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OpenAPI 3.0 Schema Builder

Build valid OpenAPI 3.0 schema snippets for request bodies, responses, and components. Add fields with types, required/nullable flags, and export as YAML or JSON.

✓ Object field builder ✓ Required & nullable flags ✓ YAML & JSON output ✓ Copy & download

Schema Config

Properties

Each property maps to an OpenAPI schema field under properties:.

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