PyPI package: `sendmux-mcp` PyPI version: `2.1.3` npm package: `sendmux-mcp` npm version: `1.0.0` Registry metadata version: `2.1.4` Hosted resource: `https://mcp.sendmux.ai/mcp` Hosted transport: Streamable HTTP Curated tool count: 54 Certified protocol versions: `2025-11-25`, `2026-07-28` Runtime-accepted protocol versions: `2024-11-05`, `2025-03-26`, `2025-06-18`, `2025-11-25`, `2026-07-28`. Runtime acceptance provides compatibility; it does not certify each version.