/**
 * Tools-list cache with version-aware key (D10) — TS parity with core-py.
 *
 * Cache filename: ``<server>-<port>-<srvVersion>-<coreVersion>.tools.json``.
 * A mismatch on either ``srvVersion`` (the upstream MCP server's version) or
 * ``coreVersion`` (mcp-core itself) invalidates the cache, so an upgrade on
 * either side never serves a stale tool surface.
 *
 * ``persistToolsCache`` writes via ``.tmp`` + ``rename`` (Windows-safe) and
 * suppresses all filesystem errors with a debug log. This is the D10
 * root-cause fix for ``Failed to persist capabilities cache`` hard-failures
 * (crg #384).
 */
export declare function cacheDir(): string;
export declare function cacheFilename(serverName: string, port: number, srvVersion: string, coreVersion: string): string;
export declare function atomicWrite(path: string, content: string): void;
export declare function persistToolsCache(serverName: string, port: number, srvVersion: string, coreVersion: string, tools: unknown[]): void;
export declare function loadToolsCache(serverName: string, port: number, srvVersion: string, coreVersion: string): unknown[] | null;
//# sourceMappingURL=cache.d.ts.map