Is the Q Thinking Chain skill free?

Yes. The skill itself is free from kju4q/q-claude-skills. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Q Thinking Chain SkillProof Score?

8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 3/5.

How do I install Q Thinking Chain?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Q Thinking Chain with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Q Thinking Chain

Three named reasoning techniques -- reframe past the safe answer, destroy an idea, track competing hypotheses.

by kju4q · kju4q/q-claude-skills

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.8/10
Tested: Jul 15, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · e08e01f

Ran the adversarial-room technique live on a real pitch (an AI Instagram-caption SaaS for photographers): it isolated one falsifiable fatal assumption ('photographers find captions painful enough to pay for') and named a concrete competitor response, a sharper and more mechanistically faithful result than a hedged pros/cons baseline. The parent repo's own README 'What's inside' catalog never mentions this skill (listed internally as 'Claude Chain') at all, so a user browsing the collection would not discover it exists.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 9/10
Docs & honesty 3/5

What Q Thinking Chain does

A structured-thinking skill bundling three techniques: a three-layer 'reasoning layer' that forces a committed answer past the safe default, an 'adversarial room' that isolates the single fatal assumption behind an idea, and a 'belief updater' that tracks three competing hypotheses as evidence arrives. Triggers on requests for a genuine opinion, a stress-test or critique of a plan, or decision support under uncertainty.

How to install Q Thinking Chain

git clone https://github.com/kju4q/q-claude-skills.git
cd q-claude-skills
mkdir -p ~/.claude/skills
cp -r skills/claude-chain ~/.claude/skills/q-thinking-chain  # repo folder is named claude-chain; frontmatter name is q-thinking-chain, rename on copy

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Q Thinking Chain

/q-thinking-chain Three named reasoning techniques -- reframe past the safe answer, destroy an idea, track competing hypotheses.

It also activates on plain-language prompts like these:

stress test my startup pitch and find the one fatal assumption
give me your real opinion here, not the safe diplomatic answer
track competing explanations for this bug as new evidence comes in

Frequently asked questions

Is the Q Thinking Chain skill free?: Yes. The skill itself is free from kju4q/q-claude-skills. SkillProof publishes the install command and an independent test verdict at no cost.
Does Q Thinking Chain work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 15, 2026. Verdict: Tested · Works. Ran the adversarial-room technique live on a real pitch (an AI Instagram-caption SaaS for photographers): it isolated one falsifiable fatal assumption ('photographers find captions painful enough to pay for') and named a concrete competitor response, a sharper and more mechanistically faithful result than a hedged pros/cons baseline. The parent repo's own README 'What's inside' catalog never mentions this skill (listed internally as 'Claude Chain') at all, so a user browsing the collection would not discover it exists.
What is the Q Thinking Chain SkillProof Score?: 8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 3/5.
How do I install Q Thinking Chain?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Q Thinking Chain with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.