Enum ToolDecision 

pub enum ToolDecision {
    Proceed,
    Block(String),
    Modify(Value),
}

Decision returned by ToolPolicy::before_call to control tool execution.

This extends the simple Ok/Err model with the ability to modify tool arguments before execution — enabling hooks that auto-inject flags, rewrite paths, or sanitize inputs without blocking the call.

Variants

Proceed

Proceed with the original arguments.

Block(String)

Block the tool call entirely. The string is surfaced to the LLM as an error message so it can correct its approach.

Modify(Value)

Proceed, but replace the tool’s arguments with the provided value. The tool executes as if the LLM had sent modified_args originally.

Trait Implementations

impl Clone for ToolDecision

fn clone(&self) -> ToolDecision

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolDecision

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

Formats the value using the given formatter.