441 Workflow Patterns E7893632

Workflow Patterns

Patterns for structuring multi-step workflows and decision logic in skills.

Sequential Workflows

Break complex tasks into numbered steps. Give an overview early in SKILL.md so the agent knows the full process before starting.

Filling a PDF form involves these steps:

1. Analyze the form (run analyze_form.py)
2. Create field mapping (edit fields.json)
3. Validate mapping (run validate_fields.py)
4. Fill the form (run fill_form.py)
5. Verify output (run verify_output.py)

For particularly complex workflows, provide a checklist the agent can track:

Copy this checklist and track progress:

- [ ] Step 1: Analyze the form
- [ ] Step 2: Create field mapping
- [ ] Step 3: Validate mapping
- [ ] Step 4: Fill the form
- [ ] Step 5: Verify output

Conditional Workflows

Guide agents through decision points with clear branching:

1. Determine the modification type:

   **Creating new content?** → Follow "Creation workflow" below
   **Editing existing content?** → Follow "Editing workflow" below

2. Creation workflow:
   - Use docx-js library
   - Build document from scratch
   - Export to .docx format

3. Editing workflow:
   - Unpack existing document
   - Modify XML directly
   - Validate after each change
   - Repack when complete

When branches get large, push them into separate reference files:

| Task Type | Read This Reference |
|-----------|-------------------|
| Creating documents | `${CLAUDE_SKILL_ROOT}/references/creation.md` |
| Editing documents | `${CLAUDE_SKILL_ROOT}/references/editing.md` |

Feedback Loops

Use a validate-fix-repeat pattern for tasks where output quality matters:

## Validation loop

1. Make edits to the document
2. Validate immediately: `uv run ${CLAUDE_SKILL_ROOT}/scripts/validate.py`
3. If validation fails:
   - Review the error message
   - Fix the issues
   - Run validation again
4. Only proceed when validation passes

This pattern works for:

• Code generation (lint → fix → re-lint)
• Document editing (validate XML → fix → re-validate)
• Data processing (check schema → fix → re-check)
• Form filling (validate fields → fix → re-validate)

Plan-Validate-Execute

For complex, high-stakes tasks, have the agent create a plan file before executing:

1. Analyze the input and generate `changes.json` with planned modifications
2. Validate the plan: `uv run ${CLAUDE_SKILL_ROOT}/scripts/validate_plan.py changes.json`
3. If validation fails, revise the plan and re-validate
4. Execute the plan: `uv run ${CLAUDE_SKILL_ROOT}/scripts/apply_changes.py changes.json`
5. Verify the result

Benefits:

• Catches errors before changes are applied
• Machine-verifiable intermediate output
• Agent can iterate on the plan without touching originals
• Clear debugging — error messages point to specific plan entries

Use this pattern for: batch operations, destructive changes, complex data transformations.