Struct ToolChoice 

pub struct ToolChoice {
    pub mode: Option<ToolChoiceMode>,
}

👎Deprecated:

Deprecated as of protocol version 2026-07-28 (SEP-2577). Remains in the specification for at least twelve months; see the deprecated features registry.

Controls tool selection behavior for sampling requests.

Fields

mode: Option<ToolChoiceMode>

👎Deprecated:

Deprecated as of protocol version 2026-07-28 (SEP-2577). Remains in the specification for at least twelve months; see the deprecated features registry.

Controls the tool use ability of the model:

• "auto": Model decides whether to use tools (default)
• "required": Model MUST use at least one tool before completing
• "none": Model MUST NOT use any 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<(), Error>

Formats the value using the given formatter.

impl Default for ToolChoice

fn default() -> ToolChoice

Returns the “default value” for a type.

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

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ToolChoice

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ToolChoice

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 ToolChoice