Enum ToolError 

pub enum ToolError {
    Respond(String),
    Fatal(String),
}

How a tool call failed, split into exactly two recovery paths (ADR-0004).

Default everything to ToolError::Respond. Bad arguments, an unknown tool, a not-found path, a failed command, a timeout — all are soft: they become a tool_result { is_error: true } the model reads and retries from. ToolError::Fatal is reserved for the rare case where the transcript itself is unrecoverable; it aborts the turn with a non-zero exit.

Variants

Respond(String)

Soft error: surfaced to the model as an is_error tool result so it can self-correct. The loop keeps iterating.

Fatal(String)

Hard error: the transcript is unrecoverable; abort the turn.

Trait Implementations

impl Debug for ToolError

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

Formats the value using the given formatter.

impl Display for ToolError

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

Formats the value using the given formatter.

impl Error for ToolError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.