Struct ToolChoice 

pub struct ToolChoice {
    pub mode: ToolChoiceMode,
}

Tool choice configuration for sampling (MCP 2025-11-25)

Fields

mode: ToolChoiceMode

How the model should use tools

Implementations

impl ToolChoice

pub fn auto() -> Self

Create auto tool choice (model decides when to use tools)

pub fn required() -> Self

Create required tool choice (model must use a tool)

pub fn none() -> Self

Create none tool choice (model should not use tools)

Trait Implementations

impl Clone for ToolChoice

fn clone(&self) -> ToolChoice

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolChoice

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

Formats the value using the given formatter.

impl Default for ToolChoice

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ToolChoice

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ToolChoice

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

where __S: Serializer,

Serialize this value into the given Serde serializer.