{"message":"3DN Memento Server with Official SDK Transports","status":"running","transports":{"streamable-http":{"endpoint":"/mcp","protocol":"2025-03-26","methods":["GET","POST","DELETE"],"description":"Latest MCP protocol with resumability support"},"sse":{"endpoints":{"stream":"/sse","messages":"/messages"},"protocol":"2024-11-05","description":"Legacy SSE transport for backwards compatibility"},"streamable-http-lite":{"endpoint":"/mcplite","protocol":"2025-03-26","methods":["GET","POST","DELETE"],"description":"Read-only MCP Lite — query tools only, no write operations"},"sse-lite":{"endpoints":{"stream":"/sselite","messages":"/messageslite"},"protocol":"2024-11-05","description":"Read-only SSE transport for MCP Lite"}},"documentation":{"streamable-http-usage":["POST /mcp with initialize request to start session","GET /mcp with Mcp-Session-Id header to establish SSE stream","POST /mcp with Mcp-Session-Id header to send messages","DELETE /mcp with Mcp-Session-Id header to terminate session"],"sse-usage":["GET /sse to establish SSE stream and get sessionId","POST /messages?sessionId=<id> to send messages"]},"authentication":"X-API-Key header or ?key= query parameter required","timestamp":"2026-05-31T19:08:21.073Z"}