Specifications documentation
Read up on how to design and enforce API specifications on Postman.
READ DOCS →Design, standardize, and govern API specifications on one secure platform with multi-format design, built-in governance, and AI that knows your standards.
Design REST, event-driven, GraphQL, gRPC, and Smithy APIs in one place.
Edit specs with visual outlines or code views using familiar Postman workflows.
Set up governance rules, get a real-time view into API compliance with API Catalog, and automatically enforce standards with Postman CLI.
Postman AI generates spec scaffolds, applies your governance rules, and writes endpoint descriptions, so your team goes from just getting started to a compliant API spec in minutes.

Spec Hub allows us to consolidate our entire API workflow, from design to testing and documentation, into a single, seamless platform.
Read up on how to design and enforce API specifications on Postman.
READ DOCS →Learn how Postman's all-in-one platform helps teams modernize API governance without sacrificing speed or security.
WATCH ON DEMAND →Get an overview of Postman's API design and governance solution.
GET ONE-PAGER →Chat with a Postman expert to learn how Spec Hub can help your organization enforce API design standards at scale, without slowing developers down.