@nitrosend/mcp

Optional stdio bridge for Nitrosend. Most clients should connect directly to Nitrosend's remote MCP server at https://api.nitrosend.com/mcp; this package exists for stdio-only clients and local development.

For Claude Desktop, Claude.ai, and Claude Cowork, use the remote MCP connector UI. Do not install @nitrosend/cli or this stdio bridge for the standard Claude connector setup.

Manage contacts, compose emails, build automated flows, and launch campaigns through natural language.

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Setup by client

Most clients support OAuth — sign in via your browser, no API keys needed.

Claude Code

claude mcp add --transport http nitrosend https://api.nitrosend.com/mcp

Or add to .mcp.json:

{
  "mcpServers": {
    "nitrosend": {
      "type": "http",
      "url": "https://api.nitrosend.com/mcp"
    }
  }
}

OAuth sign-in happens automatically on first use.

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Claude Desktop

Go to Settings → Connections → Add Custom Connector and enter:

https://api.nitrosend.com/mcp

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Claude.ai (web + mobile)

Go to Settings → Connectors → Add custom connector and enter:

https://api.nitrosend.com/mcp

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Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "nitrosend": {
      "url": "https://api.nitrosend.com/mcp"
    }
  }
}

Cursor handles Nitrosend as a direct remote MCP server. On first use, it prompts for OAuth sign-in.

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VS Code (Copilot)

Add to .vscode/mcp.json:

{
  "servers": {
    "nitrosend": {
      "type": "http",
      "url": "https://api.nitrosend.com/mcp"
    }
  }
}

VS Code handles OAuth automatically via its built-in MCP auth flow.

---

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "nitrosend": {
      "serverUrl": "https://api.nitrosend.com/mcp"
    }
  }
}

Windsurf supports OAuth natively for HTTP servers — sign in via your browser on first use.

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Codex CLI

codex mcp add nitrosend --url https://api.nitrosend.com/mcp
codex mcp login nitrosend

Or add to ~/.codex/config.toml:

[mcp_servers.nitrosend]
url = "https://api.nitrosend.com/mcp"

Then run codex mcp login nitrosend to authenticate via OAuth.

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Zed

Add to your Zed settings:

{
  "context_servers": {
    "nitrosend": {
      "url": "https://api.nitrosend.com/mcp"
    }
  }
}

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Any other MCP client

If your client supports HTTP/SSE transport, point it at:

https://api.nitrosend.com/mcp

If your client only supports stdio, use this bridge package with an API key:

{
  "command": "npx",
  "args": ["-y", "@nitrosend/mcp"],
  "env": {
    "NITROSEND_API_KEY": "nskey_live_..."
  }
}

Get your API key at Settings → API Keys in the Nitrosend dashboard.

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What you can do

Once connected, your agent can:

• Read — query contacts, segments, flows, campaigns, and account status
• Compose — create emails with sections, build multi-step flows, set up campaigns
• Manage — import contacts, create segments, manage lists and tags
• Deliver — preview emails, run spam checks, send tests, approve and schedule campaigns
• Insights — view open/click/unsubscribe metrics and trends

Environment variables

Variable	Description
NITROSEND_API_KEY	API key (nskey_live_...) — for stdio transport
NITROSEND_BEARER_TOKEN	OAuth bearer token — alternative to API key
NITROSEND_API_URL	Override API endpoint (default: https://api.nitrosend.com/mcp)

Requirements

• Node.js 18+

License

MIT