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Model Validation#

Huma includes a utility to make it a little easier to validate models outside of the normal HTTP request/response flow, for example on app startup to load example or default data and verify it is correct. This is just a thin wrapper around the built-in validation functionality, but abstracts away some of the boilerplate required for efficient operation and provides a simple API.

type MyExample struct {
	Name string `json:"name" maxLength:"5"`
	Age int `json:"age" minimum:"25"`

var value any
json.Unmarshal([]byte(`{"name": "abcdefg", "age": 1}`), &value)

validator := huma.ModelValidator()
errs := validator.Validate(reflect.TypeOf(MyExample{}), value)
if errs != nil {
	fmt.Println("Validation error", errs)


The huma.ModelValidator is not goroutine-safe! For more flexible validation, use the huma.Validate function directly and provide your own registry, path buffer, validation result struct, etc.

Dive Deeper#