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.
/plugin marketplace add medy-gribkov/arcananpx agentmods add plugins/medy-gribkov/arcana/xlsxgit clone --depth 1 https://github.com/medy-gribkov/arcanaWrote 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/medy-gribkov/arcana/xlsx)<a href="https://agentmods.dev/plugins/medy-gribkov/arcana/xlsx"><img src="https://agentmods.dev/badge/plugins/medy-gribkov/arcana/xlsx.svg" alt="Measured on agentmods" height="20"></a>Grade A, and why
xlsx 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 today.
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": "xlsx",
"source": "./skills/xlsx",
"description": "Spreadsheet operations for .xlsx, .xlsm, .csv, .tsv. Reading, editing, creating, formatting, charting, and data cleaning.",
"version": "1.0.1",
"tags": [
"office",
"data"
],
"verified": true,
"author": "arcana",
"companions": [],
"conflicts": []
}What ships with it
1 file beside marketplace.json#xlsx in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- today First seen · 14 lines scan A ef819af73e6e
xlsx is a plugin published in the GitHub repository medy-gribkov/arcana (1 stars, last pushed 1mo ago), licensed Apache-2.0. 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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