playground SKILL.md skillA

playground from nota-america/forgecat-agent-profiles is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add nota-america/forgecat-agent-profiles/playground@git:20260610.c645100

Pins git:20260610.c645100 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
nota-america/forgecat-agent-profiles
Path
profiles/anthropics/claude-plugins-official/anthropics_claude-plugins-official_playground/for-forgecat/skills/playground/SKILL.md
Versions recorded
1
Latest version
git:20260610.c645100, committed Jun 10, 2026
Size
3,824 bytes
Repository stars
93
License
Apache-2.0

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.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Playground Builder

A playground is a self-contained HTML file with interactive controls on one side, a live preview on the other, and a prompt output at the bottom with a copy button. The user adjusts controls, explores visually, then copies the generated prompt back into Claude.

## When to use this skill

When the user asks for an interactive playground, explorer, or visual tool for a topic — especially when the input space is large, visual, or structural and hard to express as plain text.

## How to use this skill

1. **Identify the playground type** from the user's request
2. **Load the matching template** from `templates/`:
   - `templates/design-playground.md` — Visual design decisions (components, layouts, spacing, color, typography)
   - `templates/data-explorer.md` — Data and query building (SQL, APIs, pipelines, regex)
   - `templates/concept-map.md` — Learning and exploration (concept maps, knowledge gaps, scope mapping)
   - `templates/document-critique.md` — Document review (suggestions with approve/reject/comment workflow)
   - `templates/diff-review.md` — Code review (git diffs, commits, PRs with line-by-line commenting)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add nota-america/forgecat-agent-profiles/playground@sha256:521a3d62211e5f47

The line at the top of this page pins the label git:20260610.c645100, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_j2mx3oeqizgy3qmg.svg)](https://markdownregistry.com/a/art_j2mx3oeqizgy3qmg)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Jun 10, 2026.

versioncommittedcommitsizeaudit
git:20260610.c645100 latest2026-06-10 c645100 3,824 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (3824 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

nota-america/forgecat-agent-profiles · 93 stars · license Apache-2.0 · pushed 2026-09-23 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_j2mx3oeqizgy3qmg
GET https://markdownregistry.com/api/v1/resolve?ref=nota-america/forgecat-agent-profiles/playground
GET https://markdownregistry.com/api/v1/blob/521a3d62211e5f47b65ed17b660e001b15cf8d88d058cbf31bc00e889bcb63cc

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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