nota-america/forgecat-agent-profiles · profiles/anthropics/claude-plugins-official/anthropics_claude-plugins-official_playground/for-codex/.agents/skills/playground/SKILL.md

playground skillA

playground is agent-read markdown (skill) from nota-america/forgecat-agent-profiles: Creates interactive HTML playgrounds — self-contained single-file.

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 nota-america/forgecat-agent-profiles/playground@git:20260610.c645100
Exact content
mdr add nota-america/forgecat-agent-profiles/playground@sha256:88e72596cd122d5b

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_qv3wm3cn2oeqsdae.svg)](https://markdownregistry.com/a/art_qv3wm3cn2oeqsdae)

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Versions

versioncommittedcommitsizeaudit
git:20260610.c645100 latest2026-06-10 c645100 3,830 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 (3830 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 · 72 stars · license Apache-2.0 · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_qv3wm3cn2oeqsdae
GET https://markdownregistry.com/api/v1/resolve?ref=nota-america/forgecat-agent-profiles/playground
GET https://markdownregistry.com/api/v1/blob/88e72596cd122d5bbcaddedfd07bb88874affcc09ff6fa7cb806f866a1242afa

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