Procedural macro for deriving BaseTool implementations from functions.

Example

use lc_tools::{tool, BaseTool, Tool, ToolError};

#[tool(description = "Useful for arithmetic calculations")]
fn calculator(
    #[param(desc = "The mathematical expression to evaluate")]
    expression: String,
) -> Result<f64, ToolError> {
    expression
        .parse::<f64>()
        .map_err(|e| ToolError::ExecutionFailed(e.to_string()))
}

This expands to:

• CalculatorTool struct
• CalculatorInput struct with Deserialize + JsonSchema
• impl BaseTool for CalculatorTool
• impl Tool for CalculatorTool
• The original calculator function is preserved