OhAPI Designer is a native macOS editor dedicated to OpenAPI (Swagger) specifications
OhAPI Designer is a native macOS editor dedicated to OpenAPI (Swagger) specifications. Write OpenAPI 3.0 / 3.1 files in JSON or YAML with context-aware completion, clear validation, and navigation tools designed for API work.
An editor made for OpenAPI
• JSON/YAML syntax highlighting, indentation guides, auto-indent
• Breadcrumbs to stay oriented in deeply nested specs
• Light & Dark mode
Xcode-style completion and snippets
• Ctrl+Space: suggestions based on cursor context in the OpenAPI schema
• Snippets with ghost text and Tab to accept
• Navigable placeholders with Tab / Shift-Tab to fill missing values quickly
Validate and navigate faster
• Inline validation (underlines + tooltips)
• Quick navigation with Cmd-click on $ref
Properties Panel + Schema Viewer
• Operations list (method/path/summary)
• Detailed view: description, parameters, request body, responses
• Schema tab: explore schemas as a tree, with Referenced / Resolved modes
Instant examples
• View examples defined in the spec
• Example generator when none are provided, with a Copy button
OhAPI Designer is for API developers, architects, and technical writers who want a fast, native OpenAPI-focused experience on macOS.