import type { HippoMemoryConfig } from "../config.js";
import { type InjectionResult } from "../context-injector.js";
import type { MemoryService } from "../memory-service.js";
export interface BeforeAgentStartEvent {
    prompt: string;
    systemPrompt: string;
}
export interface BeforeAgentStartDeps {
    service: MemoryService;
    config: HippoMemoryConfig;
    isToggledOff: () => boolean;
}
export type BeforeAgentStartHook = (event: BeforeAgentStartEvent, ctx: unknown) => Promise<InjectionResult | undefined>;
export declare function createBeforeAgentStartHook(deps: BeforeAgentStartDeps): BeforeAgentStartHook;
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