ToolResultPayload

The tool that produced the result. Usually the real tool name; falls back to "" in the rare uncorrelated case where the ToolMessage carries no name and no tool.use was correlated to supply one.

The tool-call id, or None when it could not be correlated.

The parsed tool-call arguments, or {} when uncorrelated.

"success", or "error" for a failed, rejected, or cancelled call.

The tool's returned content, capped to HOOK_TOOL_OUTPUT_LIMIT. When the full output exceeded the cap, the value ends with TOOL_OUTPUT_TRUNCATION_MARKER so a consumer (e.g. a secret/policy scanner) can tell a truncated result from a genuinely short one.