Output SDK Folder Structure Conventions

Overview

This skill documents the required folder structure for Output SDK workflows and helps validate/fix structure issues after migration.

When to Use This Skill

After Migration:

• Validating folder structure is correct
• Fixing structure issues
• Renaming files to match conventions

During Setup:

• Creating new workflow directories
• Understanding project organization

Folder Structure Comparison

Flow SDK (Old Structure)

src/
└── workflows/
    └── example_workflow/
        ├── activities.ts      # Activity functions
        ├── helpers.ts         # Optional helpers
        ├── prompts.ts         # JS prompt arrays
        ├── prompts.xml        # XML prompts
        ├── readme.xml         # Documentation
        ├── types.ts           # Type definitions
        └── workflow.ts        # Workflow class

Output SDK (New Structure)

src/
└── workflows/
    └── example_workflow/
        ├── workflow.ts              # Workflow function (export default)
        ├── steps.ts                 # Step definitions
        ├── types.ts                 # Types + Zod schemas
        ├── analyzeDocument@v1.prompt   # Prompt files
        ├── generateSummary@v1.prompt
        └── scenarios/               # Test input files
            ├── basic_input.json
            └── full_options.json

File Naming Conventions

Workflow Folder

• Use

  snake_case

  for folder names
• Match the workflow name

# Correct
user_onboarding/
generate_report/
analyze_document/

# Wrong
userOnboarding/
GenerateReport/
analyze-document/

Core Files

workflow.ts

steps.ts

types.ts

Prompt Files

Format:

{descriptiveName}@{version}.prompt

# Correct
analyzeDocument@v1.prompt
generateSummary@v1.prompt
extractEntities@v2.prompt

# Wrong
analyze.prompt           # Missing version
analyzeDocument.txt      # Wrong extension
analyze-document@v1.md   # Wrong extension

Scenario Files

Format:

{descriptive_name}.json

# Correct
basic_input.json
full_options.json
edge_case_empty.json
question_ada_lovelace.json

# Wrong
test1.json              # Not descriptive
BasicInput.json         # Not snake_case

Required vs Optional Files

Required Files

workflow.ts

steps.ts

types.ts

Optional Files/Folders

*.prompt

scenarios/

helpers.ts

Files to Remove After Migration

activities.ts

steps.ts

prompts.ts

.prompt

prompts.xml

.prompt

readme.xml

Validation Commands

Check Folder Structure

WORKFLOW="src/workflows/my_workflow"

# List all files
ls -la $WORKFLOW/

# Check for required files
[ -f "$WORKFLOW/workflow.ts" ] && echo "✓ workflow.ts" || echo "✗ workflow.ts missing"
[ -f "$WORKFLOW/steps.ts" ] && echo "✓ steps.ts" || echo "✗ steps.ts missing"
[ -f "$WORKFLOW/types.ts" ] && echo "✓ types.ts" || echo "✗ types.ts missing"

# Check for leftover files
[ -f "$WORKFLOW/activities.ts" ] && echo "⚠ activities.ts should be removed" || echo "✓ No activities.ts"
[ -f "$WORKFLOW/prompts.ts" ] && echo "⚠ prompts.ts should be removed" || echo "✓ No prompts.ts"
[ -f "$WORKFLOW/prompts.xml" ] && echo "⚠ prompts.xml should be removed" || echo "✓ No prompts.xml"

Check Folder Naming

# List workflow folders
ls -d src/workflows/*/

# Check for non-snake_case folders
ls -d src/workflows/*/ | while read dir; do
  name=$(basename "$dir")
  if [[ "$name" =~ [A-Z] ]] || [[ "$name" =~ "-" ]]; then
    echo "⚠ Non-snake_case folder: $name"
  fi
done

Check Prompt File Naming

# List prompt files
ls src/workflows/my_workflow/*.prompt 2>/dev/null

# Check for version in prompt names
for f in src/workflows/my_workflow/*.prompt; do
  if [[ ! "$f" =~ @v[0-9]+\.prompt$ ]]; then
    echo "⚠ Missing version: $f"
  fi
done

Fixing Structure Issues

Rename activities.ts to steps.ts

mv src/workflows/my_workflow/activities.ts src/workflows/my_workflow/steps.ts

Create scenarios directory

mkdir -p src/workflows/my_workflow/scenarios

Fix folder naming

# Rename from camelCase to snake_case
mv src/workflows/userOnboarding src/workflows/user_onboarding

Remove old files

rm src/workflows/my_workflow/prompts.ts
rm src/workflows/my_workflow/prompts.xml

Complete Example

Before Migration

src/workflows/userReport/
├── activities.ts
├── helpers.ts
├── prompts.ts
├── prompts.xml
├── readme.xml
├── types.ts
└── workflow.ts

After Migration

src/workflows/user_report/      # Renamed to snake_case
├── workflow.ts                 # Converted to workflow()
├── steps.ts                    # Converted from activities.ts
├── types.ts                    # Added Zod schemas
├── generateReport@v1.prompt    # Converted from prompts.ts
├── formatOutput@v1.prompt
└── scenarios/                  # NEW
    ├── daily_report.json
    ├── weekly_report.json
    └── full_options.json

Project-Wide Structure

src/
├── workflows/
│   ├── user_onboarding/
│   │   ├── workflow.ts
│   │   ├── steps.ts
│   │   ├── types.ts
│   │   ├── welcome@v1.prompt
│   │   └── scenarios/
│   ├── generate_report/
│   │   ├── workflow.ts
│   │   ├── steps.ts
│   │   ├── types.ts
│   │   ├── analyze@v1.prompt
│   │   └── scenarios/
│   └── shared_steps/           # Optional: shared steps
│       └── shared_steps.ts
├── shared/                     # Optional: shared utilities
│   ├── types.ts
│   └── helpers.ts
└── index.ts                    # Exports

Validation Checklist

• Workflow folder uses

  snake_case

• workflow.ts

  exists

• steps.ts

  exists (if workflow has steps)

• types.ts

  exists
• Prompt files use

  name@version.prompt

  format
• No leftover

  activities.ts

• No leftover

  prompts.ts

  or

  prompts.xml

• scenarios/

  directory exists (recommended)
• Scenario files use

  snake_case.json

  format

Related Skills

• flow-validation-checklist

  - Complete migration validation

• flow-create-scenario-files

  - Creating test scenarios

• flow-analyze-workflow-structure

  - Pre-migration analysis