# Mermaid

> |-

- **Type:** Skill
- **Install:** `agentstack add skill-ahgraber-skills-mermaid`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [ahgraber](https://agentstack.voostack.com/s/ahgraber)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** CC0-1.0
- **Upstream author:** [ahgraber](https://github.com/ahgraber)
- **Source:** https://github.com/ahgraber/skills/tree/main/skills/mermaid

## Install

```sh
agentstack add skill-ahgraber-skills-mermaid
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Mermaid Diagrams for Chatbots

Use this skill to create Mermaid diagrams that render well in Markdown chat interfaces, validate their syntax locally, and render images without calling a web service.

## Invocation Notice

- Inform the user when this skill is being invoked by name: `mermaid`.

## Workflow

1. Identify the diagram type (flowchart, sequenceDiagram, stateDiagram-v2) based on the request.
2. Draft Mermaid code in a fenced Markdown block using `mermaid`.
3. Follow formatting conventions in `references/chatbot-mermaid-guidelines.md`.
4. Validate the diagram using `scripts/validate_mermaid.py`.
5. If the user wants an image file, render with `scripts/render_mermaid.py`.

## Scripts

- `scripts/validate_mermaid.py`
  - Validate Mermaid code by invoking the local Mermaid CLI (`mmdc`).
  - Use when you need to check whether Mermaid parses without errors.
- `scripts/render_mermaid.py`
  - Render Mermaid to SVG/PNG/PDF using the local Mermaid CLI (`mmdc`).
  - Prefer SVG for Markdown renderers when image embedding is required.

## Notes

- These scripts expect `mmdc` to be available on PATH (Mermaid CLI).
  If missing, instruct the user to install it locally; do not use the Mermaid web service.
- Dependencies are managed via inline `uv` script metadata in each Python script.
  Use `--install-chromium` to bootstrap the Chromium binary via pyppeteer when needed.
- Keep diagrams compact and readable in chat: avoid overly wide graphs, use short labels, and group related states.
- If the user asks for raw Markdown, return only the fenced `mermaid` block unless they ask for extra explanation.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [ahgraber](https://github.com/ahgraber)
- **Source:** [ahgraber/skills](https://github.com/ahgraber/skills)
- **License:** CC0-1.0

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-ahgraber-skills-mermaid
- Seller: https://agentstack.voostack.com/s/ahgraber
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.