openapi-generator

You can generate an OpenAPI 3.1.0 specification from immutable data models by running the Python generator script. It automatically translates your model definitions, entities, and events into a complete API surface with schemas and endpoints.

CQRS API generation maps events to commands and resources to queries based on your model definitions. This translates event-driven patterns into a structured OpenAPI specification, ensuring clear separation between command endpoints and state-aggregation query endpoints.

Yes, automated OpenAPI generation includes Idempotency-Key handling for commands and RFC 7807 compliant error responses. The template-driven output automatically embeds these definitions into your API specification.

You need a Python environment with the pyyaml and jsonschema dependencies installed. Provide your immutable data models in JSON format, then execute the generator script with your project name to produce the OpenAPI output.

The best way to align your API surface with CQRS and event-driven patterns is to auto-generate specifications directly from immutable models. This ensures consistent resource-to-query and event-to-command mappings without manually writing OpenAPI YAML.

You should avoid automated OpenAPI generation if your data models are not immutable or lack structured entity and event classifications. The generator relies on strict model definitions to accurately produce CQRS-aligned endpoints and schema mappings.