import { type LLMToolResult } from '../LLMService.typedefs';
/**
 * The package-level tool-result normalization every tool call and delegation
 * passes through before its value reaches the model. `execute` is typed to
 * return `string | LLMStructuredToolResult`, but a tool is ordinary application
 * code: a mistyped one can hand back an object, a number, or nothing at all.
 * Coercing here keeps `[object Object]` out of the conversation without every
 * tool author serializing by hand.
 */
export declare function coerceToolResult(value: unknown): LLMToolResult;