mermaid-expert
Create Mermaid diagrams for flowcharts, sequences, ERDs, and architectures. Masters syntax for all diagram types and styling.
About this skill
The `mermaid-expert` skill empowers an AI agent to act as a specialist in creating, interpreting, and refining Mermaid diagrams. This skill enables the agent to generate accurate and stylistically sound Mermaid code for various diagram types, including flowcharts, sequence diagrams, entity-relationship diagrams (ERDs), and architecture diagrams. It goes beyond basic generation by mastering the nuances of Mermaid syntax and offering best practices, guidance, and troubleshooting assistance. Integrated within the 'antigravity-awesome-skills' collection, this skill is designed to enhance an AI agent's ability to support technical documentation, system design, and communication by translating complex ideas into clear visual representations.
Best use case
Generate visual documentation for software architecture, data flows, or business processes; quickly sketch out complex system interactions; create precise ERDs for database design; visualize user journeys; debug existing Mermaid syntax; obtain best practices for diagram styling and structure.
Create Mermaid diagrams for flowcharts, sequences, ERDs, and architectures. Masters syntax for all diagram types and styling.
Syntactically correct and well-structured Mermaid diagram code for various diagram types; expert explanations, best practices, and actionable troubleshooting steps for Mermaid issues; clear and validated visual representations of technical concepts, processes, or architectures; efficient generation of documentation assets.
Practical example
Example input
Create a Mermaid sequence diagram for a user authentication process: User -> Frontend: Enters credentials; Frontend -> Backend: Sends credentials; Backend -> Database: Queries user data; Database --> Backend: Returns user data; Backend -> Frontend: Sends authentication token; Frontend --> User: Displays dashboard.
Example output
```mermaid
sequenceDiagram
participant User
participant Frontend
participant Backend
participant Database
User->>Frontend: Enters credentials
Frontend->>Backend: Sends credentials
Backend->>Database: Queries user data
Database-->>Backend: Returns user data
Backend->>Frontend: Sends authentication token
Frontend-->>User: Displays dashboard
```
This sequence diagram visualizes the steps involved in a user authentication process, clearly showing the interactions between the user, frontend, backend, and database components.When to use this skill
- When you need to create, interpret, validate, or refine any Mermaid diagram type (e.g., flowchart, sequence, ERD, Gantt, class, state, user journey) from a textual description; when seeking expert guidance, best practices, or troubleshooting for Mermaid syntax and styling; when working on tasks or workflows that benefit from clear visual representations generated as Mermaid code.
When not to use this skill
- When the task requires diagram creation using a tool other than Mermaid (e.g., PlantUML, Graphviz, draw.io); when the task is entirely unrelated to diagram generation, technical visualization, or documentation; when complex image manipulation or graphic design beyond Mermaid's capabilities is required.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/mermaid-expert/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How mermaid-expert Compares
| Feature / Agent | mermaid-expert | Standard Approach |
|---|---|---|
| Platform Support | Claude | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | medium | N/A |
Frequently Asked Questions
What does this skill do?
Create Mermaid diagrams for flowcharts, sequences, ERDs, and architectures. Masters syntax for all diagram types and styling.
Which AI agents support this skill?
This skill is designed for Claude.
How difficult is it to install?
The installation complexity is rated as medium. You can find the installation instructions above.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
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SKILL.md Source
## Use this skill when - Working on mermaid expert tasks or workflows - Needing guidance, best practices, or checklists for mermaid expert ## 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. - If detailed examples are required, open `resources/implementation-playbook.md`. 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 1. Choose the right diagram type for the data 2. Keep diagrams readable - avoid overcrowding 3. Use consistent styling and colors 4. Add meaningful labels and descriptions 5. Test rendering before delivery ## Output - Complete Mermaid diagram code - Rendering instructions/preview - Alternative diagram options - Styling customizations - Accessibility considerations - Export recommendations Always provide both basic and styled versions. Include comments explaining complex syntax.
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