datamodel-code-generator

April 16, 2026

Version updated for https://github.com/koxudaxi/datamodel-code-generator to version 0.56.1.

This action is used across all versions by 2,921 repositories.

Action Type

This is a Composite action.

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Action Summary

The datamodel-code-generator GitHub Action automates the generation of Python data models from various schema definitions, including OpenAPI 3, JSON Schema, GraphQL, and raw data formats like JSON, YAML, or CSV. It simplifies the creation of type-safe, validated Python code for use with Pydantic, dataclasses, TypedDict, and related frameworks, supporting complex schemas with features like references, inheritance, and enums. This tool is ideal for streamlining development workflows by reducing manual coding and ensuring compatibility with type checkers and IDEs.

What’s Changed

Fix --base-class-map and --enum-field-as-literal-map long inline json support by @ilovelinux in https://github.com/koxudaxi/datamodel-code-generator/pull/3075
Prefer CLI input over pyproject url by @koxudaxi in https://github.com/koxudaxi/datamodel-code-generator/pull/3083
Fix relative URL refs with path-only root ids by @koxudaxi in https://github.com/koxudaxi/datamodel-code-generator/pull/3085
tomli was merged under the name tomllib into std library 3.11 by @a-detiste in https://github.com/koxudaxi/datamodel-code-generator/pull/3088
Fix root model reuse collapse by @koxudaxi in https://github.com/koxudaxi/datamodel-code-generator/pull/3089
Docs: describe –keep-model-order as deterministic dependency-aware ordering by @koxudaxi in https://github.com/koxudaxi/datamodel-code-generator/pull/3090

New Contributors

@a-detiste made their first contribution in https://github.com/koxudaxi/datamodel-code-generator/pull/3088

Full Changelog: https://github.com/koxudaxi/datamodel-code-generator/compare/0.56.0...0.56.1