Icp Gtm Sim — Testing skill for Claude Code

icp-gtm-sim

An agent skill that finds your **ICP** and validates your **GTM messaging** by testing copy against hundreds of simulated buyer personas.

Paste a landing page, cold email, launch post or pitch. The skill builds a factorial audience (role × company size × industry × revenue × geography…), has every persona react to the exact copy, and tells you:

• Who it lands with — the specific conjunction (e.g. growth leads at 11–50-person B2B SaaS companies under $1M revenue), specific enough to build a list against.
• What's holding it back — separated into wrong audience (fix the targeting) and wrong message (fix the copy or proof).
• What to do next — one real-world check and one message variant worth testing.

How it works

1. Take the brief. Your exact copy — plus a quick check for things that skew results (copy that names its own audience, a missing price, the channel).
2. Propose the audience. 4–5 filterable factors, every valid combination once, impossible companies dropped (a 5-person company with $100M revenue isn't a segment). You edit it in plain language: "drop manufacturing", "add funding stage", "only US".
3. Run it. Each persona scores relevance, clarity and trust on a 1.00–5.00 scale and picks an intent: ignore · reject · inspect details · self-serve trial · bring to team. Large runs are split into parallel batches.
4. Check before analysing. Flags flat dimensions, stereotyped responses and batch noise before any segment claim is made.
5. Report. A short answer, a segment table with n on every number, and the full CSV as an audit trail.

It can also compare two runs — two message variants, a re-test after a copy change, or results from another tool.

Install

**Any agent** — Claude Code, Codex, Cursor, GitHub Copilot and 75+ others, via [skills.sh](https://skills.sh):

npx skills add ResearchifyLabs/icp-gtm-sim

**Claude Code plugin** — inside Claude Code:

/pl