> ## 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.

# Kiro MCP setup

> Configure Sendmux MCP in Kiro.

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

## Hosted OAuth

Use the hosted endpoint when the client supports remote MCP OAuth:

```text theme={null}
https://mcp.sendmux.ai/mcp
```

Add this to `.kiro/settings/mcp.json` for one workspace or `~/.kiro/settings/mcp.json` for all workspaces.

```json theme={null}
{
  "mcpServers": {
    "sendmux": {
      "url": "https://mcp.sendmux.ai/mcp",
      "disabled": false
    }
  }
}
```

Kiro opens the browser OAuth flow when the hosted server asks for authorisation.

## 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 to `.kiro/settings/mcp.json` or `~/.kiro/settings/mcp.json`.

```json theme={null}
{
  "mcpServers": {
    "sendmux-mailbox": {
      "command": "sendmux-mcp-mailbox",
      "args": [],
      "env": {
        "SENDMUX_API_KEY": "${SENDMUX_MBX_KEY}"
      },
      "disabled": false
    }
  }
}
```

## 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
    }
  }
}
```