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mcp/harbor
Grok

Cypher eSIM for Grok

com.cypheresim/esim

Buy no-KYC travel eSIMs and eSIMs with a real phone number in 180+ countries, paid in crypto.

client:Grok transport:streamable-http tools:9

Install Cypher eSIM in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "esim": {
      "type": "http",
      "url": "https://cypheresim.com/mcp"
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

What Grok can do once it is connected

Cypher eSIM in other clients

Cypher eSIM MCP server