What does this tool give you?
Describe your API in plain English and get an AI-generated starter OpenAPI spec, with 3 free AI prompts to iterate on it.
What does Postman Agent Mode give you?
Agent Mode creates specs in any protocol — OpenAPI, AsyncAPI, GraphQL, Proto, or Smithy — backed by visual and code editors, governance rules enforced automatically via CI/CD, spec-to-collection generation with two-way sync, Git-based team collaboration and version control, and 50 to 800 monthly AI credits depending on your plan.
How do I create an OpenAPI spec without writing YAML by hand?
Describe the API in plain English and the AI-generated starter spec gives you a working OpenAPI draft to refine, rather than writing YAML from scratch.
Can I generate specs in AsyncAPI, GraphQL, or Proto too, not just OpenAPI?
Yes — Agent Mode creates specs in OpenAPI, AsyncAPI, GraphQL, Proto, or Smithy, not just OpenAPI.
Is there a free way to generate an OpenAPI spec online?
Yes — this tool gives 3 free AI prompts to generate and iterate on a starter spec with no signup.