inversion

inversion is a skill for Claude Code, Codex from jackjin1997/ClawForge. It costs 0 tokens per session (1,755 once invoked), scanned A, original, no licence file.

A decision-making technique that examines how to guarantee failure before choosing how to succeed. It is based on the idea of reversing a problem to reveal risks and mistakes.

In plain words
What is it for?
Use it to assess product ideas, career plans, health goals, strategy, or brainstorming when you feel stuck.
Why use it?
It helps when the goal is vague but the ways to fail are easier to identify.

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 assess product ideas, career plans, health goals, strategy, or brainstorming when you feel stuck.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jackjin1997/clawforge/inversion
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 jackjin1997/ClawForge --skill inversion
Clone the repo
git clone --depth 1 https://github.com/jackjin1997/ClawForge

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 inversion

README.md
[![agentmods](https://agentmods.dev/badge/skills/jackjin1997/clawforge/inversion/github.svg)](https://agentmods.dev/skills/jackjin1997/clawforge/inversion)
Your own site
<a href="https://agentmods.dev/skills/jackjin1997/clawforge/inversion"><img src="https://agentmods.dev/badge/skills/jackjin1997/clawforge/inversion/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 inversion

Your own site · 80×15
<a href="https://agentmods.dev/skills/jackjin1997/clawforge/inversion"><img src="https://agentmods.dev/badge/skills/jackjin1997/clawforge/inversion.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,755 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 $0.00000 $0.01755
Opus 5.5 $0.00000 $0.00702
Sonnet 5.5 $0.00000 $0.00351
Haiku 4.5 $0.00000 $0.00176

Measured 1mo ago against content hash 884cf10213ba, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

inversion 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 1mo 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.

skills/inversion/SKILL.md · 104 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. 1mo ago First seen · 104 lines · 0 tokens per session scan A 884cf10213ba

Subscribe to this mod's changes

inversion is a skill published in the GitHub repository jackjin1997/ClawForge (13 stars, last pushed 4mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 1,755 tokens. 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.

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