Struct Tool 

pub struct Tool {
    pub tool_type: String,
    pub function: ToolFunction,
}

A tool definition for LLM function calling.

Tools allow LLMs to perform actions by calling functions with structured parameters. Define tools with JSON Schema for the parameters.

Example

use limit_llm::{Tool, ToolFunction};
use serde_json::json;

let tool = Tool {
    tool_type: "function".to_string(),
    function: ToolFunction {
        name: "get_weather".to_string(),
        description: "Get current weather for a location".to_string(),
        parameters: json!({
            "type": "object",
            "properties": {
                "location": {
                    "type": "string",
                    "description": "City name"
                }
            },
            "required": ["location"]
        }),
    },
};

Fields

tool_type: String

The type of tool (always “function” for now).

function: ToolFunction

The function definition.

Trait Implementations

impl Clone for Tool

fn clone(&self) -> Tool

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Tool

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Tool

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Tool

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

where __S: Serializer,

Serialize this value into the given Serde serializer.