Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/melodic-software/claude-code-pluginsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/plugins/melodic-software/claude-code-plugins/playgrounds)<a href="https://agentmods.dev/plugins/melodic-software/claude-code-plugins/playgrounds"><img src="https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/playgrounds/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/plugins/melodic-software/claude-code-plugins/playgrounds"><img src="https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/playgrounds.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade A, and why
playgrounds scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 26d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
{
"$schema": "https://json.schemastore.org/claude-code-plugin-manifest.json",
"name": "playgrounds",
"version": "0.2.0",
"description": "One-step access to Anthropic's first-party playground plugin: declares the cross-marketplace dependency, routes playground-shaped requests to the upstream skill when it is installed, emits the install commands when it is not, and carries field-tested prompt recipes, cloud-session delivery guidance, and consumer cautions. Generates nothing itself.",
"author": {
"name": "Melodic Software",
"email": "[email protected]"
},
"license": "MIT",
"keywords": [
"playground",
"interactive",
"explorer",
"html",
"prompt-round-trip"
],
"dependencies": [
{
"name": "playground",
"marketplace": "claude-plugins-official"
}
]
}
What it installs
The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 183 tokens a session between them. Each is measured on its own page, and each can be installed alone.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 26d ago Changed 5aeb5487ef74
- 1mo ago Changed 5878fed77cf8
- 1mo ago Changed c5927e00a2c3
- 1mo ago First seen · 25 lines scan A 07a6b668f4c0
playgrounds is a plugin published in the GitHub repository melodic-software/claude-code-plugins (26 stars, last pushed today), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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