Connect Your AI Tool
Nitrosend is designed to be controlled by AI. Instead of clicking through dashboards, you connect your AI tool and manage everything — campaigns, flows, contacts, templates, analytics — through natural language.
All plans, including free plans, have full access to Nitrosend MCP/API/CLI. Plan limits still apply to send volume, seats, AI action allowances, and paid add-ons.
MCP: The Fastest Way to Connect
MCP (Model Context Protocol) is an open standard that lets AI assistants connect directly to external tools. Nitrosend has a native MCP server, which means Claude, ChatGPT, Cursor, Codex, Gemini CLI, VS Code, Windsurf, Zed, and other MCP-compatible clients can access your full email marketing platform with zero middleware.
What MCP gives your AI
When you connect via MCP, your AI assistant gets:
- 24 specialized tools — compose emails, build flows, manage contacts, switch brand context, check analytics, control delivery, and more
- Live resources — your Brand Kit, account state, platform guide, and email design schema
- Full context — your AI knows your brand colors, tone of voice, and sending history before it writes a single email
- Two-way control — create, preview, test, approve, send, pause, and analyze, all from conversation
MCP vs REST API
| MCP | REST API | |
|---|---|---|
| Best for | Claude, ChatGPT, Cursor, Codex, Gemini CLI, VS Code, Windsurf, Zed | Custom apps, Zapier, n8n, Make, server-side integrations |
| Setup | 1 click, 1 command, or a short JSON config + OAuth sign-in | API key + define function calls or curl |
| AI context | Full — Brand Kit, schema, guide, account state | You provide context manually |
| Tools | 24 purpose-built tools with validation | Raw HTTP endpoints |
| Coding required | No | Minimal to moderate |
Use MCP whenever possible. It gives your AI far more context about your account, Brand Kit, and email best practices than the REST API alone. The result is better emails with less prompting.
Brands
MCP always operates on one current brand. nitro_get_status shows current_brand and available_brands; OAuth users can switch with nitro_select_brand, and that selection persists per user, OAuth application, and account. API key connections are pinned to the API key's brand. nitro_set_brand_kit is different: it edits the selected brand's Brand Kit, such as colors, logo, company details, and voice.
Choose your platform
MCP connections (recommended)
Use the per-client MCP path below for chat and editor clients. Do not install the Nitrosend CLI as a shortcut for Claude Desktop, Claude.ai, Cowork, ChatGPT, Cursor, or similar clients; the CLI is a separate terminal/CI surface.
Claude Desktop
Add Nitrosend as a custom connector in Claude Desktop.
Claude Cowork / Chat
Connect Nitrosend to Claude for collaborative email operations.
Claude Code
Add Nitrosend in one command for terminal-based email work.
Cursor
Stay inside Cursor while you build, test, and send emails.
ChatGPT
Connect the official Nitrosend app from the ChatGPT app marketplace.
OpenAI Codex CLI
Connect Codex CLI with codex mcp add and OAuth login.
Gemini CLI
Add Nitrosend to Gemini CLI with a short settings.json entry.
VS Code
Use Nitrosend from GitHub Copilot via VS Code's MCP support.
Windsurf
Connect Cascade directly to Nitrosend over remote HTTP MCP.
Zed
Add Nitrosend as a remote custom server in Zed with OAuth.
REST API connections
Audience imports
Supercharge your AI with Brand Kit & Memory
Once connected, set up Brand Kit and AI Memory to give your AI deep context about your business. This means every email it creates automatically matches your brand voice, follows your strategy, and improves over time.
Teach your AI your brand voice, colors, goals, and strategy so every email it creates is on-brand and on-strategy.