How to Connect ZoomInfo to Claude Using MCP

ZoomInfo is available as a native MCP connector inside Claude. Once connected, you can search ZoomInfo's database, enrich companies and contacts, find lookalike accounts, and get AI-powered contact recommendations, all through natural language conversation. No API keys, no code, no browser extensions.

This guide walks through setup, what you get once connected, and how to verify everything is working.

What You Need Before You Start

A ZoomInfo subscription with bulk data credits. Any ZoomInfo package qualifies (Sales, Copilot, Studio, or ZI Lite), but your account must have bulk data credits enabled. MCP does not work with recurring monthly credits. Check with your ZoomInfo admin if you're unsure. See the full requirements.

Your own ZoomInfo login. Each user authenticates individually. Admin-only seats (which have no data access by design) cannot use MCP. The data you can access through Claude matches your ZoomInfo entitlements, so if your seat includes contact emails and direct dials, those will be available in Claude too.

Claude with MCP support. Claude needs to support connectors for this integration. See the Claude client setup guide for specifics.

Step-by-Step Setup

1. Open Claude Settings

Go to Settings → Connectors in Claude Desktop.

2. Find and Enable ZoomInfo

Search for ZoomInfo in the connector marketplace and select it. ZoomInfo is listed as a native integration.

3. Authenticate

Claude will redirect you to ZoomInfo's authentication flow. Sign in with your ZoomInfo credentials and authorize the connection. This is a standard OAuth handshake granting Claude permission to make API calls to ZoomInfo on your behalf.

4. Confirm the Connection

Start a new chat and ask: "What ZoomInfo tools do you have access to?" Claude will list all available tools. If they appear, setup is complete.

For the full walkthrough with screenshots and troubleshooting, see the Claude client setup guide.

What You Get Once Connected

With the ZoomInfo connector active, Claude gains access to thirteen tools that cover the full audience building, research, and intent data lifecycle. Here's what each one does and when Claude uses it.

Lookup

Retrieves standardized reference values from ZoomInfo's taxonomy. This includes management levels (VP, Director, C-Suite), metro regions, industries, employee count ranges, revenue ranges, job functions, departments, technology vendors and products, and more.

You'll never need to call this directly. Claude uses it behind the scenes to translate your natural language requests into exact ZoomInfo filter values. When you say "mid-market SaaS companies in Boston," Claude looks up the right metro region name, industry codes, and employee count ranges before running your search.

Lookup covers management levels, metro regions, industries, employee counts, revenue ranges, job functions, departments, technology vendors and products, intent topics, buying groups, board members, news categories, company rankings, and more.

Search Companies

Finds companies matching firmographic criteria. Filters include industry, location, employee count, revenue, growth rate, funding history, technology stack, company type, and dozens more.

Search Contacts

Finds individual professionals by name, title, company, seniority, department, location, education, and other attributes. This is the core list building tool.

Enrich Companies

Takes a company you already know (by name, domain, ticker, or ZoomInfo ID) and returns a full profile: business description, financials, employee count, tech stack, corporate hierarchy, funding history, and headquarters information. Supports batch enrichment of up to 10 companies per call.

Enrich Contacts

Takes a contact you already know (by email, name + company, phone, or ZoomInfo ID) and returns their full professional profile including job title, company details, contact information, accuracy scores, and employment history. Also supports batches of up to 10.

Find Similar Companies

Provide a reference company and get back up to 100 lookalike companies, ranked by a machine learning model that analyzes industry, revenue, employee count, and other firmographic signals. This is how you expand from a successful account into a target list of similar ones.

Find Similar Contacts

Provide a reference person and get back contacts with similar professional profiles. You can optionally constrain results to a specific target company, which is useful for finding the right stakeholders at a new account based on a buyer persona you already know.

Contact Recommendations

Returns AI-ranked recommendations of who to contact at a target company based on your ZoomInfo usage history. Supports three modes: prospecting (based on your past views, exports, and copies), deal acceleration (based on closed-won CRM contacts for new business), and renewal and growth (based on closed-won contacts for expansion).

Account Research

A high-level research tool that combines ZoomInfo market data with your CRM and conversation history to answer natural language questions about a company. Ask "What's going on with this account?" or "Prepare me for a meeting with their VP of Engineering" and Claude synthesizes company context, relationship status, deal history, and recent developments into a briefing. Best for call prep, deal reviews, and general account orientation.

