Claude Prompt: Find Founders at Companies Using HubSpot

Paste one prompt into Claude, or any MCP client, with LeadOcean connected and get a sized list of founders at companies whose website runs HubSpot. Connect https://api.leadocean.io/mcp first. Setup is on the MCP page.

The prompt

Find founders at US companies whose website runs HubSpot.
1. Call leadocean_count_leads with technologies HubSpot, title
   Founder and Co-Founder, and country US.
2. Tell me the count and the filters you used.
3. Do not call leadocean_search_leads until I say go.

What it resolves to

The technologies filter matches a technology detected on the company website. It is a free-text name, not a closed list. The title filter matches keywords in the job title, so "Founder" also catches titles such as "Founder and CEO".

How many match

51,312 mailable people matched on 2 October 2026. Filters: technologies HubSpot, title Founder or Co-Founder, country US.

Mailable means verified, catch_all_valid or catch_all, the count_leads default. The count is free. Technology data covers about 7.8M crawled sites, so this is a floor, not every HubSpot company. The largest industry is Software Development at 9,056, and 13,846 sit at companies with 11-50 employees.

What you get back

Search rows carry the fields below. These are placeholder values, not real records.

Variations

• Add "only companies with employeeRange 11-50 and 51-200" to target smaller teams that already run HubSpot.
• Add "industry Software Development" and count again to see the SaaS slice.
• Swap the country line for "continent Europe" to size the same list outside the US.

Records it spends

leadocean_count_leads is free. leadocean_search_leads costs 1 record per person returned, so a limit of 25 costs 25 records. Free gives you 1,000 records one-off with no card. Pro is $499 a month. See pricing.

Related prompts

• Find IT directors at HubSpot users
• Find HR directors at HubSpot users
• Find CTOs at HubSpot users

More prompts live in the prompts hub.