import { CrewxPlugin } from '../plugin';
import type { Crewx } from '../facade/Crewx';
import type { ObserverContext, ObserverResult, ToolName } from './types';
export interface ObserverSubscription {
    beforeTool?: ToolName[] | true;
    afterTool?: ToolName[] | true;
    beforePrompt?: true;
    sessionStart?: true;
}
export declare abstract class ToolObserverPlugin extends CrewxPlugin {
    abstract readonly version: string;
    abstract readonly on: ObserverSubscription;
    private unsubs;
    abstract run(ctx: ObserverContext): Promise<ObserverResult>;
    attach(crewx: Crewx): void;
    detach(_crewx: Crewx): Promise<void>;
    private matchesTool;
    private buildContext;
}