Borrowing it
Nothing to install: this file belongs to posit-dev/open-source-website. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/posit-dev/open-source-website/main/.claude/skills/new-post/SKILL.mdgit clone --depth 1 https://github.com/posit-dev/open-source-websiteWrote 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/skills/posit-dev/open-source-website/new-post)<a href="https://agentmods.dev/skills/posit-dev/open-source-website/new-post"><img src="https://agentmods.dev/badge/skills/posit-dev/open-source-website/new-post/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/skills/posit-dev/open-source-website/new-post"><img src="https://agentmods.dev/badge/skills/posit-dev/open-source-website/new-post.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 19 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00020 | $0.01700 |
| Opus 5.5 | $0.00008 | $0.00680 |
| Sonnet 5.5 | $0.00004 | $0.00340 |
| Haiku 4.5 | $0.00002 | $0.00170 |
Grade A, and why
new-post 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 7d 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 — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Help the user create a new blog post for the Posit open-source website. Work through these steps in order.
Step 0: Preflight check
Description: "Checking whether you're working from a direct clone or a fork"
git remote get-url origin
If the remote URL does not contain posit-dev/open-source-website, note to the user:
Looks like you're working from a fork. That's supported — you'll just need to comment
/deploy-previewon your PR once to trigger the preview build (fork PRs can't auto-deploy because the workflow runs with a read-only token). If you're a member of theposit-devorg, the smoother path is to cloneposit-dev/open-source-websitedirectly so branch PRs get auto-deploy.
Then ask whether they'd like to continue from the fork or stop to re-clone.
Step 1: Gather information
Ask the user for anything not already provided in their request:
- Title — the post title
- Topic — a brief description of what the post is about (use this to infer frontmatter)
- Author(s) — full name(s) of the people writing the post
- Format — default to
.qmd. It supports executable code and Quarto features (tabsets, callouts, multi-column layouts), so it's the right choice for most posts. Use.mdonly when the post is straight prose with no code blocks and none of those Quarto features. Offer.ipynbif the user prefers writing in Jupyter. For.qmdposts that will execute code, also ask whether it's R, Python, or both.
Step 2: Infer frontmatter
From the title and topic, reason about:
- slug — only needed if it should differ from the folder name; otherwise the folder name is used automatically
- software — folder names from
content/software/that the post is about (e.g.ggplot2,quarto,great-tables) - other_software — optional; display names of software the post is about that has no folder in
content/software/(e.g.Polars,knitr). These show as greyed-out, non-clickable pills. - languages — programming languages featured (R, Python, etc.)
- topics — one or more from the fixed set in
data/topics.yaml: Machine Learning, Artificial Intelligence, Visualization, Interactive Apps, Publishing, MLOps and Admin, Data Wrangling, Best Practices, Community - source — set if the post belongs to one of the projects with its own blog listing page, so it appears there (e.g.
source: tidyverse→/blog/q/tidyverse/). Older project blog URLs (e.g.tidyverse.org/blog/) redirect to these listing pages, so this is how a new post stays visible to those readers. Valid values:positron,tidyverse,ai,shiny,great_tables,plotnine,pointblank,quarto. Infer from the inferredsoftware/topic (e.g. dplyr/ggplot2 →tidyverse, Positron →positron); confirm with the user. Omit only if the post genuinely doesn't belong to any of these projects. - description — a draft 1–2 sentence description of the post
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.
- 7d ago Changed · +1 lines 1a90a777fdc2
- 2mo ago First seen · 123 lines · 20 tokens per session scan A 35f2ee07d558
new-post is a skill published in the GitHub repository posit-dev/open-source-website (65 stars, last pushed yesterday), licensed MIT. It adds 20 tokens to every session and 1,700 once invoked, about $0.0001 per session on Opus 5.5. 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.
new-post compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| new-postposit-dev/open-source-website | Skill | 65 | yesterday | MIT | A | 20 | Claude Code |
| imagegenopenai/codex | Skill | 134k | today | Apache-2.0 | A | 113 | Codex |
| local-ai-agentsmicrosoft/ai-agents-for-beginners | Skill | 79k | today | MIT | A | 200 | Claude Code, Codex |
| playwright-climicrosoft/playwright | Skill | 99k | today | Apache-2.0 | A | 19 | Claude Code |
| systematic-debuggingobra/superpowers | Skill | 314k | 3d ago | MIT | A | 21 | Claude Code |
| next-cache-components-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 95 | Claude Code |
| chat-pet-sprite-creationmicrosoft/vscode | Skill | 195k | today | MIT | A | 53 | Claude Code, Codex |