How to Find Prospects for Cold Email With Claude

Paste one prompt into Claude with LeadOcean connected and get a sized, mailable prospect list before you spend a single record. Connect the server at https://api.leadocean.io/mcp first. Setup is on the MCP page.

The prompt

Find cold email prospects: sales leaders at US software companies
with 51-200 employees.
1. Call leadocean_list_enum_values for industry, job_level, job_function
   and employee_range and use the exact strings.
2. Call leadocean_count_leads with jobLevel VP and Director,
   jobFunction Sales & Business Development, industry Software Development,
   employeeRange 51-200 and country US.
3. Tell me the count and the filters you used.
4. Do not call leadocean_search_leads until I say go.

What it resolves to

Enum values are exact strings, which is why step 1 looks them up. Free lookups, no records spent. Industry has 534 values, so Claude must pick from the list rather than guess a label.

How many match

4,665 mailable people matched on 1 October 2026. Filters: jobLevel VP or Director, jobFunction Sales & Business Development, industry Software Development, employeeRange 51-200, country US.

Mailable means verified, catch_all_valid or catch_all, the count_leads default. The count is free. Read email_status on each row before you send, because LeadOcean does not refund bounces. The count covers the whole filter set, so a tighter title or a second industry string changes the number. Run the count again after each change, then say go.

What you get back

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

Variations

• Change the size line to "employeeRange 201-500" to reach mid-market sales leaders.
• Swap the function for "Advertising & Marketing" to prospect marketing heads instead.
• Change country to GB and ask Claude to count again before searching.

Records it spends

The count and enum lookups are 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

• Generate leads with cold email
• Find an email address from a website
• Find work emails in Claude

More prompts live in the prompts hub.