Aleksey-Panf/b2b-enrichment-mcp

**Unified MCP server combining Hunter.io email finding with Apollo company intelligence. One connection, two data sources, built for Claude and Cursor.**
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Lead generation workflows need two things: email addresses and company context. Most MCP servers handle one or the other. This one handles both — Hunter.io for finding and verifying emails, Apollo.io for firmographic data like headcount, funding, and tech stack. One server, one config, Claude orchestrates across both.
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Tools
**Hunter.io — email intelligence**
- 🔍 hunter_find_emails_by_domain — get all emails at a company domain with names, titles, and confidence scores
- 🎯 hunter_find_email — find the most likely email for a specific person by name + domain
- ✅ hunter_verify_email — check whether an email is deliverable before sending
- 📊 hunter_count_emails — count indexed emails for a domain (free, no credits)
- 💳 hunter_check_account — view remaining Hunter credits (free)
**Apollo.io — company & people intelligence**
- 🏢 enrich_company — full firmographic profile: headcount, revenue, funding, tech stack, socials
- 👤 enrich_person_by_email — complete B2B profile from a single email address
- 🧑‍🤝‍🧑 bulk_enrich_people — enrich up to 10 contacts in one API call
- 🔎 enrich_person — profile lookup by name + domain, LinkedIn URL, or email
> search_people and search_companies are also included but require an Apollo Basic plan ($49/mo).
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Free tier friendly
You can run real enrichment workflows without paying anything upfront:
| Service | Free allowance |
|---|---|
| Hunter.io | 50 requests/month + 50 verifications |
| Apollo.io | Company enrichment — unlimited on free plan |
No credit card required to start. Both services have free tiers that cover the most common use cases.
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Installation
**Requires Python 3.11+**
Copy the env template and add your keys:
Get your API keys:
- **Hunter.io** → hunter.io/api-keys (free account, no card)
- **Apollo.io** → Settings → Integrations → API Keys at app.apollo.io
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Claude Desktop
Edit claude_desktop_config.json — on Windows at %APPDATA%\Claude\claude_desktop_config.json:
Restart Claude Desktop. The tools will appear automatically.
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Cursor
Add to .cursor/mcp.json in your project root, or to global Cursor MCP settings:
On macOS / Linux replace the command path with .venv/bin/python.
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Example queries