import { z } from "zod";
import type { HookState } from "./state.ts";
import type { HookDeps } from "./deps.ts";
export declare function registerToolSchema(toolName: string, args: z.ZodRawShape): void;
/**
 * Register a tool as deprecated so that runtime invocations emit a warning.
 * @param toolName - The tool name to mark deprecated.
 * @param message - Optional migration hint shown in the warning log.
 */
export declare function registerDeprecatedTool(toolName: string, message?: string): void;
/**
 * Pre-execution hook: validates tool parameters with zod .strict() mode.
 *
 * If the model passes unknown parameters (e.g. hallucinated `block=true` on
 * dispatch_output), zod's default .strip() mode silently removes them — the tool
 * returns "still running" and the model enters a polling loop because it thinks
 * its blocking request was ignored.
 *
 * Using .strict() here makes unknown keys a validation error. We throw with a
 * clear message listing the valid parameters, so the model can self-correct.
 */
export declare function handleToolBefore(input: {
    tool: string;
    sessionID: string;
    callID: string;
}, output: {
    args: any;
}, state?: HookState, deps?: HookDeps): Promise<void>;
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