OpenAPI Designer

SE v1.0.0May 17, 2026

Design and edit API specifications without leaving the app.

  • Visual project editor plus raw YAML, kept in bi-directional sync — edit either side, the other updates
  • Supports Swagger 2.0, OpenAPI 3.0, 3.1, and 3.2, with conversion between versions
  • Schema composition: allOf, oneOf, anyOf, not
  • Try It Out preview with auth, environments, and assertion-aware responses
  • Conflict resolution when both sides change (source-wins, target-wins, deep-merge, or ask)
  • x-atrahasis-* extensions preserved through import / export / sync