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API Schema and OpenAPI Specs Generator

Automatically drafts detailed OpenAPI (Swagger) specifications or JSON schemas based on raw endpoint responses or requirements.

Use Case

Use when designing APIs or when you need to quickly document existing endpoints for front-end developers or external clients.
AI Prompt
Act as an API Architect. Generate an OpenAPI 3.0 specification in YAML format for the following API endpoint requirements or sample JSON payload: [insert JSON payload or API requirements here]. Ensure you include precise parameter validation, correct HTTP status codes (200, 201, 400, 401, 500), schema objects, authorization headers, and clean endpoint descriptions.

How to Use

  1. 1Provide raw JSON payload or text requirements.
  2. 2Execute the prompt.
  3. 3Copy-paste the generated YAML directly into Swagger Editor or your documentation generator.

Example Output

I have constructed a comprehensive OpenAPI 3.0 document in YAML. It defines a POST route for user registration, including schema requirements for username and password fields with regex-based length validations. It also defines responses for successfully created accounts and missing parameter errors.