mermaid-render

mermaid-render is a skill for Claude Code, Codex from Desko77/cursor-1c-skills. It costs 166 tokens per session (1,209 once invoked), scanned A, a copy of mermaid-render, MIT.

A local tool that converts Mermaid diagram text into PNG, SVG, or PDF image files. It can process individual Mermaid files or extract diagrams from Markdown documents.

In plain words
What is it for?
Render Mermaid diagrams as images or PDFs, including all Mermaid blocks found in a Markdown file.
Why use it?
It removes the need to render diagrams manually and makes them available in formats suitable for documents and sharing.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python ~/.claude/skills/mermaid-render/scripts/render.py ./d.mmd -o ./out/result.png.

Good fit Render Mermaid diagrams as images or PDFs, including all Mermaid blocks found in a Markdown file.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/Desko77/cursor-1c-skills
agentmods
npx agentmods add skills/desko77/cursor-1c-skills/mermaid-render

Made for: Claude Code, Codex.

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 mermaid-render

README.md
[![agentmods](https://agentmods.dev/badge/skills/desko77/cursor-1c-skills/mermaid-render/github.svg)](https://agentmods.dev/skills/desko77/cursor-1c-skills/mermaid-render)
Your own site
<a href="https://agentmods.dev/skills/desko77/cursor-1c-skills/mermaid-render"><img src="https://agentmods.dev/badge/skills/desko77/cursor-1c-skills/mermaid-render/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.

agentmods 80×15 button for mermaid-render

Your own site · 80×15
<a href="https://agentmods.dev/skills/desko77/cursor-1c-skills/mermaid-render"><img src="https://agentmods.dev/badge/skills/desko77/cursor-1c-skills/mermaid-render.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 166 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,209 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
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 analysis-evasion · line 1
    Suspicious Unicode normalization or mixed-script content
    Fix: Review the flagged content for security risks. Ensure no credentials, secrets, or sensitive data are exposed.
How audits are shown
Origin 100% copy Near-identical to another mod 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 $0.00166 $0.01209
Opus 5 $0.00083 $0.00605
Sonnet 5 $0.00033 $0.00242
Haiku 4.5 $0.00017 $0.00121

Measured 6d ago against content hash d11726fbb5c1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

mermaid-render 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 6d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/render.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

This is a copy

100% identical to mermaid-render — 13 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/mermaid-render/SKILL.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/mermaid-render - Рендер mermaid-диаграмм в изображения

Тонкая обертка над mmdc (mermaid-cli). Внутри Puppeteer + Chrome headless + mermaid.js, как в peng-shawn/mermaid-mcp-server, но без MCP-сервера и без Docker.

Зависимости

  • mmdc (@mermaid-js/mermaid-cli) - проверь: mmdc --version. Если нет - npm install -g @mermaid-js/mermaid-cli.
  • Python 3 в PATH (для скрипта-обертки).

Использование

python ~/.claude/skills/mermaid-render/scripts/render.py <вход> [опции]

Сценарии входа

Расширение Поведение
.mmd / .mermaid Один файл с диаграммой -> одна картинка
.md / .markdown Извлекает все блоки ```mermaid -> по картинке на блок (<имя>-1.png, <имя>-2.png, ...)

Опции

Флаг По умолчанию Назначение
-o, --output рядом с входом Выходной файл (для .md - префикс перед -N.<ext>)
-t, --theme default default / forest / dark / neutral
-b, --bg white white, transparent, #F0F0F0
-f, --format png png / svg / pdf
-w, --width mmdc default 800 Ширина в пикселях
-H, --height mmdc default 600 Высота в пикселях
-s, --scale 2 Puppeteer scale - 2 для retina
--verbose выкл Показать вывод mmdc

Примеры

# Простой PNG рядом с входом, дефолтная тема, scale=2
python ~/.claude/skills/mermaid-render/scripts/render.py ./diagram.mmd

# Темная тема, прозрачный фон, SVG
python ~/.claude/skills/mermaid-render/scripts/render.py ./diagram.mmd -t dark -b transparent -f svg

# Все блоки mermaid из markdown в PNG-файлы
python ~/.claude/skills/mermaid-render/scripts/render.py ./README.md

# Указать выходной путь
python ~/.claude/skills/mermaid-render/scripts/render.py ./d.mmd -o ./out/result.png

Алгоритм работы для Claude

  1. Уточни у пользователя входной файл, если не передан явно. Поддерживаются .mmd, .mermaid, .md.
  2. Если пользователь не указал параметры рендера - используй дефолты (PNG, default-тема, белый фон, scale=2).
  3. Запусти скрипт через Bash:
python ~/.claude/skills/mermaid-render/scripts/render.py "<путь>" [-t ...] [-b ...] [-f ...]
  1. Скрипт печатает список созданных файлов с размерами - покажи пользователю.
  2. Если пользователь хочет встроить картинки в Markdown/Word - после рендера используй существующие скилы (md-to-docx для Word, обычные ![] ссылки для Markdown).

Read the full file on GitHub · 80 lines

Files

What ships with it

1 file 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. 6d ago First seen · 80 lines · 166 tokens per session scan A d11726fbb5c1

Subscribe to this mod's changes

mermaid-render is a skill published in the GitHub repository Desko77/cursor-1c-skills (55 stars, last pushed 8d ago), licensed MIT. It adds 166 tokens to every session and 1,209 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to mermaid-render, differing in 13 lines, and is treated as a copy.