/**
 * BrowserContextProcessor
 *
 * Input processor that injects browser context into agent prompts.
 * Similar to ChatChannelProcessor for channels.
 *
 * - `processInput`: Adds a system message with stable context (provider, sessionId, headless mode).
 * - `processInputStep`: At step 0, prepends a `<system-reminder>` to the user's message
 *   with per-request data (current URL, page title).
 *
 * Reads from `requestContext.get('browser')`.
 *
 * @example
 * ```ts
 * const agent = new Agent({
 *   browser: new AgentBrowser({ ... }),
 *   inputProcessors: [new BrowserContextProcessor()],
 * });
 * ```
 */
import type { ProcessInputArgs, ProcessInputResult, ProcessInputStepArgs, ProcessInputStepResult } from '../processors/index.js';
/**
 * Browser context stored in RequestContext.
 * Set by the browser implementation or deployer.
 */
export interface BrowserContext {
    /** Browser provider name (e.g., "agent-browser", "stagehand") */
    provider: string;
    /** Session ID for tracking */
    sessionId?: string;
    /** Whether browser is running in headless mode */
    headless?: boolean;
    /** Current page URL (updated per-request) */
    currentUrl?: string;
    /** Current page title (updated per-request) */
    pageTitle?: string;
    /** Whether browser is currently running */
    isRunning?: boolean;
}
/**
 * Input processor that injects browser context into agent prompts.
 */
export declare class BrowserContextProcessor {
    readonly id = "browser-context";
    processInput(args: ProcessInputArgs): ProcessInputResult;
    processInputStep(args: ProcessInputStepArgs): ProcessInputStepResult | undefined;
}
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