marp-slide-quality

marp-slide-quality is a skill for Claude Code from vladolaru/claude-code-plugins. It costs 63 tokens per session (930 once invoked), scanned A, original, MIT.

A checker for Marp presentations, which are slide decks written in Markdown. It reviews slide content, layout, code, colors, and accessibility.

In plain words
What is it for?
Use it to inspect and improve Marp Markdown files and validate their slide quality.
Why use it?
It finds common presentation problems before you share or export the deck, such as overcrowded slides or readability issues.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the pirategoat-tools plugin — 22 skills shipped together

Install

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.

agentmods
npx agentmods add skills/vladolaru/claude-code-plugins/marp-slide-quality
Any agent
npx skills add vladolaru/claude-code-plugins --skill marp-slide-quality
Clone the repo
git clone --depth 1 https://github.com/vladolaru/claude-code-plugins

Made for: Claude Code.

Or install pirategoat-tools, the plugin that ships this one along with the rest of its 22 skills.

Wrote 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.

agentmods badge for marp-slide-quality

README.md
[![agentmods](https://agentmods.dev/badge/skills/vladolaru/claude-code-plugins/marp-slide-quality.svg)](https://agentmods.dev/skills/vladolaru/claude-code-plugins/marp-slide-quality)
Your own site
<a href="https://agentmods.dev/skills/vladolaru/claude-code-plugins/marp-slide-quality"><img src="https://agentmods.dev/badge/skills/vladolaru/claude-code-plugins/marp-slide-quality.svg" alt="Measured on agentmods" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 930 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00063 $0.00930
Opus 5 $0.00032 $0.00465
Sonnet 5 $0.00013 $0.00186
Haiku 4.5 $0.00006 $0.00093

Measured 2d ago against content hash 2d91666f1bc5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

marp-slide-quality 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.

plugins/pirategoat-tools/skills/marp-slide-quality/SKILL.md · 120 lines

How it starts

The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Marp Slide Quality Analyzer

This Skill uses SlideGauge to analyze Marp markdown presentations and help you create high-quality slides that follow best practices.

When to use this Skill

  • User is working on a Marp presentation (.md file with marp: true frontmatter)
  • User asks to check, analyze, validate, or improve slide quality
  • User mentions SlideGauge or slide quality issues
  • User wants to fix specific slide problems (too many bullets, long content, etc.)

Instructions

1. Initial Analysis

When user asks to analyze their slides:

# Run SlideGauge with text output for quick overview
uvx --from git+https://github.com/nibzard/slidegauge slidegauge <path-to-presentation.md> --text

Explain the results:

  • Overall score and passing rate
  • Number of issues found
  • Category breakdown (a11y, code, color, content, layout)

2. Detailed Analysis

For slides that need fixing (score < 80):

# Get JSON output with detailed diagnostics
uvx --from git+https://github.com/nibzard/slidegauge slidegauge <path-to-presentation.md> --json | jq '.slides[] | select(.score < 80)'

For each failing slide, identify:

  • Exact slide number and title
  • Specific issues with deduction amounts
  • Actionable recommendations

3. Fix Common Issues

Use the Edit tool to fix issues. See FIXES.md for specific fix patterns.

Common fixes:

  • Too many bullets: Split into multiple slides or consolidate
  • Content too long: Trim text or split slide
  • Code too long: Simplify examples or split
  • Too many lines: Reduce content density
  • Title too long: Shorten to ≤35 characters

4. Validate Fixes

After making changes, re-run SlideGauge:

uvx --from git+https://github.com/nibzard/slidegauge slidegauge <path-to-presentation.md> --text

Compare before/after scores and confirm improvements.

Workflow

  1. Analyze: Run SlideGauge to get baseline scores
  2. Prioritize: Focus on slides scoring < 70 first, then < 80
  3. Fix: Apply fixes from FIXES.md based on diagnostics
  4. Validate: Re-run to confirm improvements
  5. Iterate: Repeat until all slides pass (≥70) or user is satisfied

Read the full file on GitHub · 120 lines

Files

What ships with it

3 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.

Changes

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.

  1. 2d ago First seen · 120 lines · 63 tokens per session scan A 2d91666f1bc5

Subscribe to this mod's changes

marp-slide-quality is a skill published in the GitHub repository vladolaru/claude-code-plugins (8 stars, last pushed yesterday), licensed MIT. It adds 63 tokens to every session and 930 once invoked, about $0.0003 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 2026-09-03.

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