devil

devil is a skill for Claude Code, Codex from sidtheone/tarot-skills. It costs 180 tokens per session (1,841 once invoked), scanned A, original, no licence file.

An approach that identifies commitments to old tools, decisions, patterns, or plans that are no longer useful.

In plain words
What is it for?
Use it when deciding whether to replace legacy systems, stop projects, change tools, or abandon an outdated approach.
Why use it?
It helps teams recognize sunk costs, meaning past investments that should not determine future choices.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/sidtheone/tarot-skills/devil
Any agent
npx skills add sidtheone/tarot-skills --skill devil
Clone the repo
git clone --depth 1 https://github.com/sidtheone/tarot-skills

Made for: Claude Code, 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 devil

README.md
[![agentmods](https://agentmods.dev/badge/skills/sidtheone/tarot-skills/devil.svg)](https://agentmods.dev/skills/sidtheone/tarot-skills/devil)
Your own site
<a href="https://agentmods.dev/skills/sidtheone/tarot-skills/devil"><img src="https://agentmods.dev/badge/skills/sidtheone/tarot-skills/devil.svg" alt="Measured on agentmods" height="20"></a>
Per session 180 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,841 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00180 $0.01841
Opus 5 $0.00090 $0.00920
Sonnet 5 $0.00036 $0.00368
Haiku 4.5 $0.00018 $0.00184

Measured 5d ago against content hash 974e1be4f2b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

devil 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.

devil/SKILL.md · 91 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 91 lines · 180 tokens per session scan A 974e1be4f2b9

Subscribe to this mod's changes

devil is a skill published in the GitHub repository sidtheone/tarot-skills (2 stars, last pushed 5mo ago), with no licence file. It adds 180 tokens to every session and 1,841 once invoked, about $0.0009 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 2026-08-31.

Related

Other skills, from other repositories

polar-billing

This skill should be used when working on Polar billing system, Stripe integration, subscription lifecycle, checkout flows, or benefit provisioning.

fcakyon/claude-codex-settings · 29 tokens

simplify

This skill should be used when the user asks to "simplify", "clean up the diff", "run simplify", "simplify the changes", "review changed code for cleanup", explicitly invokes "/simplify", or asks to "commit without simplify", "skip simplify for this commit", or "commit this but skip simplify". Reviews changed code…

fcakyon/claude-codex-settings · 97 tokens

ultralytics-platform

This skill should be used when user asks to "upload my model to Ultralytics Platform", "push this run to the platform", "upload a dataset to platform", "download a dataset from platform", "search platform datasets", "start cloud training", "train on platform GPUs", "export a model on platform", "deploy a model…

fcakyon/claude-codex-settings · 112 tokens

dokploy-deploy

This skill should be used when user asks to "deploy with Dokploy", "use Dokploy Cloud", "manage self-hosted Dokploy", "deploy Docker Compose on Dokploy", "manage Dokploy databases", "configure Dokploy domains", or "look up Dokploy CLI commands".

fcakyon/claude-codex-settings · 63 tokens

review-overleaf

This skill should be used when user asks to "fetch overleaf review comments", "address overleaf reviews", "apply overleaf comments", "review my overleaf paper", "sync overleaf feedback to local", "what comments are on my overleaf doc", or wants to act on Overleaf reviewer feedback in a local git-tracked LaTeX repo.

fcakyon/claude-codex-settings · 77 tokens

openai-frontend-design

Use for new frontend applications, dashboards, games, creative websites, hero sections, and visually driven UI from scratch, or when the user explicitly asks for a redesign/restyle/modernization. Builds from clean, airy, high-taste, readable image-generated concept design with section-specific references, faithful…

fcakyon/claude-codex-settings · 71 tokens