Enum ToolSpanOutcome 

pub enum ToolSpanOutcome<'a> {
    Completed {
        output: &'a str,
        success: bool,
        duration_ms: Option<u64>,
    },
    AwaitingConfirmation,
    EventStoreError {
        message: &'a str,
    },
}

Available on crate feature otel only.

Terminal outcome of a tool execution, used to stamp the outcome attributes + metric labels on an execute_tool span.

Mirrors the match arms of agent_loop::tool_execution::finish_tool_span so the agent_sdk.tool.outcome value and error.type value match across loops.

Variants

Completed

Tool ran (or was short-circuited) and produced a result. The outcome string is derived from the result body / success flag exactly as the in-process loop does.

Fields

output: &'a str

Tool output body; inspected for the Unknown tool: / Blocked: / Rejected: sentinels.

success: bool

Whether the tool reported success.

duration_ms: Option<u64>

Wall-clock duration in milliseconds, if measured.

AwaitingConfirmation

Tool requires user confirmation before running.

EventStoreError

The execution boundary itself errored (e.g. event-store commit failure). Recorded with error.type = event_store.

Fields

message: &'a str

Error message for the span status.