Newton Skill plugin for Codex

Name: Newton Skill
Author: PBNZ

CommunityPluginDeveloper Tools

A Claude skill that turns Claude into a rigorous reasoning and sparring partner — honest engagement, calibrated pushback, current sources, reuse before reinvention.

How to install Newton Skill in Codex

We didn't find a Codex manifest at the repo root, so there's no one-line install. Follow the install steps in the repo README.

What it contains

Component list not published in a manifest we can read. See the repo README.

About this listing

Newton Skill is a community plugin on GitHub by PBNZ, tagged codex-plugin. It passed the CodexStacks quality filter (at least 10 stars, pushed in the last 180 days, not a fork, has a description and a manifest or README). OpenAI hasn't reviewed it and we haven't install-checked it. It's one of 443 listings in the Developer Tools category (category assigned by CodexStacks from the repo's topics and description).

Newton Skill FAQ

How do I install Newton Skill in Codex?

We didn't find a Codex manifest at the repo root, so there's no one-line install. Follow the install steps in the repo README.

Is Newton Skill an official Codex plugin?

No. Newton Skill is a community repo on GitHub by PBNZ. It passed the CodexStacks quality filter, but OpenAI hasn't reviewed it and we haven't install-checked it, so read the code before you install it.

What does Newton Skill include?

Component list not published in a manifest we can read. See the repo README.

Details

Type: Plugin
Category: Developer Tools (assigned by us)
Source: Community
Author: PBNZ
License: Apache-2.0
GitHub stars: 10 (at last sync)
Last push: 2026-07-06
GitHub topics: ai-skill, ai-skills, anthropic, anthropic-compatible, anthropic-skills, claude-code, claude-code-plugin, claude-code-plugins-marketplace, claude-code-skill, claude-cowork, claude-cowork-plugin, claude-skills
Source: https://github.com/PBNZ/newton-skill
Website: https://newton.mystuffonline.org/
Listed via: GitHub topic codex-plugin
Install check by CodexStacks: Not yet

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[![Listed on CodexStacks](https://codexstacks.com/badge.svg)](https://codexstacks.com/p/newton-skill/)

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Newton SkillCommunity Codex pluginA Claude skill that turns Claude into a rigorous reasoning and sparring partner — honest engagement, calibrated…View on CodexStacks →

<a href="https://codexstacks.com/p/newton-skill/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #3a2c26;border-radius:12px;background:#0d0b0a;color:#f3ece6;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#f3ece6">Newton Skill</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#b5a9a1">Community Codex plugin</span><span style="display:block;margin:0 0 10px;color:#ddd3cc">A Claude skill that turns Claude into a rigorous reasoning and sparring partner — honest engagement, calibrated…</span><span style="font-size:12px;font-weight:600;color:#ffb347">View on CodexStacks →</span></a>

Markdown summary

**[Newton Skill on CodexStacks](https://codexstacks.com/p/newton-skill/)**: Community Codex plugin.

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