Create flowcharts, sequence diagrams, ERDs, and architecture visualizations in Mermaid syntax.
Works with
Supports 10+ diagram types including flowcharts, sequence diagrams, ERDs, C4 architecture, state machines, Gantt charts, and class diagrams
Includes decision matrix to select appropriate diagram type based on content (processes, APIs, databases, architecture, timelines)
Provides step-by-step workflow from diagram selection through styling, with syntax examples and validation checklists for
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionmermaid-diagram-specialistExecute the skills CLI command in your project's root directory to begin installation:
Fetches mermaid-diagram-specialist from davila7/claude-code-templates and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
Restart Cursor to activate mermaid-diagram-specialist. Access via /mermaid-diagram-specialist in your agent's command palette.
We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.
Skills execute code in your environment. Always review source, verify the publisher, and test in isolation before production.
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Improve work quality by 30-40% with less effort
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Purpose: Expert in creating comprehensive Mermaid diagrams for documentation, architecture visualization, and process mapping
Category: Tech Primary Users: tech-writer, architecture-validator, product-technical, tech-lead
Required:
Optional:
What the skill needs:
Objective: Choose appropriate diagram type for requirements
Available Diagram Types:
Decision Matrix:
Validation:
Output: Selected diagram type
Objective: Create process and decision flow diagrams
Syntax:
flowchart TD
Start([Start]) --> Input[/User Input/]
Input --> Validate{Valid?}
Validate -->|Yes| Process[Process Data]
Validate -->|No| Error[Show Error]
Error --> Input
Process --> Save[(Save to DB)]
Save --> Success[/Success Response/]
Success --> End([End])
Node Shapes:
[Rectangle] - Process step([Rounded]) - Start/End{Diamond} - Decision[/Parallelogram/] - Input/Output[(Database)] - Data storage((Circle)) - ConnectorDirection Options:
TD - Top to DownLR - Left to RightBT - Bottom to TopRL - Right to LeftExample - Booking Flow:
flowchart TD
Start([User Initiates Booking]) --> CheckDates[Check Date Availability]
CheckDates --> Available{Dates Available?}
Available -->|No| ShowError[/Show Unavailable Message/]
ShowError --> End([End])
Available -->|Yes| CreateBooking[Create Pending Booking]
CreateBooking --> Payment[Process Payment]
Payment --> PaymentSuccess{Payment Success?}
PaymentSuccess -->|No| CancelBooking[Cancel Booking]
CancelBooking --> ShowError
PaymentSuccess -->|Yes| ConfirmBooking[Confirm Booking]
ConfirmBooking --> SendEmail[/Send Confirmation Email/]
SendEmail --> SaveDB[(Save to Database)]
SaveDB --> Success[/Show Success/]
Success --> End
Validation:
Output: Process flowchart
Objective: Document API interactions and message flows
Syntax:
sequenceDiagram
actor User
participant Frontend
participant API
participant DB
participant Payment
User->>Frontend: Click "Book"
Frontend->>API: POST /api/bookings
API->>DB: Check availability
DB-->>API: Available
API->>Payment: Process payment
Payment-->>API: Payment successful
API->>DB: Create booking
DB-->>API: Booking created
API-->>Frontend: 201 Created
Frontend-->>User: Show confirmation
Participant Types:
actor - Human userparticipant - System/Servicedatabase - DatabaseArrow Types:
-> - Solid line (synchronous)--> - Dotted line (response)->> - Solid arrow (async message)-->> - Dotted arrow (async response)Example - Authentication Flow:
sequenceDiagram
actor User
participant Frontend
participant API
participant Clerk
participant DB
User->>Frontend: Enter credentials
Frontend->>Clerk: Login request
Clerk->>Clerk: Validate credentials
alt Credentials valid
Clerk-->>Frontend: JWT token
Frontend->>API: Request with token
API->>Clerk: Verify token
Clerk-->>API: Token valid
API->>DB: Fetch user data
DB-->>API: User data
API-->>Frontend: User session
Frontend-->>User: Logged in
else Credentials invalid
Clerk-->>Frontend: Auth error
Frontend-->>User: Show error
end
Validation:
Output: Sequence diagram
Objective: Document database schema and relationships
Syntax:
erDiagram
USER ||--o{ BOOKING : creates
ACCOMMODATION ||--o{ BOOKING : "booked for"
USER {
uuid id PK
string email UK
string name
timestamp created_at
}
BOOKING {
uuid id PK
uuid user_id FK
uuid accommodation_id FK
date check_in
date check_out
enum status
}
ACCOMMODATION {
uuid id PK
string name
text description
decimal price_per_night
}
Relationship Types:
||--|| - One to one||--o{ - One to many}o--o{ - Many to many||--o| - One to zero or oneCardinality Symbols:
|| - Exactly oneo| - Zero or one}o - Zero or more}| - One or moreExample - Full Hospeda ERD:
erDiagram
USER ||--o{ BOOKING : creates
USER ||--o{ REVIEW : writes
USER ||--o{ ACCOMMODATION : owns
ACCOMMODATION ||--o{ BOOKING : "has bookings"
ACCOMMODATION ||--o{ REVIEW : "has reviews"