Contact Research

The person-level equivalent of Account Research. Give Claude a contact and ask about their background, role, career history, or your relationship with them. Claude combines ZoomInfo profile data with CRM history to produce meeting prep, outreach planning context, or general orientation on who someone is and why they matter to your deal.

Search Intent

Finds companies showing buying intent for specific topics across ZoomInfo's intent signal database. Each signal includes a score (60-100) indicating interest level and an audience strength rating (A through E) showing how many people at the company are researching the topic. Combine intent signals with firmographic filters to build audiences of companies actively researching your category.

Enrich Intent

Fetches intent signals for a specific company you already know. Provide a company identifier and up to 50 intent topics, and get back signal scores and audience strength for each. Use this to prioritize outreach timing or validate whether a target account is actively in-market.

Submit Feedback

A utility tool for sending feedback to ZoomInfo about data quality, feature requests, or access issues directly from within Claude.

Verifying the Connection Works

The simplest way to confirm everything is working: ask Claude a question that requires ZoomInfo data.

Try something like:

or

If the connector is working, Claude will call the appropriate ZoomInfo tool and return live data. You'll see the tool being invoked in the conversation. If something isn't connected properly, Claude will let you know it can't access ZoomInfo and you can revisit the connector settings.

For a more thorough test, try a multi-step request:

This exercises Lookup, Search Companies, and Search Contacts in sequence. All three returning results confirms the connection. To test intent data, try:

This exercises Lookup (to resolve the intent topic) and Search Intent. Signal scores and audience strength ratings in the results confirm your intent data access is working.

How Authentication and Permissions Work

A few things worth knowing about the security model:

Your ZoomInfo entitlements carry over. Claude can only access data that your ZoomInfo account is entitled to. If your seat doesn't include direct dial phone numbers, Claude won't be able to surface them either. The connector doesn't grant any additional data access beyond what you already have.

The connection persists across sessions. Once you authenticate, you don't need to re-authenticate every time you start a new conversation. The connector stays active until you explicitly disconnect it.

You can disconnect at any time. If you want to revoke Claude's access to ZoomInfo, go back to the connectors store and disable the integration. This immediately terminates the connection.

Tips for Getting the Most Out of the Integration

You don't need to know ZoomInfo's filter taxonomy. Describe what you want in plain language. "Series B fintech companies in the Southeast with fast headcount growth" is a perfectly good prompt. Claude handles the translation into ZoomInfo's internal field values.

Chain your requests in a single conversation. Claude maintains context across messages. Start with a company search, narrow it down, pivot to contacts, enrich the best ones, and draft outreach, all in one thread. Each step builds on the last.

Combine ZoomInfo with Claude's other capabilities. The ZoomInfo connector is one of several tools Claude can access simultaneously. Combine ZoomInfo data with web search for recent news, use artifacts to build interactive comparison tables, export results as spreadsheets, or draft personalized emails. All within the same conversation.

Use intent data to time your outreach. Search Intent and Enrich Intent let you identify accounts actively researching your category. Layer intent signals on top of firmographic searches to prioritize accounts that are both a good fit and actively in-market.

Use batch operations for efficiency. Both enrichment tools support up to 10 records per call. Instead of asking Claude to enrich contacts one at a time, give it a list.

Troubleshooting

"I asked a ZoomInfo question but Claude didn't use the tool." Make sure the connector shows as active in your settings. If it was recently enabled, try refreshing the page or starting a new conversation.

"Claude says it can't find any results." This usually means the search criteria are too narrow. Try broadening your filters. For example, expand the employee count range or remove one of the location constraints. Claude will tell you what filters it applied, so you can see what to adjust.

"I'm getting fewer fields than expected." The fields returned depend on your ZoomInfo subscription tier. If you're missing contact emails or phone numbers, check with your ZoomInfo admin to confirm your entitlements include those data points.

"The connection stopped working." Your ZoomInfo session token may have expired. Disconnect and reconnect the integration from the connectors store to re-authenticate.

What's Next

Start with a real task you'd normally do in ZoomInfo's UI. Build an account list, research a company before a call, or find contacts at a target account. Same data, accessed conversationally.

For a deeper walkthrough of specific workflows, see our guide on How to Build Audiences and Lists Inside Claude with ZoomInfo MCP. For the full tool reference, see the MCP Tools documentation.