Module tools 

Built-in tools (calculator, web search). Built-in Tools for Agent Capabilities

This module provides the tool infrastructure that enables agents to perform actions beyond text generation, such as calculations and web searches.

Module Structure

• calculator - Mathematical expression evaluation
• search - Web search integration (DuckDuckGo, Brave, etc.)
• registry - Tool registration and discovery

Available Tools

Calculator

Evaluates mathematical expressions safely:

let result = calculator::evaluate("2 + 2 * 3")?;  // Returns 8

Web Search

Searches the web and returns relevant results:

let results = search::web_search("rust programming", 5).await?;
for result in results {
    println!("{}: {}", result.title, result.url);
}

Tool Registry

The registry module manages tool discovery and execution:

let registry = ToolRegistry::default();
let tools = registry.list_tools();  // Get available tool schemas
let result = registry.execute("calculator", json!({"expr": "2+2"})).await?;

MCP Integration

Tools can also be provided via MCP (Model Context Protocol) servers. See the mcp module for external tool integration.

Modules

calculator

Calculator tool for arithmetic operations.

mcp_bridgemcp

MCP→ToolRegistry bridge: registers MCP client operations as agent-callable tools. MCP→ToolRegistry bridge.

registry

Tool registry for managing available tools.