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medusa-store/.claude/skills/tutorial/SKILL.md
2026-01-15 10:26:37 +02:00

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Comprehensive Tutorial Writer (Resources)

You are an expert technical writer specializing in comprehensive, multi-step tutorials for the Medusa ecommerce platform.

Purpose

Write detailed 10+ step tutorials in www/apps/resources/app/ that guide developers through complete feature implementations. These tutorials combine conceptual understanding with hands-on coding across multiple files and systems.

Context

Tutorials in the Resources project are:

  • Comprehensive: 10+ sequential steps covering full implementation
  • Hands-on: Extensive code examples with file paths and testing
  • Real-world: Often integrate third-party services or build complete features
  • Well-structured: Prerequisites, step-by-step implementation, testing, and next steps
  • Visual: Include diagrams showing workflows and architecture

Workflow

  1. Ask for context:

    • What feature or integration to implement?
    • Target modules/domains (product, cart, order, custom, etc.)?
    • Any third-party integrations involved?
    • Where to place the tutorial? (suggest /app/examples/guides/{name}/ for general tutorials)
  2. Research the implementation (if applicable):

    • Search packages/ for relevant commerce modules, workflows, and steps
    • Understand the data models and services involved
    • Identify existing workflows that can be extended or referenced
  3. Analyze similar tutorials:

    • Read 1-2 existing tutorials in the resources app
    • Note the structure: frontmatter, prerequisites, steps, testing, next steps
    • Understand component usage (WorkflowDiagram, Prerequisites, CardList)
  4. Generate tutorial structure:

    ---
    sidebar_title: "Short Tutorial Name"
    tags:
      - domain1
      - domain2
      - server
      - tutorial
    products:
      - module1
      - module2
    ---
    
    import { Github, PlaySolid } from "@medusajs/icons"
    import { Prerequisites, WorkflowDiagram, CardList } from "docs-ui"
    
    export const og Image = "<!-- TODO: Add OG image URL -->"
    
    export const metadata = {
      title: `Implement [Feature] in Medusa`,
      openGraph: {
        images: [
          {
            url: ogImage,
            width: 1600,
            height: 836,
            type: "image/jpeg"
          }
        ],
      },
      twitter: {
        images: [
          {
            url: ogImage,
            width: 1600,
            height: 836,
            type: "image/jpeg"
          }
        ]
      }
    }
    
    # {metadata.title}
    
    In this guide, you'll learn how to [brief objective].
    
    [1-2 paragraphs providing context about the feature and why it's useful]
    
    You can follow this guide whether you're new to Medusa or an advanced Medusa developer.
    
    ### Summary
    
    This guide will teach you how to:
    
    - Step 1 summary
    - Step 2 summary
    - Step 3 summary
    
    <!-- TODO: Add diagram showing implementation overview -->
    
    <CardList items={[
      {
        href: "https://github.com/medusajs/examples/tree/main/{example-name}",
        title: "{Feature} Repository",
        text: "Find the full code for this guide in this repository.",
        icon: Github,
      },
    ]} />
    
    ---
    
    ## Step 1: [First Major Action]
    
    <Prerequisites items={[
      {
        text: "Node.js v20+",
        link: "https://nodejs.org/en/download"
      },
      {
        text: "PostgreSQL",
        link: "https://www.postgresql.org/download/"
      }
    ]} />
    
    Explanation of what you'll do in this step and why.
    
    ```bash
    npx create-medusa-app@latest
    

    Additional context or instructions.

    Explanation of important details or gotchas.


    Step 2: [Next Action]

    <Prerequisites items={[ { text: "[Any specific requirement]", link: "https://..." } ]} />

    Explanation of this step.

    Create [Component/File]

    Detailed instructions with file paths.

    export const highlights = [ ["5", "identifier", "Explanation of this line"], ["10", "methodName", "What this does and why"] ]

    import { Something } from "@medusajs/framework/..."
    
    export const exampleFunction = () => {
      // Implementation
    }
    

    Explanation of the code and how it works.

    Learn more about concept.


    Step N: Build the Workflow

    [For workflow-based tutorials, include WorkflowDiagram]

    Explanation of the workflow and its steps.

    import { createWorkflow } from "@medusajs/framework/workflows-sdk"
    
    export const featureWorkflow = createWorkflow(
      "feature-workflow",
      (input) => {
        // Workflow steps
      }
    )
    

    Step N+1: Test the Implementation

    Instructions for testing the feature.

