experiment-coach

experiment-coach is a plugin for Claude Code from growthack88/growth-marketing-os. Its manifest loads nothing; the 4 skills it bundles cost 601 tokens per session together, scanned A, original, MIT.

A chat-based guide for testing product ideas before launch and measuring experiments after launch. It covers customer interviews, smoke tests, fake-door tests, pre-sales, sample sizes, decision rules, and A/B test results in Arabic and English.

In plain words
What is it for?
Use it to validate a product, feature, offer, price, message, or channel, then record and review growth experiments.
Why use it?
It helps replace guesses about demand or growth with feedback and pre-set criteria for continuing, changing, or stopping an idea. It avoids making up industry benchmarks.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to validate a product, feature, offer, price, message, or channel, then record and review growth experiments.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add growthack88/growth-marketing-os
/plugin install experiment-coach
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.

Clone the repo
git clone --depth 1 https://github.com/growthack88/growth-marketing-os

Made for: Claude Code.

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 experiment-coach

README.md
[![agentmods](https://agentmods.dev/badge/plugins/growthack88/growth-marketing-os/experiment-coach/github.svg)](https://agentmods.dev/plugins/growthack88/growth-marketing-os/experiment-coach)
Your own site
<a href="https://agentmods.dev/plugins/growthack88/growth-marketing-os/experiment-coach"><img src="https://agentmods.dev/badge/plugins/growthack88/growth-marketing-os/experiment-coach/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 experiment-coach

Your own site · 80×15
<a href="https://agentmods.dev/plugins/growthack88/growth-marketing-os/experiment-coach"><img src="https://agentmods.dev/badge/plugins/growthack88/growth-marketing-os/experiment-coach.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 4 skills cost 601 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

experiment-coach 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 5d 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.

.claude-plugin/marketplace.json#experiment-coach · 12 lines

What it actually says

{
  "name": "experiment-coach",
  "description": "Experiment Coach: validate ideas before launch (interviews, smoke tests, fake doors, pre-sales) and run growth experiments after it (pass lines, sample sizes, A/B readouts, experiment log), in Arabic and English, with no invented benchmarks.",
  "source": "./",
  "strict": false,
  "skills": [
    "./skills/experiment-coach",
    "./skills/benchmark-analyst",
    "./skills/funnel-decomposition",
    "./skills/community/ab-testing"
  ]
}
Contents

What it installs

The manifest is a name and a version. 4 skills travel with it, and installing the plugin installs all of them — 601 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside marketplace.json#experiment-coach in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 5d ago First seen · 12 lines scan A aec305f1ae7a

Subscribe to this mod's changes

experiment-coach is a plugin published in the GitHub repository growthack88/growth-marketing-os (120 stars, last pushed 6d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-11.

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