export type MCPAnalyticsIDPrefix = 'evt' | 'ses';
export declare function newPrefixedId(prefix: MCPAnalyticsIDPrefix): string;
/**
 * Deterministic id derived from an arbitrary string. Used to map MCP protocol
 * session ids to SDK session ids so the same MCP session reuses the same
 * `$session_id` across server restarts.
 *
 * Uses the FNV-1a 64-bit hash (mixed twice to fill 32 hex chars), which works
 * everywhere — no `node:crypto`, no Web Crypto async API. Not cryptographic; we
 * only need stable, low-collision input → output mapping.
 */
export declare function deterministicPrefixedId(prefix: MCPAnalyticsIDPrefix, input: string): string;
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