/**
 * `set_user_agent` (batch-14, Apple WIP `Page.overrideUserAgent`).
 *
 * Probe-confirmed (2026-05-17) on iOS 26.5.0 + Apple system WKWebView:
 *   - Method exists; `Page.overrideUserAgent({value})` returns `{}` immediately.
 *   - **Override applies on next navigation only** — `navigator.userAgent` and
 *     outgoing request `User-Agent` header keep the OLD value until the page
 *     reloads. Setting + reloading: navigator.userAgent + first xhs fetch
 *     header both showed `wdm-probe/2.0` ✅.
 *
 * This tool eliminates the spec §"Future optimization §1" claim that UA
 * override required a host-side native bridge — Page.overrideUserAgent
 * is the official upstream answer (no condition / always available, see
 * `Source/JavaScriptCore/inspector/protocol/Page.json`).
 *
 * Semantics:
 *   - `value: <non-empty string>` → set override, default-reload to apply
 *   - `value: ""` or omitted → clear override (default-reload to restore)
 *   - `reload: false` → don't reload; user must reload manually for change
 *     to take effect (rare — useful when chaining several overrides before a
 *     single reload).
 */
import { z } from 'zod';
export declare const setUserAgentTool: {
    name: string;
    description: string;
    inputSchema: {
        value: z.ZodOptional<z.ZodString>;
        reload: z.ZodOptional<z.ZodBoolean>;
    };
    handler: ({ value, reload }: {
        value?: string;
        reload?: boolean;
    }) => Promise<{
        content: {
            type: "text";
            text: string;
        }[];
    }>;
};