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/animalzinc/claude-plugins/mdviewnpx skills add animalzinc/claude-plugins --skill mdviewgit clone --depth 1 https://github.com/animalzinc/claude-pluginsWrote 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/animalzinc/claude-plugins/mdview)<a href="https://agentmods.dev/skills/animalzinc/claude-plugins/mdview"><img src="https://agentmods.dev/badge/skills/animalzinc/claude-plugins/mdview.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00000 | $0.02150 |
| Opus 5 | $0.00000 | $0.01075 |
| Sonnet 5 | $0.00000 | $0.00430 |
| Haiku 4.5 | $0.00000 | $0.00215 |
Grade A, and why
mdview 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 5d 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 — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
name: mdview description: Open a clean, rendered (not raw) view of a markdown file in the browser for fast reading, with rich-text copy and an inline-comment to paste-ready-feedback loop. Use when the user says "show me the markdown", "render this markdown", "open that doc so I can read it", "let me review the markdown", "mdview ", or asks to view, read, or proof a .md file you produced. disable-model-invocation: false allowed-tools: []
mdview
Renders a markdown file into a clean, self-contained HTML reading view and opens it in the default browser. The point: the user reads the rendered doc, not the raw syntax, with one command, and can hand back inline comments as a paste-ready prompt. It replaces the "spin up a throwaway HTML file just to read it" step.
This is a lightweight middle ground between a one-off HTML preview and a full collaborative editor. No server, no auth, no live agent editing.
How to invoke
Run the generator bundled with this skill (it sits next to this file as generate.py), passing the absolute path of the markdown file (resolve it first, so this works from any project):
python3 <this-skill-dir>/generate.py /abs/path/to/file.md
On Windows, python3 is usually not a real command: Windows ships a stub under that name that opens the Microsoft Store instead of running anything. Use py -3 there, and fall back to python. If none of the three runs the script, Python 3 is not installed on the machine — say so and point at python.org, rather than retrying variants.
That writes a self-contained file to ~/.cache/mdview/<hash>.html and opens it in the browser. Nothing else to start or stop. Flags (rarely needed): --browser <AppName> to force a specific app (macOS only), --no-open / --print-path to just build and print the path.
To read two files side by side, pass the second with --against:
python3 <this-skill-dir>/generate.py /abs/path/to/current.md --against /abs/path/to/other.md
What ships with it
4 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.
- 5d ago First seen · 95 lines · 0 tokens per session scan A e225c6875a5f
mdview is a skill published in the GitHub repository animalzinc/claude-plugins (15 stars, last pushed 16d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,150 tokens. 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.
Other skills, from other repositories
doc-kami-parchment
Warm parchment canvas (#f5f4ed), monochrome ink-blue accent (#1B365D), one serif family, and editorial-grade typography.
doc-kami-parchment
暖羊皮纸底 (#f5f4ed) + 墨蓝单色 accent (#1B365D) + 单一衬线字体, 编辑级排印.
configure-readme
README.md with logo, badges, features, tech stack sections. Use when creating a README, auditing missing sections, or adding shields.io badges.
blueprint-docs-list
List blueprint documents (ADRs, PRDs, PRPs) with frontmatter metadata. Use when listing docs, auditing statuses, or generating an index for project documentation.
manuscript-formatter
Reformats a manuscript, article, or long-form text to match a specific publication's structural and style requirements — adjusting headings, paragraph spacing, citation format, pull-quote placement, and front matter without altering the content itself.
researcher
Use when asked to create research documents, generate PDFs, make one-pagers, or create cheatsheets. Triggers: "research document", "generate PDF", "one-pager", "cheatsheet", "distinctive design". Provides HTML/Markdown/PDF with Terminal, Editorial, Corporate, Industrial, Fresh aesthetic presets.