supersendtx-mcp

MCP server for SuperSend TX — send email and manage domains, webhooks, suppressions, and templates from Cursor, Claude Code, and other MCP clients.

Install: npx -y supersendtx-mcp · Docs: https://docs.supersendtx.com/ai/mcp

Transports

| Mode | Command / URL | Auth | |------|---------------|------| | stdio (default) | npx -y supersendtx-mcp | SUPERSENDTX_API_KEY=stx_… or rnl_… | | HTTP (local) | npx -y supersendtx-mcp --http --port 3000 | Authorization: Bearer stx_… or rnl_… on each request | | HTTP (hosted) | https://mcp.supersendtx.com/mcp | OAuth (recommended) or Authorization: Bearer stx_… or rnl_… |

Optional: SUPERSENDTX_API_URL (e.g. http://localhost:3003/api for local API).

Local HTTP endpoint: http://127.0.0.1:3000/mcp · health: GET /health
Hosted health: GET https://mcp.supersendtx.com/health

Hosted OAuth: add only "url": "https://mcp.supersendtx.com/mcp" — the client runs the browser consent flow. Bearer stx_… or rnl_… still works for advanced setups.

Cursor (stdio)

.cursor/mcp.json:

{
  "mcpServers": {
    "supersendtx": {
      "command": "npx",
      "args": ["-y", "supersendtx-mcp"],
      "env": {
        "SUPERSENDTX_API_KEY": "stx_your_key_here"
      }
    }
  }
}

Cursor (local HTTP)

npx -y supersendtx-mcp --http --port 3000

{
  "mcpServers": {
    "supersendtx": {
      "url": "http://127.0.0.1:3000/mcp",
      "headers": {
        "Authorization": "Bearer stx_your_key_here"
      }
    }
  }
}

Cursor (hosted)

{
  "mcpServers": {
    "supersendtx": {
      "url": "https://mcp.supersendtx.com/mcp",
      "headers": {
        "Authorization": "Bearer stx_your_key_here"
      }
    }
  }
}

Claude Code

# stdio
claude mcp add --transport stdio supersendtx -- npx -y supersendtx-mcp

# HTTP (local — after starting --http server)
claude mcp add --transport http supersendtx http://127.0.0.1:3000/mcp

# HTTP (hosted)
claude mcp add --transport http supersendtx https://mcp.supersendtx.com/mcp

Export SUPERSENDTX_API_KEY for stdio, or configure Bearer headers for HTTP.

Tools

See https://docs.supersendtx.com/ai/mcp — emails, domains, webhooks, suppressions, templates, deliverability, webhook test.

License

MIT