Most LLMs can't help you prospect. They'll give you company names, maybe some generic advice. But when it comes to actual contact details like phone numbers and email addresses, that’s where they fall apart.
The problem here is the data, or the lack of it. Without access to a comprehensive, verified B2B database, even the most sophisticated language models hit a wall when you need actionable intelligence.
So we fixed that.
What We Built
ZoomInfo now integrates directly into Anthropic's Claude through MCP (Model Context Protocol) server technology. This is a direct connection between Claude's natural language processing and ZoomInfo's database of 300+ million professional profiles and 100+ million companies.
What does that mean for you? You can ask Claude to build you a prospecting list and it'll pull real, verified contact data from ZoomInfo in seconds. No need to export, switch tabs, or manually enrich.
How It Actually Works
Here's a real example:
Let's say you need VPs of Sales at Boston-based companies. So you type that into Claude.
Behind the scenes, Claude:
Interprets your natural language query
Connects to ZoomInfo via the MCP server
Searches matching records
Returns the information you need, ready to use
In return, you get:
Full names and titles
Direct dial phone numbers
Verified email addresses
Company details
One-click links to ZoomInfo profiles
One-click links to LinkedIn profiles
When you see someone you want to reach, all you have to do is click. Then you're immediately in their full ZoomInfo record or on their LinkedIn page without copy-pasting.
Yep, that's it. No extra steps. It really is that simple.
The Alternative (And Why It Doesn't Work)
To understand why this matters, try the same thing without ZoomInfo connected.
It’s the same prompt in the same LLM, just without the data integration.
What do you get?
Claude will give you a list of Boston-based companies. It might surface some C-level executives from public sources. It'll probably offer some job market insights like hiring trends and industry analysis.
But instead of verified contact details, you’ll be told to visit company websites or consult a B2B database.
That doesn’t mean there’s a problem with Claude. LLMs can only work with what they can access. Without a real-time connection to verified B2B contact data, they're pretty much limited to publicly available information, and that rarely includes the details you actually need to start a conversation.
That's the gap. LLMs without real data can't do the job.
The Real Difference
Let's break down what changes when you connect Claude to ZoomInfo:
With ZoomInfo + Claude:
Deep database of qualified contacts in seconds
Direct dial phone numbers (not switchboard lines)
Verified, deliverable email addresses
Current job titles and company information
One-click access to full profiles
Ready to import into your CRM or start outreach immediately
Without ZoomInfo:
Generic company lists with no contact details
Manual research required
No way to verify if the information is current
Dead ends when you actually try to reach someone
The gap isn't small. It's the difference between "here's some context" and "here's who to call, how to reach them, and what you need to know."
Why This Matters for GTM Teams
LLMs are powerful tools. They can summarize, analyze, and draft. But without comprehensive, accurate data, they can't help you prospect the way you need them to.
That's the problem we solved with this integration.
When you connect Claude to ZoomInfo, you're getting the kind of actionable intelligence that turns a question into a qualified list in under a minute.
Here’s why that’s such a big deal:
Speed: What once took hours now takes seconds. Ask a question, get the information you need, start calling.
Accuracy: ZoomInfo's data is verified and updated in real time. You're not working off stale LinkedIn profiles or outdated org charts.
Efficiency: No more toggling between tools or turning to manual enrichment because you can’t trust that the data is current.
The Bigger Picture
This integration is part of a larger shift in how GTM teams work. AI is getting better at understanding what you need. But AI without data is just a really good guesser.
The magic happens when you combine natural language processing with comprehensive, verified B2B intelligence.
If you're already using Claude for research, writing, or analysis, this changes what's possible. You can now use it for the thing that actually drives revenue: finding and reaching the right people.