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thinking-tools

v1.4.1

Metacognitive reasoning frameworks for careful decision-making. Includes Chesterton's Fence (investigate before removing), Pink Elephant (rewriting counterproductive negative instructions), Interview Mode (stop guessing after two rejected drafts and extract the user's own words), No Meat Proxy (rewrite a draft so the reader can relay it in their own words instead of forwarding it verbatim), and room for more thinking tools like pre-mortems, steelmanning, and first principles.

Claude Code4 Skills

By JT Sternberg5 GitHub starsUpdated 2 days ago

Directory evidence

Runtimes
Claude Code
Parsed components
4 skill or MCP entries
Source updated
Sep 21, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install thinking-tools for Claude Code

Installs for the current user
claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install thinking-tools-3@agent-plugin-marketplace

Paste and run these commands in a terminal with Claude Code. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/jtsternberg/claude-plugins

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/thinking-tools/.

Plugin files

plugins/thinking-tools/
├── .claude-plugin/plugin.json
├── skills/chestertons-fence/SKILL.md
├── skills/interview-mode/SKILL.md
├── skills/no-meat-proxy/SKILL.md
└── skills/pink-elephant/SKILL.md

Included Skills4

chestertons-fenceskills/chestertons-fence/SKILL.md

Use before removing, refactoring, or 'simplifying' code, config, or processes whose purpose isn't fully understood — or when someone says 'Chesterton's Fence'. Understand why it was built before tearing it down.

interview-modeskills/interview-mode/SKILL.md

Use when the user says 'interview me', 'interview mode', or 'stop guessing' — or when a second attempt at the same artifact (email, doc, plan, naming, UI copy, design) gets rejected or rewritten. Stop generating variants; interview the user and build from their own words.

no-meat-proxyskills/no-meat-proxy/SKILL.md

Rewrite what you are about to hand the user so they can say it to a teammate in their own words, without opening a file. Manual invocation only — /thinking-tools:no-meat-proxy (Codex: $thinking-tools:no-meat-proxy) or "no meat proxy". Applies to the chat reply AND any draft headed to other humans (PR comment, issue, Slack).

pink-elephantskills/pink-elephant/SKILL.md

Use when the user flags a 'pink elephant' — an instruction phrased as a prohibition ('do not X', 'never X', 'avoid X') that draws attention to the very behavior it forbids. Rewrites negative rules into positive directives.

Plugin manifests1

plugins/thinking-tools/.claude-plugin/plugin.json
{
  "name": "thinking-tools",
  "description": "Metacognitive reasoning frameworks for careful decision-making. Includes Chesterton's Fence (investigate before removing), Pink Elephant (rewriting counterproductive negative instructions), Interview Mode (stop guessing after two rejected drafts and extract the user's own words), No Meat Proxy (rewrite a draft so the reader can relay it in their own words instead of forwarding it verbatim), and room for more thinking tools like pre-mortems, steelmanning, and first principles.",
  "version": "1.4.1",
  "author": {
    "name": "JT Sternberg",
    "url": "https://github.com/jtsternberg"
  }
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[thinking-tools on Agent Plugins Marketplace](https://pluginsmp.com/plugins/thinking-tools-3)