export declare const MODERN_PROTOCOL_VERSIONS: readonly string[];
export declare const LEGACY_PROTOCOL_VERSIONS: readonly string[];
export declare const SUPPORTED_PROTOCOL_VERSIONS: readonly string[];
export declare const SERVER_INFO_META_KEY = "io.modelcontextprotocol/serverInfo";
export declare function isModernProtocolVersion(version: string): boolean;
export declare function isSupportedProtocolVersion(version: string): boolean;
export declare function tasksUnavailableMessage(protocolVersion?: string): string;
export declare function tasksUnsupportedByServerMessage(): string;
export declare function discoverUnavailableMessage(protocolVersion?: string, sessionName?: string): string;
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