import type { EvalToolDescriptor } from "../eval/types.js";
import type { CustomTool } from "../extensibility/custom-tools/types.js";
import type { ToolSession } from "../tools/index.js";
/** Whether this session may expose kernel-defined tools to subagents (`eval.tools.enabled`). */
export declare function evalToolsEnabled(session: ToolSession): boolean;
/** Resolve named kernel-defined tools for a child session. */
export declare function describeEvalTools(session: ToolSession, names: readonly string[], signal?: AbortSignal): Promise<EvalToolDescriptor[]>;
/** List every tool currently defined across retained eval kernels. */
export declare function listEvalTools(session: ToolSession, signal?: AbortSignal): Promise<EvalToolDescriptor[]>;
/**
 * Materialize kernel-defined descriptors as custom tools for a child session.
 *
 * A child keeps these tools in its revive capture for as long as it can be revived,
 * so they hold `session`, whose kernel they call, only weakly: holding it strongly
 * kept the whole spawning session in memory after it parked. Its kernel is gone by
 * then anyway; a call after that reports the tool unavailable.
 */
export declare function createEvalCustomTools(session: ToolSession, descriptors: EvalToolDescriptor[]): CustomTool[];