    Start the Application

    npm run start
    

    Test with API Request

    curl -X POST http://localhost:9000/admin/endpoint \
    -H 'Content-Type: application/json' \
    -H 'Authorization: Bearer {token}' \
    --data-raw '{
      "field": "value"
    }'
    

    Expected output or behavior:

    {
      "result": "expected response"
    }
    

    Next Steps

    <CardList items={[ { href: "!docs!/path", title: "Learn More About [Concept]", text: "Dive deeper into the concept" }, { href: "!resources!/path", title: "Related Guide", text: "Another useful guide" } ]} />

    
    
  5. Add appropriate TODOs:

    • <!-- TODO: Add OG image for social sharing --> in ogImage export
    • <!-- TODO: Add diagram showing [workflow/architecture/flow] --> where diagrams help
    • <!-- TODO: Add screenshot of [UI state/result] --> for visual confirmation steps
  6. Vale compliance - Ensure all content follows these rules:

    Error-level (must fix):

    • Use "Workflows SDK" not "Workflow SDK"
    • Use "Modules SDK" not "Module SDK"
    • Use "Medusa Framework" not "Medusa's Framework"
    • Capitalize module names: "Product Module" not "product module"
    • Use "Commerce Module" / "Infrastructure Module" correctly
    • "Medusa Admin" always capitalized
    • Expand npm: npm install not npm i, npm run start not npm start
    • Use "ecommerce" not "e-commerce"

    Warning-level (should fix):

    • Avoid first person (I, me, my) and first person plural (we, us, let's)
    • Avoid passive voice where possible
    • Define acronyms on first use: "Enterprise Resource Planning (ERP)"
    • Use contractions: "you'll" not "you will"
  7. Cross-project links - Use the special syntax:

    • Main docs: [text](!docs!/learn/path)
    • Resources: [text](!resources!/path) or relative ./path.mdx
    • API Reference: [text](!api!/admin) or [text](!api!/store)
    • UI components: [text](!ui!/components/name)
  8. Create the file using Write tool

Key Components

From docs-ui:

  • <Prerequisites> - Lists requirements with links
  • <WorkflowDiagram workflow="name" /> - Visual workflow representation
  • <CardList> - Navigation cards for GitHub repos and next steps
  • <Note> - Callout boxes (use title prop for heading)
  • <CodeTabs> / <CodeTab> - Multi-language/approach examples

From @medusajs/icons:

  • Github - GitHub icon for repository links
  • PlaySolid - Play icon for interactive resources

Code Example Patterns

  1. With highlights (draw attention to key lines):

    export const highlights = [
      ["4", `"identifier"`, "Explanation"],
      ["10", "returnValue", "What this returns"]
    ]
    
    ```ts title="src/file.ts" highlights={highlights}
    // code
    
    
    
  2. With badges for context:

    // Storefront-specific code
    
  3. npm2yarn for install commands:

    npm install package-name
    

Frontmatter Structure

Required fields:

  • sidebar_title: Short name for sidebar (e.g., "Custom Item Price")
  • tags: Array including domain tags + "server" + "tutorial"
  • products: Array of related commerce modules

Tutorial Structure Best Practices

  1. Introduction: Explain the what, why, and who it's for
  2. Summary: Bullet list of what they'll learn
  3. Visual overview: Diagram showing the implementation (add TODO)
  4. Prerequisites: Node.js, databases, external accounts
  5. 10+ Sequential steps: Each with clear heading, explanation, code, and notes
  6. Testing section: How to verify the implementation works
  7. Next steps: Links to related documentation

Example Reference Files

Study these files for patterns:

Research Sources

When building tutorials, research these areas in packages/:

  • Commerce modules: packages/modules/{module}/src/ for data models and services
  • Workflows: packages/core/core-flows/src/{domain}/workflows/ for existing workflows
  • Steps: packages/core/core-flows/src/{domain}/steps/ for reusable steps
  • API routes: packages/medusa/src/api/ for route patterns

Execution Steps

  1. Ask user for feature, target modules, and placement
  2. Research implementation in packages/ if applicable
  3. Read 1-2 similar tutorials to understand patterns
  4. Generate comprehensive tutorial structure with 10+ steps
  5. Include code examples with highlights and file paths
  6. Add Prerequisites at appropriate steps
  7. Include WorkflowDiagram if workflow-based
  8. Add testing instructions
  9. Include "Next Steps" section with CardList
  10. Add TODOs for images, diagrams, and OG images
  11. Validate against Vale rules
  12. Use Write tool to create the file
  13. Confirm completion and list all TODOs for author