list-experiment

list-experiment is a skill for Codex from scdenney/open-science-skills. It costs 148 tokens per session (3,944 once invoked), scanned A, original, no licence file.

A workflow for designing and diagnosing list experiments, also called the item count technique. This survey method estimates responses to a sensitive statement by comparing groups that receive lists with different numbers of items.

In plain words
What is it for?
Use it to design a list experiment, check its assumptions and implementation, and diagnose problems in the resulting data or analysis.
Why use it?
It helps plan the study and detect design or analysis problems that could make the estimated result unreliable.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it to design a list experiment, check its assumptions and implementation, and diagnose problems in the resulting data or analysis.

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Install with agentmods
npx agentmods add skills/scdenney/open-science-skills/list-experiment
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 scdenney/open-science-skills --skill list-experiment
Clone the repo
git clone --depth 1 https://github.com/scdenney/open-science-skills

Made for: Codex.

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 list-experiment

README.md
[![agentmods](https://agentmods.dev/badge/skills/scdenney/open-science-skills/list-experiment/github.svg)](https://agentmods.dev/skills/scdenney/open-science-skills/list-experiment)
Your own site
<a href="https://agentmods.dev/skills/scdenney/open-science-skills/list-experiment"><img src="https://agentmods.dev/badge/skills/scdenney/open-science-skills/list-experiment/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 list-experiment

Your own site · 80×15
<a href="https://agentmods.dev/skills/scdenney/open-science-skills/list-experiment"><img src="https://agentmods.dev/badge/skills/scdenney/open-science-skills/list-experiment.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 148 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,944 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 unknown No closer match found 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 $0.00148 $0.03944
Opus 5 $0.00074 $0.01972
Sonnet 5 $0.00030 $0.00789
Haiku 4.5 $0.00015 $0.00394

Measured 6d ago against content hash c98e0dbf7338, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

list-experiment 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 6d 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.

codex/list-experiment/SKILL.md · 96 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

2 files beside SKILL.md 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. 6d ago Changed · +134 tokens per session c98e0dbf7338
  2. 10d ago First seen · 96 lines · 14 tokens per session scan A 63f23ff66b92

Subscribe to this mod's changes

list-experiment is a skill published in the GitHub repository scdenney/open-science-skills (55 stars, last pushed today), with no licence file. It adds 148 tokens to every session and 3,944 once invoked, about $0.0007 per session on Opus 5. 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 2026-08-30.