> ## Documentation Index
> Fetch the complete documentation index at: https://sendmux.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Cline MCP setup

> Configure Sendmux MCP in Cline.

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

## Local stdio

Install the local package once:

```bash theme={null}
pip install sendmux-mcp
```

Use a mailbox key for Mailbox or Sending:

```bash theme={null}
export SENDMUX_MBX_KEY=smx_mbx_...
```

Use a root key for Management:

```bash theme={null}
export SENDMUX_ROOT_KEY=smx_root_...
```

Add this through the Cline MCP settings JSON or `~/.cline/mcp.json`.

```json theme={null}
{
  "mcpServers": {
    "sendmux-mailbox": {
      "command": "sendmux-mcp-mailbox",
      "env": {
        "SENDMUX_API_KEY": "smx_mbx_..."
      },
      "disabled": false,
      "autoApprove": []
    }
  }
}
```

## Private HTTP

Start a local HTTP MCP server:

```bash theme={null}
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.

```json theme={null}
{
  "mcpServers": {
    "sendmux-local": {
      "url": "http://127.0.0.1:8765/mcp",
      "headers": {
        "Authorization": "Bearer local-mcp-token"
      },
      "disabled": false,
      "autoApprove": []
    }
  }
}
```