"American Express" matching MCP servers:

MCP server for the eXpress corporate messenger, enabling AI agents to list chats, search contacts, send messages, and wait for incoming messages with end-to-end encryption.

Agentic AI instruction encoding. 86.8% smaller than JSON. Inference-free decode by table lookup. 342 opcodes, 26 namespaces, three conformant SDKs. Confirmed over LoRa mesh radio. Apache 2.0 with express patent grant.