moon

moon is a skill for Claude Code, Codex from sidtheone/tarot-skills. It costs 145 tokens per session (1,859 once invoked), scanned A, original, no licence file.

A testing guide that looks for failure paths, unusual cases, and scenarios where the intended behavior breaks.

In plain words
What is it for?
Use it to explore edge cases, error handling, security risks, and other situations that ordinary tests may miss.
Why use it?
It helps counter the habit of describing only the happy path—the normal situation where everything works.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to explore edge cases, error handling, security risks, and other situations that ordinary tests may miss.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sidtheone/tarot-skills/moon
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 sidtheone/tarot-skills --skill moon
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 moon

README.md
[![agentmods](https://agentmods.dev/badge/skills/sidtheone/tarot-skills/moon/github.svg)](https://agentmods.dev/skills/sidtheone/tarot-skills/moon)
Your own site
<a href="https://agentmods.dev/skills/sidtheone/tarot-skills/moon"><img src="https://agentmods.dev/badge/skills/sidtheone/tarot-skills/moon/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 moon

Your own site · 80×15
<a href="https://agentmods.dev/skills/sidtheone/tarot-skills/moon"><img src="https://agentmods.dev/badge/skills/sidtheone/tarot-skills/moon.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 145 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,859 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 $0.00145 $0.01859
Opus 5 $0.00072 $0.00929
Sonnet 5 $0.00029 $0.00372
Haiku 4.5 $0.00015 $0.00186

Measured 9d ago against content hash 9e1013418844, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

moon 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 9d 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.

moon/SKILL.md · 92 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. 9d ago First seen · 92 lines · 145 tokens per session scan A 9e1013418844

Subscribe to this mod's changes

moon is a skill published in the GitHub repository sidtheone/tarot-skills (2 stars, last pushed 5mo ago), with no licence file. It adds 145 tokens to every session and 1,859 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 2026-08-31.

Related

Other skills, from other repositories

lov-fix-until-no-error

A verification-focused debugging workflow that repeatedly runs specified checks, fixes the highest-priority failure, and stops when the checks pass or a genuine external blockage remains.

lovstudio/skills · 48 tokens

launch-check

Run a pre-demo/pre-launch audit of the app - test data, broken screens, missing error states, brand consistency. Use when asked to 'demo check', 'launch check', 'pre-demo audit', 'check before user interview', 'audit before demo'.

craigcossairt/trellis · 55 tokens

audio-verification

Verify and debug synthesized audio (Web Audio API) by rendering it offline and measuring the samples, instead of guessing from code or claiming it works untested. Use whenever building, changing, or reviewing UI sound effects, tones, synths, or any AudioContext graph — and especially when sound is reported as…

AkshitIreddy/agent-skills · 117 tokens

tdd

TDD workflow - red-green-refactor per docs/methodology/tdd.md. Use when asked to '/tdd', 'TDD workflow', 'red-green-refactor', 'test-first development', 'write the failing test first'.

craigcossairt/trellis · 51 tokens

loop-engineering

Use when designing, orchestrating, or executing autonomous multi-agent coding loops with financial budget caps, minimal fixes, and continuous dev-QA gates.

imMamdouhaboammar/loop-engineering-skill · 33 tokens

playwright-qa

Drive the running app with Playwright to verify UI work — act, screenshot, read the screenshot, decide. Use whenever a change is visible or interactive, whenever a UI bug is reported, and instead of reasoning about what the UI probably does.

AkshitIreddy/agent-skills · 54 tokens