export type McpInstallStatus = 'installed' | 'missing-runner' | 'missing-package' | 'unknown';
export interface McpInstallInfo {
    status: McpInstallStatus;
    runner: string;
    pkg?: string;
}
interface CheckTarget {
    /** Remote (http/sse) MCP entries have no command — treated as status 'unknown'. */
    command?: string;
    args: string[];
}
export declare function invalidateMcpInstallCache(): void;
/** Read-only cached lookup. Never spawns. Returns 'unknown' if not yet probed. */
export declare function getMcpInstallSnapshot(target: CheckTarget): McpInstallInfo;
/** Async probe of a single target. Populates cache and returns the result. */
export declare function checkMcpInstallAsync(target: CheckTarget): Promise<McpInstallInfo>;
/**
 * Probe every target sequentially, populating the cache. Resolves once all
 * probes have either returned or timed out. Sequential (not parallel) to
 * avoid spawn-storms that can starve the extension host on activation.
 */
export declare function refreshMcpInstall(targets: CheckTarget[]): Promise<void>;
export declare function installCommandFor(info: McpInstallInfo): string | null;
export {};