import type { AgentTool } from '@earendil-works/pi-agent-core';
export type ToolLockMode = 'none' | 'exclusive';
export declare function resolveToolLockMode(tool: AgentTool<any, any>): ToolLockMode;
export declare class ToolConcurrencyController {
    private tail;
    run<T>(mode: ToolLockMode, fn: () => Promise<T>): Promise<T>;
    private runExclusive;
}