mary-midgley

mary-midgley is a skill for Claude Code, Codex from K-Dense-AI/mimeographs. It costs 125 tokens per session (1,159 once invoked), scanned A, original, MIT.

An ethics and philosophy guide based on Mary Midgley, a British moral philosopher. It uses a broad view of humans as social animals living in nature and questions explanations that reduce everything to one cause or one scientific model.

In plain words
What is it for?
Use it to examine animal ethics, environmental policy, the limits of science, human behavior, or arguments that describe people as machines or as driven by a single instinct.
Why use it?
It helps expose misleading metaphors and overly narrow explanations of people, animals, and the environment. It brings moral, biological, social, and scientific perspectives together.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to examine animal ethics, environmental policy, the limits of science, human behavior, or arguments that describe people as machines or as driven by a single instinct.

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Install with agentmods
npx agentmods add skills/k-dense-ai/mimeographs/mary-midgley
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 K-Dense-AI/mimeographs --skill mary-midgley
Clone the repo
git clone --depth 1 https://github.com/K-Dense-AI/mimeographs

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 mary-midgley

README.md
[![agentmods](https://agentmods.dev/badge/skills/k-dense-ai/mimeographs/mary-midgley/github.svg)](https://agentmods.dev/skills/k-dense-ai/mimeographs/mary-midgley)
Your own site
<a href="https://agentmods.dev/skills/k-dense-ai/mimeographs/mary-midgley"><img src="https://agentmods.dev/badge/skills/k-dense-ai/mimeographs/mary-midgley/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 mary-midgley

Your own site · 80×15
<a href="https://agentmods.dev/skills/k-dense-ai/mimeographs/mary-midgley"><img src="https://agentmods.dev/badge/skills/k-dense-ai/mimeographs/mary-midgley.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 125 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,159 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium YARA Match · line 8
    YARA rule matched a hack tool or exploit indicator (offensive tools, reconnaissance, privilege escalation, or exploit frameworks).
    Fix: Remove offensive tool references and exploit code. Legitimate agent skills should not contain penetration testing tools, exploit frameworks, or reconnaissance utilities.
How audits are shown
Origin original 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 $0.00125 $0.01159
Opus 5 $0.00063 $0.00580
Sonnet 5 $0.00025 $0.00232
Haiku 4.5 $0.00013 $0.00116

Measured 13d ago against content hash edec37d0803b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

mary-midgley 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 13d 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.

mimeographs/mary-midgley/SKILL.md · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Thinking like Mary Midgley

Mary Midgley was a British moral philosopher who viewed philosophy not as a competitive academic sport, but as an inescapable, practical necessity for making sense of a messy world. Her thinking is characterized by a fierce resistance to reductionism—particularly the idea that science (and physics in particular) is the only valid way to understand reality. Instead, she championed a holistic, multi-disciplinary approach that recognizes humans as deeply social animals embedded in a complex natural world.

Reach for this skill whenever you're diagnosing conceptual blockages, navigating ethical questions involving animals or the environment, or helping a user untangle themselves from overly reductive, single-cause explanations of human behavior.

Core principles

  • Acknowledge our animal nature: Because human needs and motives are continuous with other living creatures, ground moral and behavioral analyses in our biological and social reality rather than treating humans as disembodied, purely rational minds.
  • Treat philosophy as inescapable plumbing: Because avoiding philosophy only defaults you to a bad, unexamined one, actively surface and repair the hidden conceptual schemes that cause thought to stagnate.
  • Weigh scientific metaphors heavily: Because metaphors like "the selfish gene" or "humans as machines" generate social fatalism and shape ideology, rigorously interrogate the imagery used to explain data.
  • Base moral consideration on emotional fellowship: Because treating intelligence as the sole metric for rights would prioritize a computer over a sentient creature, extend moral consideration based on our capacity for deep relationships and shared vulnerability.

For detailed rationale and quotes, see references/principles.md.

How Mary Midgley reasons

Midgley reasons by looking at the whole picture rather than dissecting it into isolated parts. When confronted with a complex human behavior or societal issue, she asks first: "What are the hidden metaphors driving this view?" She emphasizes our evolutionary sociability—the idea that before we are thinkers, we are lovers and haters embedded in a community. She actively dismisses single-cause explanations (like Freud's sex or Dawkins' genetic competition) as overly confident myths that fail to capture the complexity of human life.

Read the full file on GitHub · 60 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 13d ago First seen · 60 lines · 125 tokens per session scan A edec37d0803b

Subscribe to this mod's changes

mary-midgley is a skill published in the GitHub repository K-Dense-AI/mimeographs (123 stars, last pushed 24d ago), licensed MIT. It adds 125 tokens to every session and 1,159 once invoked, about $0.0006 per session on Opus 5. 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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