Struct ToolCallDescription 

pub struct ToolCallDescription {
    pub fields: ToolCallUpdateFields,
}

Self-description of a tool call, directly mapping to ACP’s ToolCallUpdateFields.

Purpose (the same data drives three ACP messages):

• First push of a ToolCall (status = Pending)
• The tool_call field in a RequestPermission request
• Baseline for incremental updates via ToolEvent::Progress

Field conventions:

• tool_call_id is not in this struct; it is assigned uniformly by the main loop (using the LLM’s tool_use_id or a self-generated UUID). The tool does not care about it.
• raw_input is filled by the main loop with the original args. Tool implementations must not set it themselves, to avoid divergence from the real parameters on the wire.
• status is inferred from the ToolEvent variant: Progress → InProgress, Completed → Completed, Failed → Failed. Tools must not set it themselves.

Fields

fields: ToolCallUpdateFields

Trait Implementations

impl Clone for ToolCallDescription

fn clone(&self) -> ToolCallDescription

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolCallDescription

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

Formats the value using the given formatter.