microsoft/cat-agent-skills is a static website that catalogs reusable instruction sets and related packages for AI agents. People use it to search, filter, rate, and download skills for Cowork, Copilot Studio, and Scout, along with Copilot plugins and Scout automations. The catalogue entries are the skills, instructions, plugins, and settings displayed by the site.
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 skills add microsoft/cat-agent-skills --skill blog-post-structure-passgit clone --depth 1 https://github.com/microsoft/cat-agent-skillsWrote 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/microsoft/cat-agent-skills/blog-post-structure-pass)<a href="https://agentmods.dev/skills/microsoft/cat-agent-skills/blog-post-structure-pass"><img src="https://agentmods.dev/badge/skills/microsoft/cat-agent-skills/blog-post-structure-pass/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/microsoft/cat-agent-skills/blog-post-structure-pass"><img src="https://agentmods.dev/badge/skills/microsoft/cat-agent-skills/blog-post-structure-pass.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00044 | $0.00568 |
| Opus 5 | $0.00022 | $0.00284 |
| Sonnet 5 | $0.00009 | $0.00114 |
| Haiku 4.5 | $0.00004 | $0.00057 |
Grade A, and why
blog-post-structure-pass 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 9d 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 — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Blog Post Structure Pass
Use this skill to improve the structure, argument, flow, and readability of a blog post while preserving the source facts and the author's intended point of view.
Core rules
- Do not invent evidence, examples, client stories, dates, results, or quotes.
- Preserve the author's stance unless asked to change it.
- Improve the shape of the argument before polishing sentences.
- Keep the revised post suitable for the intended audience and channel.
- If important evidence is missing, mark it as a gap rather than filling it in.
Default post skeleton
Use this skeleton as a guide, not a rigid template:
- Hook / tension - Why this matters now.
- Problem - What people usually misunderstand or struggle with.
- Reframe - The more useful way to think about it.
- Practical implications - What changes in decisions, behaviour, governance, delivery, or operations.
- Example or proof - Evidence from supplied material.
- Takeaway - What the reader should do, question, or remember.
Workflow
- Read the source post or draft.
- Identify the current thesis and intended audience.
- Diagnose structural issues: weak opening, unclear argument, repetition, missing transitions, unsupported claims, premature solutioning, or weak ending.
- Create a revised outline.
- Rewrite the post into the improved structure.
- Preserve factual claims from the source and avoid adding unsupported material.
- Provide a short change note only if useful.
Output format
# [Revised title]
[Rewritten post]
---
## Change notes
- [Only include important changes, assumptions, or evidence gaps.]
If the user asks for the structure only, use:
## Recommended structure
1. [Section]
2. [Section]
3. [Section]
## Rationale
[Short explanation]
References
This skill includes supporting reference material. Read the relevant reference file when the task needs additional structure, rubric detail, examples, or checklist support.
What ships with it
2 files beside SKILL.md 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.
- 9d ago First seen · 84 lines · 44 tokens per session scan A 3aa70ac05cc3
blog-post-structure-pass is a skill published in the GitHub repository microsoft/cat-agent-skills (66 stars, last pushed yesterday), licensed MIT. It adds 44 tokens to every session and 568 once invoked, about $0.0002 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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