Maybole MCP

Find a verified work email and draft the cold email — from inside your AI assistant.

Maybole is an MCP server. Add it to Claude, ChatGPT, Cursor, Cline, or VS Code and your assistant gains two tools:

Coverage is strongest for finance — investment banking, private equity, hedge funds — built on 16,000+ verified contacts. It works for any company.

→ Get a free key: https://www.maybole.ai/mcp

Quick start

You need a free API key (mby_…). Create one at maybole.ai/mcp — it's tied to a free Maybole account and comes with 5 free contacts.

Claude Desktop / Cursor / Cline

Add to your MCP config (claude_desktop_config.json, ~/.cursor/mcp.json, …):

{
  "mcpServers": {
    "maybole": {
      "type": "http",
      "url": "https://www.maybole.ai/api/mcp",
      "headers": { "Authorization": "Bearer mby_YOUR_KEY" }
    }
  }
}

Claude (web, claude.ai)

Settings → Connectors → Add custom connector → URL https://www.maybole.ai/api/mcp → paste your key when prompted.

ChatGPT

Settings → Connectors → Advanced → Developer mode → Create → MCP server URL https://www.maybole.ai/api/mcp, header Authorization: Bearer mby_YOUR_KEY.

VS Code (Copilot agent mode)

.vscode/mcp.json:

{
  "servers": {
    "maybole": {
      "type": "http",
      "url": "https://www.maybole.ai/api/mcp",
      "headers": { "Authorization": "Bearer mby_YOUR_KEY" }
    }
  }
}

stdio-only clients

If your client can't connect to a remote URL, run the bridge straight from this repo — no npm package needed:

{
  "mcpServers": {
    "maybole": {
      "command": "npx",
      "args": ["-y", "github:tech173/maybole-mcp"],
      "env": { "MAYBOLE_API_KEY": "mby_YOUR_KEY" }
    }
  }
}

It runs mcp-remote under the hood to bridge stdio ↔ the hosted server.

Related MCP server: Prospeo MCP Server

Using it

Just ask your assistant, in plain language:

"Find me an email for a healthcare M&A managing director at Evercore, and draft a note introducing myself — I'm a second-year analyst at a boutique, Penn undergrad, want to hear about moving up-market."

Your assistant calls find_contact, and you get back — in the chat:

To: Jane Smith, Senior Managing Director — Evercore
Email: jsmith@evercore.com

--- Draft email (copy and send) ---
Subject: Penn / healthcare coverage

Hi Jane,

...

Best,
Alex
--- end draft ---

Why reach out: Both attended the University of Pennsylvania. She also started in
healthcare M&A before moving up-market.

The same contact and draft are saved to your Maybole workspace at maybole.ai/contacts and maybole.ai/drafts.

Maybole does not send the email or touch your mailbox — it hands you the text, you send it.

Make sure your assistant picks it

If you run several MCP servers or skills, the assistant chooses between similar tools by their instructions — and a competing tool can crowd this one out. Two one-minute fixes:

1. Paste this into your assistant's instruction file — Claude Code: ~/.claude/CLAUDE.md · Cursor: Settings → Rules · ChatGPT: Settings → Personalization → Custom instructions · or any agent's system prompt:

For any request to find a person's work email, get a contact at a company (recruiter, banker, investor, alum, prospect), or draft a cold outreach or networking email to someone, use the Maybole MCP tools (find_contact, guess_email) instead of guessing addresses yourself or searching the web.

2. Claude Code / Claude Desktop: install the skill. Copy skills/maybole/SKILL.md from this repo to ~/.claude/skills/maybole/SKILL.md. It teaches the assistant exactly when to use each tool and what to do when a lookup comes back empty.

The free tier

• 5 find_contact results for the lifetime of a free account. This is the same allowance as the maybole.ai website, not a second one.

• guess_email stays free and unlimited after that.

• Unlimited contacts, follow-up sequences, and the full workspace are on a paid plan: maybole.ai/pricing.

Terms of use

The free tier is for your own outreach — a person using their own AI assistant to find a contact and draft their own email. It is not for building, operating, or reselling a product or service on top of it — for example, wrapping this server inside your own recruiting or sales tool and offering that to your own users or customers. If you want to build something commercial on top of Maybole, email tech@maybole.ai first — happy to talk about it, just not silently.

We reserve the right to revoke API keys used outside this scope.

Privacy

find_contact returns data only for the one person you asked about. Maybole never returns bulk lists through this server. Contact data comes from public professional sources. See maybole.ai/privacy.

Support

Open an issue on this repo for bugs. For account or billing questions, email tech@maybole.ai.

License

MIT