Struct ToolDefinition 

pub struct ToolDefinition {
    pub name: String,
    pub description: String,
    pub parameters: JsonSchema,
    pub retry: Option<ToolRetryConfig>,
}

A tool the model can invoke during generation.

Providers translate this into their native tool format.

Fields

name: String

The tool’s name, used to match ToolCall::name.

description: String

Human-readable description shown to the model so it knows when to use this tool.

parameters: JsonSchema

JSON Schema describing the tool’s expected input.

retry: Option<ToolRetryConfig>

Optional retry configuration for this tool.

When present, failed tool executions will be automatically retried with exponential backoff. This is a runtime-only setting — it is not serialized (skipped during serde) because it’s not part of the tool schema sent to the LLM.

Trait Implementations

impl Clone for ToolDefinition

fn clone(&self) -> ToolDefinition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolDefinition

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ToolDefinition

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ToolDefinition

fn eq(&self, other: &ToolDefinition) -> 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 ToolDefinition

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ToolDefinition