Claude can find direct phone numbers for your leads. Real ones. Verified ones. And it does this from your chat window without any extra tools.
This guide shows the exact workflow from the video. You will build a list of 100 finance companies, extract 119 C-suite executives, and enrich phone numbers for all of them in one conversation. 31 direct phone numbers came back. That is what 26% looks like for senior finance executives.
What Is B2B Contact Data Enrichment?
B2B contact data enrichment is the process of adding verified phone numbers, emails, or other contact details to a list of leads you already have. You start with names and companies. Enrichment adds the contact information you need to reach those people.
The traditional approach requires separate tools for each step. You use one tool to research companies, another to find executives, and a third to find phone numbers. Then you manually combine everything.
The Claude + Scalelist MCP workflow does all three in one conversation. Claude handles research and extraction. Scalelist handles phone number verification. You write prompts in plain English.
What You Need to Get Started
You need two accounts:
- A Claude account. A free account allows one custom connector. If you already use another connector, you will need Claude Pro at $20 per month.
- A Scalelist account. Sign up at scalelist.com. New accounts receive free credits.
You also need to connect Scalelist to Claude. This is a one-time setup that takes under 4 minutes.
Setup: Connect Scalelist to Claude
Step 1. In your Scalelist dashboard, click API in the left panel. Click the blue New Key button. Copy the API key.
Step 2. Open Claude. Click your name in the bottom left. Go to Settings, then Connectors. Scroll down and click Add Custom Connector.
Step 3. Name it Scalelist. Paste the MCP URL from the Scalelist documentation. After the equals sign at the end of the URL, paste your API key. Click Add.
Step 4. When you return to the chat, a permission prompt may appear. Select Always Allow so Claude can call Scalelist without asking each time.
Verify the connection: Ask Claude: “Are you connected to my Scalelist MCP?” Claude will confirm and list all available Scalelist tools.
How to Find Phone Numbers for C-Suite Executives: Step by Step
The workflow from the video runs in three stages inside a single Claude conversation.
Stage 1: Build a Target Company List
Ask Claude to compile a list of companies in your target market. In the video, the prompt was: find the top 100 finance companies in Chicago.
Claude pulls this from its training data. No Scalelist credits are used. This stage is free.
Claude may offer to find contacts or phone numbers immediately. Ignore that offer at this stage. You want a clean company list first.
Stage 2: Extract C-Suite Executives
Ask Claude to identify the C-suite executives for those companies. Specify the columns you want: first name, last name, job title, company name, company website, and company type.
Claude builds a structured spreadsheet. Claude may again try to use Scalelist to find executives or emails. Deny this request. You want Claude’s knowledge base only at this stage. The goal is a clean contact list before any enrichment runs.
In the video, this produced 119 C-suite executives from 80 companies.
Stage 3: Enrich Phone Numbers with Scalelist
Now ask Claude to find direct phone numbers for every contact. Ask it to add two columns: phone number and phone status (found or not found).
A permission prompt will appear asking Claude to enrich phone numbers in bulk. Click Always Allow.
Scalelist processes all contacts. Claude adds the phone number and status to each row in the spreadsheet.
What the Results Looked Like
119 C-suite finance executives were enriched for phone numbers:
- 31 direct phone numbers found (26% hit rate)
- 88 contacts had no phone number on record (74%)
- Not found = zero credits charged
Claude noted that this hit rate is typical for senior finance executives. Their personal contact information is heavily guarded and often not available in public databases.
A 26% hit rate for this audience is a reasonable baseline. Industries with lower privacy norms will see higher rates.
Why Hit Rates Vary by Seniority and Industry
Not all phone numbers are equally findable. Several factors affect hit rate.
Seniority level matters. C-suite executives at large finance firms actively guard their direct lines. Mid-level managers at smaller companies are more findable.
Industry matters. Finance, legal, and government contacts have lower hit rates. Technology, sales, and marketing contacts have higher ones.
Company size matters. Executives at large enterprises often have their contact information behind gatekeepers. Startup founders are more accessible.
The Scalelist pricing model accounts for this. You only pay for phone numbers that are found. Contacts with no matching number cost nothing. You can enrich a list of 500 executives and pay only for the 100 or 200 that return a result.
Frequently Asked Questions
Why should I deny Scalelist access during the executive extraction stage?
Building your contact list using Claude’s knowledge base first keeps the two steps separate. You get a clean, complete list of executives before any enrichment runs. This avoids partial enrichment and gives you better control over the quality of your starting data.
What does “directly found” mean for a phone number?
Scalelist returns verified direct dials. These are personal or direct office numbers linked to the executive, not main company switchboard lines. The number is confirmed as real and active at the time of enrichment.
Is a 26% hit rate considered good?
For C-suite finance executives in major cities, 26% is expected. Senior leaders in finance actively limit their public contact availability. For other industries or seniority levels, hit rates can reach 60-80%.
Does the MCP workflow work for emails too?
Yes. The same Claude + Scalelist MCP setup finds and verifies emails. You use a slightly different prompt and Scalelist returns email addresses with Valid, Risky, or Not Found status.
How much does phone number enrichment cost?
Scalelist charges per phone number found. Contacts with no matching number cost nothing. Check your Scalelist dashboard for current credit pricing.
Conclusion
Claude can find direct phone numbers for your B2B leads. The setup takes under 4 minutes. The enrichment runs in one conversation.
You research companies, extract executives, and find phone numbers all without switching tools. You only pay for results. Missing numbers cost nothing.
31 direct phone numbers from 119 C-suite finance executives. That is what this workflow delivers in a single chat.
Create your Scalelist account, connect it to Claude, and run your first enrichment today.
