Size your market & count the buyers inside

Claude

The skill plays the role of a RevOps analyst inside Claude. It turns your ICP description into hard numbers: how many companies match, how many buyers sit inside them, and which filter moves the number most. Every count comes from FullEnrich search, so sizing the market costs 0 credits. You leave with the number and the exact filter set behind it, ready to pull the list later.

Download skill

1. Connect the FullEnrich MCP to Claude

This skill needs only one MCP active in your Claude workspace:

  • FullEnrich MCP at https://mcp.fullenrich.com/mcp

New to MCPs? Follow the FullEnrich MCP setup guide.

2. Install the skill in Claude

Click Download Skill above to grab the skill .zip file, then install it in Claude:

  • Open Customize in Claude

  • Click Create new skill

  • Click the + button at the top

  • Choose Create Skill

  • Pick Upload a skill and select the .zip you just downloaded

3. Describe your ICP

Tell Claude who you sell to, in plain words. Examples:

  • "How many B2B SaaS companies in the US have 200-1000 employees?"

  • "Size the mid-market fintech market in North America"

  • "How many Heads of RevOps are there at companies like ours in France?"

The skill translates it into FullEnrich filters (industry, HQ, headcount, revenue, technologies) and shows them as a short table so you can add or exclude anything before it counts.

4. It counts the accounts and shows which filter matters

The skill reads the total number of matching companies, then re-runs the count once per filter with that filter removed. You see exactly which filter defines your market, and how much it grows if you loosen it.

5. It counts the buyers inside

Give the buyer persona (title, seniority, team). The skill counts the matching people inside those companies and gives you the number of buyers per account, so you know the real size of the market in people, not only in logos.

6. Get the numbers and the reusable filter set

  • Accounts and buyers, with a breakdown by headcount band or country

  • 5 sample accounts so you can sanity-check the match

  • The exact filter set as JSON, ready to export the full list later

Built-in safeguards: every count runs on free search, so sizing spends 0 credits. Technology data is sparse, so a count that uses a tech filter is always shown with and without it and presented as a floor. Large totals are rounded and labelled as approximate. Exporting the list costs 0.25 credit per company and only happens after you say yes.

What is next? the skill offers to export the full account list, score those accounts against your best customers, or find the buyers and enrich their emails.

Troubleshooting

Claude says the FullEnrich MCP is not connected

Open Claude settings and connect https://mcp.fullenrich.com/mcp. The skill resumes on the next message.

The count drops sharply when I add a technology

Technology detection only covers part of the database, so a tech filter can cut the count because of missing data rather than a small market. Use the count without the tech filter as your market size.

An industry returns 0 companies

Industry values must match the FullEnrich list exactly ("SaaS" is not an industry). The skill maps your words to the right values, tell it which industries you meant if the mapping looks off.

The buyers-per-account ratio looks too low

This usually means missing people data, not a tiny buying team. Ask the skill to widen the seniority or add related titles.

The totals look rounded

Very large counts come back rounded (for example 1,206,000). The skill labels them as approximate.

Can I get the list itself?

Yes. The skill offers to export the full account list at 0.25 credit per company, and only does it after you confirm the cost.

If we can't find contact data, no one else can.

  • 50 free credits
  • No credit card required
  • GDPR & CCPA compliant
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