LM Studio MCP setup - Sendmux

Use this page to connect Sendmux MCP to your AI client.

Private HTTP

Start a local HTTP MCP server:

SENDMUX_API_KEY=smx_mbx_... \
SENDMUX_MCP_HTTP_BEARER_TOKEN=local-mcp-token \
sendmux-mcp-mailbox --transport http --host 127.0.0.1 --port 8765

Use http://127.0.0.1:8765/mcp as the client URL. LM Studio follows Cursor’s mcp.json notation. Open Program > Install > Edit mcp.json and add:

{
  "mcpServers": {
    "sendmux-local": {
      "url": "http://127.0.0.1:8765/mcp",
      "headers": {
        "Authorization": "Bearer local-mcp-token"
      }
    }
  }
}