Use XML Tags

Structure your prompts with XML tags for clarity, accuracy, and flexibility.

XML tags help Prototyper parse your prompts more accurately, leading to higher-quality outputs.

When your prompts involve multiple components like context, instructions, and examples, XML tags can be a game-changer. They provide clear structure that prevents Prototyper from mixing up instructions with examples or context.

Use tags like <requirements>, <example>, and <style> to clearly separate different parts of your prompt.


Why use XML tags?

  • Clarity: Clearly separate different parts of your prompt and ensure your prompt is well structured.
  • Accuracy: Reduce errors caused by Prototyper misinterpreting parts of your prompt.
  • Flexibility: Easily find, add, remove, or modify parts of your prompt without rewriting everything.

Tagging best practices

  1. Be consistent: Use the same tag names throughout your prompts, and refer to those tag names when talking about the content (e.g., Using the design in <reference> tags...).
  2. Nest tags: You should nest tags <outer><inner></inner></outer> for hierarchical content.

Combine XML tags with other techniques like providing examples (<examples>) or step-by-step reasoning (<steps>). This creates structured, high-performance prompts.


Example: Building a dashboard

Without XML tags, Prototyper may misunderstand where your requirements end and examples begin.

Without XML tags:

Build a dashboard for tracking sales metrics. Include revenue, orders, and
customer count. Here's what the competitor dashboard looks like: [description].
Use a clean, modern design with cards for each metric and a chart below.

With XML tags:

Build a dashboard for tracking sales metrics.

<requirements>
- Display three key metrics: Total Revenue, Order Count, Active Customers
- Each metric should be in its own card with an icon
- Include a line chart showing revenue trends over the last 30 days
- Add a table below showing recent orders
</requirements>

<style>
Clean, modern design with subtle shadows. Use a blue accent color for
interactive elements. Cards should have rounded corners and generous padding.
</style>

<reference>
Similar to Stripe's dashboard: metric cards at top, charts in the middle,
recent activity table at the bottom.
</reference>

The structured version clearly separates what you want to build, how it should look, and what to reference.


Common tag patterns

Here are useful XML tag patterns for different scenarios:

For UI components

<component>
  <layout>Sidebar on left, main content on right</layout>
  <elements>Logo, navigation links, user avatar</elements>
  <behavior>Collapsible on mobile</behavior>
</component>

For styling

<style>
  <colors>Primary: #3B82F6, Secondary: #6B7280</colors>
  <typography>Inter font, 16px base size</typography>
  <spacing>8px grid system, 24px section padding</spacing>
</style>

For complex forms

<form>
  <fields>
    - Email (required, validation)
    - Password (required, min 8 chars)
    - Remember me (checkbox, optional)
  </fields>
  <actions>Submit button, "Forgot password" link</actions>
  <validation>Inline error messages below each field</validation>
</form>

When to use XML tags

ScenarioUse XML Tags?
Simple single-component requestOptional
Multi-section layoutRecommended
Complex requirements with stylingHighly recommended
Including reference examplesEssential
Iterating on existing designHelpful for specifying what to keep vs. change