Enum ToolError 

pub enum ToolError {
    Denied {
        reason: String,
    },
    NotFound {
        name: String,
    },
    Budget,
    Generation,
    Exec(Error),
    Other(Error),
}

Why a dispatch or a tool invocation failed.

The first three variants (Denied, Budget, Generation) are leash outcomes: the crate::Gate refused to mint a crate::ToolContext, so the tool never ran. NotFound is a registry miss. Exec and Other are failures from inside a tool that did pass the leash.

Variants

Denied

The requested authority is not within (or below) the granted caveats — the tool’s required ⊑ granted check failed, or a per-operation leash check (check_exec, check_path_*, check_net) denied the operation.

Fields

reason: String

Human-readable reason (safe to surface to the agent).

NotFound

No tool registered under the requested name.

Fields

name: String

The name that was looked up.

Budget

The grant’s max_calls budget is exhausted.

Generation

The gate’s generation is not in the grant’s valid_for_generation set.

Exec(Error)

A tool that passed the leash failed during execution (I/O, spawn, …).

Other(Error)

Any other failure from inside a tool.

Implementations

impl ToolError

pub fn denied(reason: impl Into<String>) -> ToolError

Convenience constructor for a denial with a formatted reason.

pub fn not_found(name: impl Into<String>) -> ToolError

Convenience constructor for a registry miss.

Trait Implementations

impl Debug for ToolError

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

Formats the value using the given formatter.

impl Display for ToolError

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

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.

impl From<Error> for ToolError

fn from(e: Error) -> ToolError

Converts to this type from the input type.

impl From<Error> for ToolError

fn from(e: Error) -> ToolError

Converts to this type from the input type.