mermaid-visualizer

mermaid-visualizer is a skill for Claude Code from axtonliu/axton-obsidian-visual-skills. It costs 57 tokens per session (2,126 once invoked), scanned A, a copy of mermaid-visualizer, MIT.

A set of instructions for turning written content into Mermaid diagrams, which are text-based diagrams supported by tools such as GitHub and Obsidian. It covers process flows, architectures, comparisons, mind maps, and other diagram types.

In plain words
What is it for?
Creating flowcharts, decision trees, system diagrams, mind maps, and presentation-ready visual explanations from text.
Why use it?
It helps choose a suitable diagram format and avoid syntax mistakes that would stop the diagram from rendering.

Skill for Claude Code

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

Part of the obsidian-visual-skills plugin — 3 skills shipped together

Good fit Creating flowcharts, decision trees, system diagrams, mind maps, and presentation-ready visual explanations from text.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/axtonliu/axton-obsidian-visual-skills/mermaid-visualizer
About the project

axton-obsidian-visual-skills is a set of Claude Code skills that turns text descriptions into Canvas, Excalidraw, and Mermaid diagrams for Obsidian. It is intended for people who want to create flowcharts, mind maps, and other visual notes from text, and the catalogue includes its three skills and plugin.

axtonliu/axton-obsidian-visual-skills · 3,586 stars · on GitHub

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.

Any agent
npx skills add axtonliu/axton-obsidian-visual-skills --skill mermaid-visualizer
Clone the repo
git clone --depth 1 https://github.com/axtonliu/axton-obsidian-visual-skills

Made for: Claude Code.

Or install obsidian-visual-skills, the plugin that ships this one along with the rest of its 3 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 mermaid-visualizer

README.md
[![agentmods](https://agentmods.dev/badge/skills/axtonliu/axton-obsidian-visual-skills/mermaid-visualizer/github.svg)](https://agentmods.dev/skills/axtonliu/axton-obsidian-visual-skills/mermaid-visualizer)
Your own site
<a href="https://agentmods.dev/skills/axtonliu/axton-obsidian-visual-skills/mermaid-visualizer"><img src="https://agentmods.dev/badge/skills/axtonliu/axton-obsidian-visual-skills/mermaid-visualizer/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-visualizer

Your own site · 80×15
<a href="https://agentmods.dev/skills/axtonliu/axton-obsidian-visual-skills/mermaid-visualizer"><img src="https://agentmods.dev/badge/skills/axtonliu/axton-obsidian-visual-skills/mermaid-visualizer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,126 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
  • Socket pass 18 Mar 2026
  • Snyk pass 15 Feb 2026
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 $0.00057 $0.02126
Opus 5 $0.00028 $0.01063
Sonnet 5 $0.00011 $0.00425
Haiku 4.5 $0.00006 $0.00213

Measured 12d ago against content hash 93fff4e93adc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

mermaid-visualizer 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 12d 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.

Origin

This is a copy

100% identical to mermaid-visualizer — 4 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.

mermaid-visualizer/SKILL.md · 277 lines

How it starts

The opening of the file, as written. The whole thing — 277 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mermaid Visualizer

Overview

Convert text content into clean, professional Mermaid diagrams optimized for presentations and documentation. Automatically handles common syntax pitfalls (list syntax conflicts, subgraph naming, spacing issues) to ensure diagrams render correctly in Obsidian, GitHub, and other Mermaid-compatible platforms.

Quick Start

When creating a Mermaid diagram:

  1. Analyze the content - Identify key concepts, relationships, and flow
  2. Choose diagram type - Select the most appropriate visualization (see Diagram Types below)
  3. Select configuration - Determine layout, detail level, and styling
  4. Generate diagram - Create syntactically correct Mermaid code
  5. Output in markdown - Wrap in proper code fence with optional explanation

Default assumptions:

  • Vertical layout (TB) unless horizontal requested
  • Medium detail level (balanced between simplicity and information)
  • Professional color scheme with semantic colors
  • Obsidian/GitHub compatible syntax

Diagram Types

1. Process Flow (graph TB/LR)

Best for: Workflows, decision trees, sequential processes, AI agent architectures

Use when: Content describes steps, stages, or a sequence of actions

Key features:

  • Swimlanes via subgraph for grouping related steps
  • Arrow labels for transitions
  • Feedback loops and branches
  • Color-coded stages

Configuration options:

  • layout: "vertical" (TB), "horizontal" (LR)
  • detail: "simple" (core steps only), "standard" (with descriptions), "detailed" (with annotations)
  • style: "minimal", "professional", "colorful"

2. Circular Flow (graph TD with circular layout)

Best for: Cyclic processes, continuous improvement loops, agent feedback systems

Use when: Content emphasizes iteration, feedback, or circular relationships

Key features:

  • Central hub with radiating elements
  • Curved feedback arrows
  • Clear cycle indicators

3. Comparison Diagram (graph TB with parallel paths)

Best for: Before/after comparisons, A vs B analysis, traditional vs modern systems

Read the full file on GitHub · 277 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. 12d ago First seen · 277 lines · 57 tokens per session scan A 93fff4e93adc

Subscribe to this mod's changes

mermaid-visualizer is a skill published in the GitHub repository axtonliu/axton-obsidian-visual-skills (3,586 stars, last pushed 2mo ago), licensed MIT. It adds 57 tokens to every session and 2,126 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to mermaid-visualizer, differing in 4 lines, and is treated as a copy.

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