Module tools 

Tool abstractions for agent function calling.

Provides base traits and types for tool integration:

• BaseTool: String-based tool interface (object-safe)
• Tool: Type-safe generic tool interface
• ToolDefinition: LLM function calling definition
• ToolRegistry: Tool collection and lookup

Structs

FunctionCall

Function call inside a ToolCall

FunctionDefinition

Function definition inside a tool

StructuredOutput

Wrapper for parsing structured JSON output from LLM responses.

StructuredTool

Structured tool wrapper.

ToolCall

Tool call from LLM response

ToolCallBuilder

Builder for constructing a ToolCall field by field.

ToolCallResult

Tool call result to send back to LLM

ToolDefinition

Tool definition for LLM function calling

ToolRegistry

Tool registry for storing and managing multiple tool instances.

Enums

ToolError

Tool error type.

Traits

BaseTool

Base tool trait (object-safe version).

Tool

Generic tool trait (type-safe version).

Functions

to_tool_definition

Converts BaseTool to ToolDefinition (for function calling).