export declare const DEFAULT_MCP_REQUEST_TIMEOUT_MS = 90000;
export declare const MIN_MCP_REQUEST_TIMEOUT_MS = 10;
export declare const MAX_MCP_REQUEST_TIMEOUT_MS = 90000;
export declare const MCP_READ_TIMEOUT_MS = 30000;
export declare const MCP_EXTERNAL_IO_TIMEOUT_MS = 10000;
export declare const MCP_MUTATION_TIMEOUT_MS = 60000;
export type McpToolOperation = 'task_prepare' | 'task_answer' | 'memory_checkpoint' | 'curator_check' | 'curator_globalize';
export type McpDeadlineClass = 'read' | 'external' | 'mutation';
export interface McpDeadlinePolicy {
    readMs: number;
    externalMs: number;
    mutationMs: number;
    hardMaxMs: number;
}
export interface McpDeadlinePolicyOverrides {
    readMs?: number;
    externalMs?: number;
    mutationMs?: number;
    hardMaxMs?: number;
}
export interface McpDeadlineContext {
    readonly operation: McpToolOperation;
    readonly deadlineAt: number;
    remainingMs(): number;
    childTimeoutMs(requestedMs: number): number;
}
export interface RunWithMcpDeadlineOptions<T> {
    operation: McpToolOperation;
    timeoutMs?: number;
    policy?: McpDeadlinePolicy;
    signal?: AbortSignal;
    operationFn: (signal: AbortSignal, context: McpDeadlineContext) => Promise<T> | T;
}
export declare class McpRequestTimeoutError extends Error {
    readonly operation: McpToolOperation;
    readonly code: "MCP_REQUEST_TIMEOUT";
    readonly retryable: true;
    constructor(operation: McpToolOperation);
}
export declare class McpRequestCancelledError extends Error {
    readonly operation: McpToolOperation;
    readonly code: "MCP_REQUEST_CANCELLED";
    readonly retryable: false;
    constructor(operation: McpToolOperation);
}
export declare const DEFAULT_MCP_DEADLINE_POLICY: Readonly<McpDeadlinePolicy>;
export declare function createMcpDeadlinePolicy(overrides?: McpDeadlinePolicyOverrides): McpDeadlinePolicy;
export declare function operationDeadlineClass(operation: McpToolOperation): McpDeadlineClass;
export declare function timeoutForOperation(operation: McpToolOperation, policy?: McpDeadlinePolicy): number;
export declare function runWithMcpDeadline<T>({ operation, timeoutMs, policy, signal, operationFn, }: RunWithMcpDeadlineOptions<T>): Promise<T>;
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