What is thinking-tools?

A set of methods for examining ideas from different angles, spotting bias, and consulting Codex for another view.

Use it to analyse difficult questions, challenge an argument, reduce personal bias, or ask Codex for a second opinion.

It helps expose assumptions and one-sided reasoning before you decide or act.

thinking-tools — Plugin by umputun

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.

Claude Code

/plugin marketplace add umputun/cc-thingz

agentmods

npx agentmods add plugins/umputun/cc-thingz/thinking-tools

Clone the repo

git clone --depth 1 https://github.com/umputun/cc-thingz

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

thinking-tools 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 2d 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.

plugins/thinking-tools/.claude-plugin/plugin.json · 12 lines

What it actually says

{
  "name": "thinking-tools",
  "description": "Analytical thinking tools - dialectic analysis, bias elimination, codex consultation",
  "version": "1.2.2",
  "author": {
    "name": "Umputun"
  },
  "homepage": "https://github.com/umputun/cc-thingz",
  "repository": "https://github.com/umputun/cc-thingz",
  "license": "MIT"
}

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.

2d ago First seen · 12 lines scan A 23efa67c7fb0

Subscribe to this mod's changes

thinking-tools is a plugin published in the GitHub repository umputun/cc-thingz (460 stars, last pushed 8d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.

claude-code claude-code-plugin marketplace plugin

thinking-tools

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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