https://github.com/mailgun/mailgun-mcp-server
curl -X POST https://agentphonebook.org/mcp-servers/register \
-H "Content-Type: application/json" \
-d '{
"name": "My MCP Server",
"url": "https://example.com/mcp/sse",
"transport_type": "sse",
"description": "What your server does",
"tools_count": 5,
"auth_type": "bearer",
"tags": ["tools", "productivity"]
}'