jasonwarrenuk/goblin-mode · skills/artefact-playground/SKILL.md

Artefact: Playground skillA

Artefact: Playground is agent-read markdown (skill) from jasonwarrenuk/goblin-mode: Creates interactive HTML playgrounds: self-contained single-file explorers that let users configure something visually through controls, see a live preview and copy out a prompt. Use when the user asks to make a playground, explorer or interactive tool for a topic..

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 jasonwarrenuk/goblin-mode/Artefact: Playground@git:20260910.391bea0
Exact content
mdr add jasonwarrenuk/goblin-mode/Artefact: Playground@sha256:f8d9d230d54120d1

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_dnuwk27bj7jqvpui.svg)](https://markdownregistry.com/a/art_dnuwk27bj7jqvpui)

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Versions

versioncommittedcommitsizeaudit
git:20260910.391bea0 latest2026-09-10 391bea0 4,918 BA view · diff
git:20260910.d07fb9a2026-09-10 d07fb9a 4,916 BA view · diff
git:20260826.9a0f2b52026-08-26 9a0f2b5 4,952 BA view · diff
git:20260816.1f433b82026-08-16 1f433b8 4,724 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 (4918 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

jasonwarrenuk/goblin-mode · 5 stars · license none · pushed 2026-09-11 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_dnuwk27bj7jqvpui
GET https://markdownregistry.com/api/v1/resolve?ref=jasonwarrenuk/goblin-mode/Artefact: Playground
GET https://markdownregistry.com/api/v1/blob/f8d9d230d54120d1d42ab9dd7944147fdaa1ebbb53946f87af8bb4a4df10993e