the-artificer-of-ciphers-llc/skills-from-the-artificer · hyrums-law/SKILL.md

hyrums-law skillA

hyrums-law is agent-read markdown (skill) from the-artificer-of-ciphers-llc/skills-from-the-artificer: Apply Hyrum's Law when discussing API design, backward compatibility, deprecation, versioning, or any situation where a system has enough users that its observable behavior—not just its documented interface—has become depended upon. Trigger on phrases like "can we change this behavior?", "is this a breaking change?", "users are depending on a bug we fixed", "we want to deprecate this", or any discussion about evolving a public or widely-used API. Hyrum's Law is essential reading for anyone build.

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 the-artificer-of-ciphers-llc/skills-from-the-artificer/hyrums-law@git:20260530.3e17152
Exact content
mdr add the-artificer-of-ciphers-llc/skills-from-the-artificer/hyrums-law@sha256:ee6a096dda4d5744

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_4dzwehlquybba6jb.svg)](https://markdownregistry.com/a/art_4dzwehlquybba6jb)

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Versions

versioncommittedcommitsizeaudit
git:20260530.3e17152 latest2026-05-30 3e17152 4,052 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 (4052 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

the-artificer-of-ciphers-llc/skills-from-the-artificer · 4 stars · license MIT · pushed 2026-09-13 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_4dzwehlquybba6jb
GET https://markdownregistry.com/api/v1/resolve?ref=the-artificer-of-ciphers-llc/skills-from-the-artificer/hyrums-law
GET https://markdownregistry.com/api/v1/blob/ee6a096dda4d5744cba19c74a73a9e423e90e07d8e855d2248ad0f6b18222d3f

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