schemars/docs/examples/8-enum_repr.md

layout	title	parent	nav_order	summary
default	Serialize Enum as Number (serde_repr)	Examples	8	Generating a schema for with a C-like enum compatible with serde_repr.

Serialize Enum as Number (serde_repr Compatibility)

If you use the #[repr(...)] attribute on an enum to give it a C-like representation, then you may also want to use the serde_repr crate to serialize the enum values as numbers. In this case, you should use the corresponding JsonSchema_repr derive to ensure the schema for your type reflects how serde formats your type.

{% include example.md name="enum_repr" %}