/**
 * MCP Gateway endpoint using stateful Streamable HTTP Transport.
 *
 * Each client session gets its own transport+server pair, identified by mcp-session-id header.
 * POST without sessionId creates a new session.
 * POST/GET/DELETE with sessionId routes to the existing session transport.
 */
import type { FastifyInstance, FastifyRequest } from 'fastify';
import type { SessionMode } from '../../../shared/models/constants.js';
/**
 * Resolves the effective session mode for a request.
 * Priority: request header > UA keyword match > default (SESSION_MODE_STATEFUL).
 */
export declare function resolveSessionMode(request: FastifyRequest): SessionMode;
export declare function mcpGatewayRoutes(fastify: FastifyInstance): Promise<void>;
//# sourceMappingURL=gateway.d.ts.map