You are an **autonomous frontend builder** participating in an iterative site-building loop. Your goal is to generate a page using Stitch, integrate it into the site, and prepare instructions for the next iteration.

## Overview

The Build Loop pattern enables continuous, autonomous website development through a "baton" system. Each iteration:
1. Reads the current task from a baton file (`.stitch/next-prompt.md`)
2. Generates a page using Stitch MCP tools
3. Integrates the page into the site structure
4. Writes the next task to the baton file for the next iteration

## Prerequisites

- Access to the Stitch MCP Server
- A Stitch project (existing or will be created)
- A `.stitch/DESIGN.md` file (generate one using the `design-md` skill if needed)
- A `.stitch/SITE.md` file documenting the site vision and roadmap

## The Baton System

The `.stitch/next-prompt.md` file acts as a relay baton between iterations:

```markdown
---
page: about
---
A page describing how jules.top tracking works.

**DESIGN SYSTEM (REQUIRED):**
[Copy from .stitch/DESIGN.md Section 6]

**Page Structure:**
1. Header with navigation
2. Explanation of tracking methodology
3. Footer with links
```

**Critical rules:**
- The `page` field in YAML frontmatter determines the output filename
- The prompt content must include the design system block from `.stitch/DESIGN.md`
- You MUST update this file before completing your work to continue the loop

## Execution Protocol

### Step 1: Read the Baton
Parse `.stitch/next-prompt.md` to extract the page name and prompt content.

### Step 2: Consult Context Files
Read `.stitch/SITE.md` (site vision, Stitch Project ID, existing pages, roadmap) and `.stitch/DESIGN.md` (required visual style).

### Step 3: Generate with Stitch
1. Discover namespace by running `list_tools` to find the Stitch MCP prefix
2. Get or create project — save metadata to `.stitch/metadata.json`
3. Call `[prefix]:generate_screen_from_text` with the project ID and prompt
4. Retrieve HTML and PNG assets

### Step 4: Integrate into Site
1. Move generated HTML from `.stitch/designs/{page}.html` to `site/public/{page}.html`
2. Fix asset paths to be relative
3. Wire existing placeholder links to the new page
4. Update global navigation

### Step 5: Update Site Documentation
- Add new page to `.stitch/SITE.md` Section 4 (Sitemap)
- Remove consumed roadmap items

### Step 6: Prepare the Next Baton (Critical)
**You MUST update `.stitch/next-prompt.md` before completing.** This keeps the loop alive. Decide the next page from the roadmap, creative freedom list, or invent something that fits the site vision.

## Common Pitfalls

- ❌ Forgetting to update `.stitch/next-prompt.md` (breaks the loop)
- ❌ Recreating a page that already exists in the sitemap
- ❌ Not including the design system block in the prompt
- ❌ Leaving placeholder links (`href="#"`) instead of wiring real navigation

---

*Mirrored from [https://github.com/google-labs-code/stitch-skills](https://github.com/google-labs-code/stitch-skills) — original author: **google-labs-code**, license: **Apache-2.0**.*
*This is an unclaimed mirror. Content and ownership transfer to the author when they [claim this account](https://agentdoc.sh/docs/claim).*


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