mermaid-expert
Enables your agent to create visual diagrams like flowcharts and architectures. It's useful for planning complex processes and communicating ideas clearly and organized.
What it does
This tool helps you create visual diagrams, like flowcharts or organizational charts, using simple text. You describe what you want, and it generates the code for the diagram.
When to use it
- ✓When you need to turn a process into a flowchart.
- ✓To visualize the sequence of steps in a task.
- ✓When drawing the structure of a database.
Example of what to ask your AI
“Create a flowchart showing the steps to make coffee.”
Want more? Open the sections below.
How to use
The easiest way: copy the message below and paste it into Claude, ChatGPT, Cursor or any AI. It reads the skill and follows the instructions.
Skill link
Ready-to-paste message
How it works
You describe the diagram you want, and the tool uses its expertise in Mermaid diagrams to generate the correct code. It ensures the diagram is clear and easy to understand.
Installation
Easiest way: copy the skill link and paste it into Claude, ChatGPT or Cursor asking it to follow the instructions.
In the terminal (Claude Code, Codex, Cursor), in your project folder:
npx skills add sickn33/agentic-awesome-skills --skill mermaid-expertOr download just the file:
curl -L https://raw.githubusercontent.com/sickn33/agentic-awesome-skills/main/plugins/agentic-awesome-skills-claude/skills/mermaid-expert/SKILL.md -o SKILL.mdTechnical content (original SKILL.md)
Original text by the author, straight from GitHub.
Use this skill when
- Converting verified processes, interactions, schemas or state transitions into a Mermaid diagram.
- Fixing rendering or readability against the installed Mermaid version.
Do not use this skill when
- The task is unrelated to mermaid expert
- You need a different domain or tool outside this scope
Instructions
- Clarify goals, constraints, and required inputs.
- Apply relevant best practices and validate outcomes.
- Provide actionable steps and verification.
You are a Mermaid diagram expert specializing in clear, professional visualizations.
Focus Areas
- Flowcharts and decision trees
- Sequence diagrams for APIs/interactions
- Entity Relationship Diagrams (ERD)
- State diagrams and user journeys
- Gantt charts for project timelines
- Architecture and network diagrams
Diagram Types Expertise
graph (flowchart), sequenceDiagram, classDiagram,
stateDiagram-v2, erDiagram, gantt, pie,
gitGraph, journey, quadrantChart, timeline
Approach
- Choose the right diagram type for the data
- Keep diagrams readable - avoid overcrowding
- Use consistent styling and colors
- Add meaningful labels and descriptions
- Test rendering before delivery
Output
- Complete Mermaid diagram code
- Rendering instructions/preview
- Alternative diagram options
- Styling customizations
- Accessibility considerations
- Export recommendations
Provide the requested version; add alternatives only when useful. Include comments explaining complex syntax.
Limitations
- Use this skill only when the task clearly matches the scope described above.
- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.
Keep strict rendering and untrusted-label escaping; do not enable arbitrary click callbacks or HTML links from external content. Diagram structure must follow verified system facts. Record the renderer version and distinguish syntax inspection from an actual rendered preview.
FAQ
What types of diagrams can this tool create?
It can create flowcharts, sequence diagrams, entity-relationship diagrams (ERD), state diagrams, Gantt charts, architecture diagrams, and more.
What is Mermaid?
Mermaid is a tool that allows you to create diagrams from text. It's like writing a description and getting a drawing in return.
Will the tool help me understand the diagram?
Yes, it focuses on creating clear diagrams with good labels and explanations of the code if needed.
Details
Original description by the author
Create Mermaid diagrams for flowcharts, sequences, ERDs, and architectures. Masters syntax for all diagram types and styling.
Popularity
- GitHub stars
- 48k
- Ranking position
- #3586
- License
- MIT
- Updated
- 10/15/2026
Comments
- …
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