earlyaidopters/gumroad-resources · resources/polyskill-kit/unpacked/polyskill-kit/polyskill-kit/install/claude_code/polyskill/SKILL.md

polyskill skillA

polyskill is agent-read markdown (skill) from earlyaidopters/gumroad-resources: Cross-runtime skill optimizer. Use this skill when the user wants to package an Agent Skill so it runs in both Claude Code and OpenAI Codex from a single portable source. Also use when the user wants to import an existing skill (Claude Code or Codex) into the portable format, build/emit for any runtime, install a skill into Claude Code or Codex, or troubleshoot why a skill behaves differently across runtimes..

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 earlyaidopters/gumroad-resources/polyskill@git:20260810.9572c5c
Exact content
mdr add earlyaidopters/gumroad-resources/polyskill@sha256:b93a69fab59fda73

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_2rquqreah52rlows.svg)](https://markdownregistry.com/a/art_2rquqreah52rlows)

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Versions

versioncommittedcommitsizeaudit
git:20260810.9572c5c latest2026-08-10 9572c5c 6,810 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 (6810 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

earlyaidopters/gumroad-resources · 33 stars · license none · pushed 2026-09-09 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_2rquqreah52rlows
GET https://markdownregistry.com/api/v1/resolve?ref=earlyaidopters/gumroad-resources/polyskill
GET https://markdownregistry.com/api/v1/blob/b93a69fab59fda73910b12630e83941e96d55fbea1b0c642bf367504177e0ecf

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