Struct ToolCallPart 

pub struct ToolCallPart {
    pub tool_call_id: String,
    pub tool_name: String,
    pub input: String,
    pub provider_executed: Option<bool>,
    pub dynamic: Option<bool>,
    pub provider_metadata: Option<HashMap<String, HashMap<String, JsonValue>>>,
}

A request from the language model to invoke an external tool or function.

When a model detects that it needs to call a tool to accomplish a task, it emits a tool call with the tool name and arguments. The application is responsible for executing the tool and returning the results via a ToolResultPart.

Fields

• tool_call_id - Unique identifier for correlating this call with its result
• tool_name - Name of the tool to invoke (must match a provided tool definition)
• input - Stringified JSON containing the tool arguments
• provider_executed - If true, the provider automatically executed the tool
• dynamic - If true, indicates a dynamic or runtime-generated tool call
• provider_metadata - Optional provider-specific details

Processing Tool Calls

When you receive a tool call, you should:

1. Extract the tool name and arguments
2. Locate the corresponding tool definition
3. Execute the tool with the provided arguments
4. Return a ToolResultPart with the results

Fields

tool_call_id: String

Unique identifier that correlates this tool call with its result

tool_name: String

Name identifying which tool should be invoked

input: String

Stringified JSON containing the arguments for the tool

provider_executed: Option<bool>

Indicates whether the provider has already executed this tool

dynamic: Option<bool>

Indicates whether this is a dynamic or runtime-generated tool call

provider_metadata: Option<HashMap<String, HashMap<String, JsonValue>>>

Optional provider-specific metadata about the tool call

Trait Implementations

impl Clone for ToolCallPart

fn clone(&self) -> ToolCallPart

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolCallPart

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ToolCallPart

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ToolCallPart

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ToolCallPart

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 ToolCallPart