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icp-prompt-builder

icp-prompt-builder is a skill for Claude Code from AlexisMarasigan/coldoutboundskills. It costs 101 tokens per session (2,174 once invoked), scanned A, a copy of icp-prompt-builder, MIT.

An interactive tool for creating and refining a prompt that judges whether companies match a client's ideal customer profile, or ICP. It tests the prompt on small batches before applying it to a larger company list.

In plain words
What is it for?
Use it after collecting a company list to evaluate sample batches, compare scores with human decisions, refine the prompt, and then qualify companies at scale.
Why use it?
It helps catch bad qualification rules before spending money or time processing thousands of companies. Feedback across repeated batches makes the prompt closer to the user's own judgment.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents; mentions Claude Code.

Part of the coldoutboundskills plugin — 28 skills shipped together

not rated 5repo 6mo ago A scan 101 tokens copy · 100% MIT

Good fit Use it after collecting a company list to evaluate sample batches, compare scores with human decisions, refine the prompt, and then qualify companies at scale.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/alexismarasigan/coldoutboundskills/icp-prompt-builder
View source ↗ AlexisMarasigan/coldoutboundskills
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add AlexisMarasigan/coldoutboundskills --skill icp-prompt-builder
Clone the repo
git clone --depth 1 https://github.com/AlexisMarasigan/coldoutboundskills

Made for: Claude Code.

Or install coldoutboundskills, the plugin that ships this one along with the rest of its 28 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for icp-prompt-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/alexismarasigan/coldoutboundskills/icp-prompt-builder/github.svg)](https://agentmods.dev/skills/alexismarasigan/coldoutboundskills/icp-prompt-builder)
Your own site
<a href="https://agentmods.dev/skills/alexismarasigan/coldoutboundskills/icp-prompt-builder"><img src="https://agentmods.dev/badge/skills/alexismarasigan/coldoutboundskills/icp-prompt-builder/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for icp-prompt-builder

Your own site · 80×15
<a href="https://agentmods.dev/skills/alexismarasigan/coldoutboundskills/icp-prompt-builder"><img src="https://agentmods.dev/badge/skills/alexismarasigan/coldoutboundskills/icp-prompt-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 101 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,174 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00101 $0.02174
Opus 5.5 $0.00040 $0.00870
Sonnet 5.5 $0.00020 $0.00435
Haiku 4.5 $0.00010 $0.00217

Measured 2mo ago against content hash eaec0306b7a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

icp-prompt-builder scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to icp-prompt-builder — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/icp-prompt-builder/SKILL.md · 206 lines

How it starts

The opening of the file, as written. The whole thing — 206 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ICP Prompt Builder

Before you pay to pull 5,000 companies, tune a qualification prompt on 10-50 of them. This skill walks you through the iterative loop.

Why this exists

List-builder skills (DiscoLike, Blitz, Prospeo, Google Maps) return COMPANIES, but they don't know whether those companies match your ICP. If your list-builder returns 5,000 companies and 80% are wrong fits, you'll waste money enriching them for emails that go nowhere.

The fix: build an AI qualification prompt BEFORE scaling. Pull 10 companies, have the prompt score them, compare to your judgment, refine, repeat. Once the prompt agrees with you 2 rounds in a row with zero corrections, lock it in and apply it at scale.

Always uses Task sub-agents (no API key)

This skill runs entirely inside Claude Code via the Task tool. No Anthropic SDK calls, no OpenAI calls — Claude Code does the scoring itself. This is intentional:

  • No extra API spend. Uses your Claude Code plan.
  • No key management. Works out of the box.
  • Scaleable within reason. For 20-100 evaluations, parallel Task sub-agents batch 10-20 companies per agent.

At very large scale (5,000+ companies per batch), you may want to export the tuned prompt and run it through the OpenAI / Anthropic API with parallelism for speed. But TUNING happens inside Claude Code.

The loop (8 steps)

Step 1 — Gather ICP context

Claude asks the user (or reads client-profile.yaml from /icp-onboarding):

  • Website of the client selling (to scrape for context)
  • Who IS a good customer? What makes them a good fit?
  • Who is NOT a good customer? What disqualifies them?
  • Any specific signals? (B2B only, revenue range, tech stack, hiring status, recent fundraise, etc.)
  • Any HARD disqualifiers? (competitor domains, existing customer domains, certain industries/geographies)

Step 2 — Select 10 test companies

Pull 10 companies from the list-builder output:

  • Mix likely-good and likely-bad fits
  • Variety in industry, size, location
  • Each company needs at minimum: domain, company_name, industry, headcount, description
  • Richer fields (Clay-derived: Business Type, Scale Scope, Revenue) make scoring better

Read the full file on GitHub · 206 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 206 lines · 101 tokens per session scan A eaec0306b7a2

Subscribe to this mod's changes

icp-prompt-builder is a skill published in the GitHub repository AlexisMarasigan/coldoutboundskills (5 stars, last pushed 6mo ago), licensed MIT. It adds 101 tokens to every session and 2,174 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to icp-prompt-builder, differing in 6 lines, and is treated as a copy.

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Related

icp-prompt-builder compared with skills from other repositories

icp-prompt-builder next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
icp-prompt-builderAlexisMarasigan/coldoutboundskillsSkill56mo agoMITA101Claude Code
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