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/bjzgcai/carter-marketplaceWrote 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/bjzgcai/carter-marketplace/useful-plugin)<a href="https://agentmods.dev/plugins/bjzgcai/carter-marketplace/useful-plugin"><img src="https://agentmods.dev/badge/plugins/bjzgcai/carter-marketplace/useful-plugin.svg" alt="Measured on agentmods" height="20"></a>Grade A, and why
useful-plugin 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 6d 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
{
"name": "useful-plugin",
"description": "A useful plugin featuring Ralph Wiggum technique - continuous self-referential AI loops for interactive iterative development, plus custom commands and agents",
"version": "2.0.0",
"author": {
"name": "Carter"
}
}
What it installs
The manifest is a name and a version. 4 commands, 2 agents, 1 hook, 3 MCP servers travel with it, and installing the plugin installs all of them — 119 tokens a session between them. Each is measured on its own page, and each can be installed alone.
- Command ralph-help A 9 tokens
- Command ralph-loop A 9 tokens
- Command commit A 7 tokens
- Command cancel-ralph A 7 tokens
- Agent code-review A 44 tokens
- Agent chrome-devtools A 43 tokens
- Hook Stop A not measured
- MCP server chrome-devtools A not measured
- MCP server context7 A not measured
- MCP server playwright A not measured
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.
- 6d ago First seen · 9 lines scan A 973852ab6834
useful-plugin is a plugin published in the GitHub repository bjzgcai/carter-marketplace (8 stars, last pushed 7mo ago), 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 2026-08-31.
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