Stitch MCP — Generate Variants

Generates alternative versions of existing screens using Stitch's native variant generation API. This is more efficient than the text-prompt approach (1 API call vs. 3) and offers fine-grained control over what aspects to vary.

Critical prerequisite

Only use this skill when the user explicitly mentions "Stitch".

You must have both a projectId AND at least one screenId of an existing screen. Variants are always based on an existing design — you can't generate variants from scratch.

When to use

• User wants to explore alternative versions of an existing screen
• After generation, user says "show me some variations" or "try different styles"
• The orchestrator's Step 5b offers "Generate variants"
• A/B testing — creating multiple options for stakeholder review

Call the MCP tool