haabe/mycelium · plugins/mycelium/skills/harms-check/SKILL.md

harms-check skillA

harms-check is agent-read markdown (skill) from haabe/mycelium: Use when building anything USER-FACING (or with persuasion/retention/cancellation/consent/pricing flows, or that touches vulnerable people) to surface design-level harm the security/privacy/compliance gates miss: dark/deceptive patterns and foreseeable misuse. Assumes the product works as designed and asks who it could harm and whether it is Happier-negative. NUDGE, not a block..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add haabe/mycelium/harms-check@git:20260711.b293f0c
Exact content
mdr add haabe/mycelium/harms-check@sha256:00627d7f0cdd0088

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_w7snjk3csbirqufa.svg)](https://markdownregistry.com/a/art_w7snjk3csbirqufa)

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Versions

versioncommittedcommitsizeaudit
git:20260711.b293f0c latest2026-07-11 b293f0c 5,269 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (5269 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

haabe/mycelium · 46 stars · license MIT · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_w7snjk3csbirqufa
GET https://markdownregistry.com/api/v1/resolve?ref=haabe/mycelium/harms-check
GET https://markdownregistry.com/api/v1/blob/00627d7f0cdd00884eaf429ff26508e3b4909e03279758336cd852639c0e627f

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.