/**
 * Utilities to work with request metadata and authorization headers.
 */
/**
 * Extract the Authorization header from the MCP extra request info.
 * The lookup is case-insensitive, supports array values taking the first,
 * and searches common locations used by different transports (HTTP, WS, stdio),
 * but ONLY from headers-like containers. No query/env/body fallbacks are allowed.
 *
 * @param extra - Arbitrary extra payload passed by the MCP runtime.
 * @returns The raw Authorization header value, or undefined when missing.
 */
export declare function extractAuthHeader(extra: any): string | undefined;
/**
 * Remove the Bearer prefix from an HTTP Authorization header value.
 * @param header - Authorization header value.
 * @returns The stripped token string.
 */
export declare function stripBearer(header: string): string;
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