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API OpenAPI Specification Generator
Translates raw backend code or JSON payloads into fully compliant OpenAPI 3.0 specs.
Use Case
Use this prompt when you need to document your REST API endpoints for frontend developers, external partners, or documentation systems.
AI Prompt
You are a backend architect. Convert the following [insert JSON payload or raw controller code] into a valid, production-ready OpenAPI 3.0 specification in [insert YAML or JSON] format. Ensure that all schema definitions, paths, query parameters, headers, and standard response codes (200, 400, 401, 500) are accurately documented.
How to Use
- 1Provide your raw server-side handler code, route controller, or sample request-response JSON data.
- 2Choose whether you want the output in YAML or JSON format.
- 3Run the prompt, then copy-paste the output directly into Swagger Editor or your API documentation tool.
Example Output
The resulting openapi specification is formatted in clean YAML. It defines a post endpoint under the users path with a description of creating a new user profile. The request body section specifies required fields such as email and password with string format constraints. Responses include a success code returns the user object with its assigned unique identifier, and a bad request code returns an error message string.
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