ACCOMMODATION }o--o{ AMENITY : includes
BOOKING ||--|| PAYMENT : "has payment"
USER {
uuid id PK
string clerk_id UK
string email UK
string name
enum role
timestamp created_at
}
ACCOMMODATION {
uuid id PK
uuid owner_id FK
string name
text description
decimal price_per_night
int max_guests
enum status
}
BOOKING {
uuid id PK
uuid user_id FK
uuid accommodation_id FK
date check_in
date check_out
int guests
enum status
decimal total_price
}
REVIEW {
uuid id PK
uuid user_id FK
uuid accommodation_id FK
int rating
text comment
timestamp created_at
}
PAYMENT {
uuid id PK
uuid booking_id FK
string mercadopago_id UK
decimal amount
enum status
timestamp processed_at
}
AMENITY {
uuid id PK
string name
string icon
}
Validation:
Output: ERD diagram
Objective: Document system architecture at different levels
Context Level (System in environment):
C4Context
title System Context - Hospeda Platform
Person(guest, "Guest", "Tourist looking for accommodation")
Person(owner, "Owner", "Accommodation owner")
System(hospeda, "Hospeda Platform", "Tourism booking platform")
System_Ext(clerk, "Clerk", "Authentication provider")
System_Ext(mercadopago, "Mercado Pago", "Payment processor")
System_Ext(email, "Email Service", "Transactional emails")
Rel(guest, hospeda, "Searches and books", "HTTPS")
Rel(owner, hospeda, "Manages listings", "HTTPS")
Rel(hospeda, clerk, "Authenticates users", "API")
Rel(hospeda, mercadopago, "Processes payments", "API")
Rel(hospeda, email, "Sends notifications", "SMTP")
Container Level (Applications and data stores):
C4Container
title Container - Hospeda Platform
Person(user, "User")
ContainerImplementation Guide
Prerequisites
- ›Claude Desktop or compatible AI client with skill support
- ›Clear understanding of task or problem to solve
- ›Willingness to iterate and refine outputs
Time Estimate
15-45 minutes depending on use case complexity
Steps
- 1Install skill using provided installation command
- 2Test with simple use case relevant to your work
- 3Evaluate output quality and relevance
- 4Iterate on prompts to improve results
- 5Integrate into regular workflow if valuable
Common Pitfalls
- ⚠Expecting perfect results without iteration
- ⚠Not providing enough context in prompts
- ⚠Using skill for tasks outside its intended scope
- ⚠Accepting outputs without review and validation
Best Practices
✓ Do
- +Start with clear, specific prompts
- +Provide relevant context and constraints
- +Review and refine all outputs before using
- +Iterate to improve output quality
- +Document successful prompt patterns
✗ Don't
- −Don't use without understanding skill limitations
- −Don't skip validation of outputs
- −Don't share sensitive information in prompts
- −Don't expect skill to replace human judgment
💡 Pro Tips
- ★Be specific about desired format and style
- ★Ask for multiple options to choose from
- ★Request explanations to understand reasoning
- ★Combine AI efficiency with human expertise
When to Use This
✓ Use when
Use when skill capabilities match your task, clear ROI on time saved, and you can validate outputs. Best for repetitive tasks, learning, and quality improvement.
✗ Avoid when
Avoid when task requires deep expertise you can't validate, involves sensitive decisions, or when learning process is more valuable than speed of completion.
Learning Path
- 1Familiarize yourself with skill capabilities and limitations
- 2Start with low-risk, non-critical tasks
- 3Progress to more complex and valuable use cases
- 4Build expertise through regular use and experimentation
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4.6★★★★★58 reviews- DDaniel Dixit★★★★★Dec 28, 2024
mermaid-diagram-specialist is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
- CChaitanya Patil★★★★★Dec 24, 2024
Useful defaults in mermaid-diagram-specialist — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
- KKwame Wang★★★★★Dec 20, 2024
mermaid-diagram-specialist fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
- MMateo Gupta★★★★★Dec 16, 2024
I recommend mermaid-diagram-specialist for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
- DDiya Park★★★★★Dec 16, 2024
mermaid-diagram-specialist reduced setup friction for our internal harness; good balance of opinion and flexibility.
- NNoor Bhatia★★★★★Nov 19, 2024
mermaid-diagram-specialist has been reliable in day-to-day use. Documentation quality is above average for community skills.
- AAmelia Srinivasan★★★★★Nov 19, 2024
Useful defaults in mermaid-diagram-specialist — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
- PPiyush G★★★★★Nov 15, 2024
mermaid-diagram-specialist is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
- XXiao Rao★★★★★Nov 11, 2024
Registry listing for mermaid-diagram-specialist matched our evaluation — installs cleanly and behaves as described in the markdown.
- CCarlos Thompson★★★★★Nov 7, 2024
Keeps context tight: mermaid-diagram-specialist is the kind of skill you can hand to a new teammate without a long onboarding doc.
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