Enum PrimitiveSchemaDefinition 

#[non_exhaustive]
pub enum PrimitiveSchemaDefinition {
    Enum(EnumSchema),
    String(StringSchema),
    Number(NumberSchema),
    Integer(IntegerSchema),
    Boolean(BooleanSchema),
}

Available on crate features mcp and tools only.

Primitive schema definition for elicitation properties.

According to MCP 2025-06-18 specification, elicitation schemas must have properties of primitive types only (string, number, integer, boolean, enum).

Note: Put Enum as the first variant to avoid ambiguity during deserialization. This is due to the fact that EnumSchema can contain StringSchema internally and serde uses first match wins strategy when deserializing untagged enums.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Enum(EnumSchema)

Enum property (explicit enum schema)

String(StringSchema)

String property (with optional enum constraint)

Number(NumberSchema)

Number property (with optional enum constraint)

Integer(IntegerSchema)

Integer property (with optional enum constraint)

Boolean(BooleanSchema)

Boolean property

Trait Implementations

impl Clone for PrimitiveSchemaDefinition

fn clone(&self) -> PrimitiveSchemaDefinition

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PrimitiveSchemaDefinition

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PrimitiveSchemaDefinition

fn deserialize<__D>( __deserializer: __D, ) -> Result<PrimitiveSchemaDefinition, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for PrimitiveSchemaDefinition

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for PrimitiveSchemaDefinition

fn eq(&self, other: &PrimitiveSchemaDefinition) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for PrimitiveSchemaDefinition

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PrimitiveSchemaDefinition