Founder's GTM

Founder's GTM

3 Claude GTM Prompts EVERY Founder Needs

Jasper Vanu | Claude for GTM's avatar
Jasper Vanu | Claude for GTM
Apr 23, 2026
∙ Paid

Last week I spoke with an agency owner who had spent two hours tweaking a prompt, trying to get Claude Code to produce a better prospect list.

Different phrasing, different structures, longer instructions. But nothing really worked.

I asked him what he had loaded in before the prompt ran. He looked at me blankly.

There is a difference between prompt engineering, which is about phrasing the instruction better, and context engineering, which is about what your LLM knows before you type a word: Your ICP, your closed-won deals, your signal criteria.

When that context is in place, the prompt becomes almost secondary. Four lines produce better output than forty, because the context sitting underneath them is doing the real work.

The three prompts I’m sharing today are starting points, not a system, yet.

Each one covers a different layer of GTM: finding the right place at the right moment, finding the right person, and writing the right message.

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1. The signal check: right place, right time

Requires:

  • a company name/domain

  • your best existing customers to seed from

  • the specific pain signals you are looking for

  • a rough sense of your ICP and breaking point

Before you search for new companies, start with what you already know. Your best customers are the benchmark.

The goal is to find companies in the same situation those customers were in when they first bought, and then confirm the timing is right by checking for active pain signals right now.

You can learn everything about it in the Account List Building Guide.

Example input:

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