import type { ToolKernel } from '../kernel.js';
import type { TransportAdapter, TransportConfig } from './types.js';
export declare class ThinStdioAdapter implements TransportAdapter {
    readonly name = "thin-stdio";
    private server;
    private runtime;
    private readonly definitions;
    private readonly explicitUrl?;
    constructor(explicitUrl?: string);
    start(_kernel: ToolKernel | null, config: TransportConfig): Promise<void>;
    stop(): Promise<void>;
    private acquireRuntime;
    /**
     * Tool definitions come from the runtime, which is what lets this process
     * skip building a kernel. Cached per tier — definitions change only when the
     * runtime does, and a runtime swap re-runs start().
     */
    private loadDefinitions;
    private call;
    private proxyCall;
}
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