/**
 * The unit's MCP tool list (DES-MCP-TOOLS-001 §8; slice S4): what the garden shim's `list` shows a
 * worker. The registry's callable tools are judged by the engine (`Core.listMcpTools`) for the unit
 * the worker's `WICKED_MCP_TOKEN` is bound to, with the same evaluation a call gets and no
 * arguments; a certain deny (an evaluator's write tool, a policy deny) is left out, and nothing is
 * recorded, so a list is never mistaken for a call.
 */
import type { McpToolsResponse } from '../core/types.js';
import type { McpCallableTool } from './registry.js';
export interface McpToolListDeps {
    registry: {
        callableTools(): Promise<McpCallableTool[]>;
    };
    /** `Core.listMcpTools`, read per request; `null` = the linked engine has none. */
    lister: () => ((requestJson: string) => Promise<string>) | null;
}
export interface McpToolListAnswer {
    status: number;
    body: McpToolsResponse | {
        error: string;
        code: 'invalid_token' | 'bad_request' | 'guard_error' | 'mcp_unavailable';
    };
}
export declare function listUnitTools(deps: McpToolListDeps, token: string): Promise<McpToolListAnswer>;
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