export type ServerToolRuntimeState = {
    enabled: boolean;
    updatedAtMs: number;
    updatedBy: string;
};
export type ServerToolLogDetail = {
    ts: string;
    requestId: string;
    flowId: string;
    tool: string;
    stage: string;
    result: string;
    message: string;
    status: 'success' | 'failure' | 'running' | 'info';
    entryEndpoint?: string;
    providerProtocol?: string;
};
export type ServerToolToolStats = {
    tool: string;
    executions: number;
    success: number;
    failure: number;
    lastSeenTs?: string;
};
export type ServerToolStatsSnapshot = {
    logPath: string;
    logExists: boolean;
    scannedLines: number;
    executions: number;
    success: number;
    failure: number;
    byTool: ServerToolToolStats[];
    recent: ServerToolLogDetail[];
};
export declare function getServerToolRuntimeState(): ServerToolRuntimeState;
export declare function isServerToolEnabled(): boolean;
export declare function setServerToolEnabled(enabled: boolean, updatedBy?: string): ServerToolRuntimeState;
export declare function logServerToolFiring(message: string, sessionId?: string): void;
export declare function readServerToolStatsSnapshot(options?: {
    maxLines?: number;
    maxTailBytes?: number;
    recentLimit?: number;
}): ServerToolStatsSnapshot;