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.
npx agentmods add skills/posit-dev/open-source-website/review-postnpx skills add posit-dev/open-source-website --skill review-postgit clone --depth 1 https://github.com/posit-dev/open-source-websiteWhat 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 | $0.00018 | $0.01159 |
| Opus 5 | $0.00009 | $0.00580 |
| Sonnet 5 | $0.00004 | $0.00232 |
| Haiku 4.5 | $0.00002 | $0.00116 |
Grade A, and why
review-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 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 — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Review a blog post's content the way a reviewer would — checking that the content lines up with its frontmatter, surfacing things authors commonly miss, and flagging accessibility issues. Complements the check-post skill, which validates frontmatter mechanically; this skill reads the actual post text.
This skill does not check writing style. At the end, remind the author to get a human review for tone, clarity, and flow.
Step 1: Identify the post
If the user provided a path in their request, use that. Otherwise, look for blog posts changed on the current branch:
git diff --name-only --diff-filter=d origin/main...HEAD -- 'content/blog/**/index.md' 'content/blog/**/index.qmd'
If no changed posts are found, ask the user which post to review.
Step 2: Read the post
For each post, read both the frontmatter and the body. If an index.qmd exists, prefer it as the source of truth; otherwise read index.md. You need the actual prose, not just the metadata.
Step 3: Content vs. frontmatter consistency
Compare what the post actually says to what its frontmatter claims. Flag mismatches:
descriptiondrift — does the description still summarize the post accurately? Descriptions written by thenew-postskill often stop matching the finished draft.software/languages/topics— do the values reflect what the post is actually about? If the post discusses ggplot2 butsoftwareonly lists dplyr, flag it. If the inferred topics no longer fit, flag it. Suggest the values that would match.source— if the post is clearly about one of the projects with a blog listing page (positron,tidyverse,ai,shiny,great_tables,plotnine,pointblank,quarto) andsourceisn't set, flag it. Seecontent/blog/_authoring-guide.mdfor the rule.title— does it match the post's actual focus, or has the angle shifted during writing?
Step 4: Things authors miss
- Placeholders left in the draft — search the body for
TODO,TBD,XXX,FIXME,lorem ipsum,[insert ...],[link], etc. List each occurrence with line context. - Internal blog links use the permalink pattern — flag any links that look like
/blog/<source>/<year>/<slug>/or other content-directory paths instead of/blog/YYYY-MM-DD_slug/. (See "Linking to other blog posts" in the authoring guide.) - Code blocks have a language tag — fenced code blocks should open with a language (
```r,```python,```sh, etc.), not bare```. .qmdimages usefig-alt— alt text in.qmdshould be{fig-alt="..."}, not(the bracket text becomes a caption in Quarto).
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 · 81 lines · 18 tokens per session scan A 8890793bc479
review-post is a skill published in the GitHub repository posit-dev/open-source-website (50 stars, last pushed 3d ago), licensed MIT. It adds 18 tokens to every session and 1,159 once invoked, about $0.0001 per session on Opus 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.
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