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 posit-dev/skillsnpx agentmods add plugins/posit-dev/skills/marketplacegit clone --depth 1 https://github.com/posit-dev/skillsGrade A, and why
posit-dev-skills 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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
{
"name": "posit-dev-skills",
"owner": {
"name": "Garrick Aden-Buie (Posit, PBC)",
"email": "[email protected]"
},
"metadata": {
"description": "A collection of Claude Skills for Posit development teams, and open-source users including tools for tidyverse workflows.",
"version": "0.1.0"
},
"plugins": [
{
"name": "posit-dev",
"description": "General-purpose developer skills useful across any language, project type, or context",
"source": "./",
"strict": false,
"skills": [
"./posit-dev/critical-code-reviewer",
"./posit-dev/describe-design",
"./posit-dev/implement",
"./posit-dev/new-work",
"./posit-dev/review-testing",
"./posit-dev/working-on"
]
},
{
"name": "github",
"description": "Skills for GitHub pull request workflows — creating PRs, addressing review feedback, and resolving threads",
"source": "./",
"strict": false,
"skills": [
"./github/pr-create",
"./github/pr-threads-address",
"./github/pr-threads-resolve"
]
},
{
"name": "open-source",
"description": "Collection of skills for open-source R and Python package developers",
"source": "./",
"strict": false,
"skills": [
"./open-source/release-post",
"./open-source/create-release-checklist"
]
},
{
"name": "r-lib",
"description": "Collection of skills for R package developers",
"source": "./",
"strict": false,
"skills": [
"./r-lib/testing-r-packages",
"./r-lib/cli",
"./r-lib/cran-extrachecks",
"./r-lib/lifecycle",
"./r-lib/r-package-development",
"./r-lib/r-cli-app",
"./r-lib/mirai",
"./alt-text"
]
},
{
"name": "ggsql",
"description": "Skills for writing ggsql queries — a grammar of graphics for SQL",
"source": "./",
"strict": false,
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.
- 2d ago First seen · 105 lines scan A c5bdc413cb4f
posit-dev-skills is a plugin published in the GitHub repository posit-dev/skills (488 stars, last pushed 4d 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 2026-08-30.
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