "array",
              "items": {"type": "object", "required": ["id", "name"], "properties": {
                "id": {"type": "string"}, "name": {"type": "string"}
              }}
            }}}
          }
        }
      }
    }
  }
}
Download this example

Load this input into the prompt, then copy it to WebAct to try the task. Your result may differ from the illustration.

Decisions and troubleshooting.

Should an OpenAPI draft invent authentication for an undocumented endpoint?

Record the gap and request the actual requirement. A generated security scheme must not be mistaken for implemented protection.

Why do generated clients fail despite a valid specification document?

Compare schemas and status behavior with the real API. Structural validity does not establish that the documented contract matches implementation.

Reference for this workflow.

Try it with your own source.

Replace the example with your material in the task prompt. Keep the requirements you need, then copy the task into WebAct.

Customize and copy the task ↑
BEFORE YOU BEGIN

Using WebAct.

The prompt and example are available here. Run your task in the WebAct Chrome extension.

Is this tool free?

You can copy and edit the prompt here for free. To use it with WebAct, install the Chrome extension, create and verify your account, and connect an available browser ChatGPT session. The Free plan includes 25 user-started automation tasks per calendar month, shared across tools. Ordinary browser Chat is separate; provider limits apply.

Learn about shared context in our privacy policy and choosing Chat or Task.

FROM A PROMPT TO YOUR OWN WORK

Bring the task to your page.

Install WebAct, add your source material and make the result yours.

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