import type { ToolRegistry } from '../index.js';
import type { MCPRegistryHandle } from './mcp-control.js';
import type { Tool } from '../types/tool.js';
/**
 * `mcp_use` — meta-tool for ephemeral MCP tool calls in token-saving mode.
 *
 * Instead of the 4-step manual cycle (list → activate → use → deactivate),
 * the model calls this single tool. It:
 *  1. Activates the server's tools in the registry
 *  2. Calls the requested tool with the provided input
 *  3. Returns the result
 *  4. Deactivates the server's tools
 *
 * The tool is registered only when features.lazyMcp is active so the model
 * always has a way to reach MCP tools without them being in the prompt.
 */
export interface CreateMcpUseToolOptions {
    /** Live MCP registry handle (activate/deactivate/describe). */
    registry: MCPRegistryHandle;
    /** Tool registry — needed to resolve and call MCP tools by name. */
    toolRegistry: ToolRegistry;
}
export declare function createMcpUseTool(opts: CreateMcpUseToolOptions): Tool;
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