UI Preview Skill
Preview local dev servers and storybooks using Chrome DevTools.
Available Tools
- •
navigate_page- Navigate to a URL - •
take_screenshot- Capture a screenshot of the current page - •
new_page- Open a new browser tab - •
press_key- Press keyboard keys (e.g., scrolling with PageDown, End) - •
evaluate_script- Run JavaScript on the page
Workflow
- •Navigate to the target URL using
navigate_page - •Screenshot the page using
take_screenshot - •Analyze captured screenshots with
look_atfor visual analysis
Local Dev URLs
Check .amp/dev-environment.txt for the running URLs (defaults: web=http://localhost:7001, server=https://localhost:7002).
| Service | Path |
|---|---|
| Web dev server | / |
| Server dev server | / |
| Webview storybook | /storybook |
| Server storybook | /storybook |
Storybooks
Access a specific story directly using the hash: /storybook#${story-title}
The story title is derived from the filename: handoff-story.svelte → #handoff-tool
Webview Storybook (localhost:7001)
Components for the VS Code extension webview UI.
Thread Components:
- •
#thread- Full thread view - •
#streaming-thread- Thread with streaming content - •
#scrollable-thread- Thread with scroll behavior - •
#thread-reply-area- Message input area - •
#thread-status- Thread status indicators - •
#thread-summary- Thread summary view - •
#thread-hints- Thread hint suggestions - •
#thread-environment-input- Environment input
Tool Calls:
- •
#bash- Bash tool output - •
#edit-file- File edit diffs - •
#create-file- File creation - •
#read- File read output - •
#grep- Search results - •
#glob- File glob results - •
#handoff-tool- Handoff tool states - •
#mermaid- Diagram rendering - •
#oracle-tool- Oracle tool output - •
#task-tool- Task tool output - •
#web-search- Web search results
Editor & Input:
- •
#prompt-editor- Message input editor - •
#mention-menu- @mention autocomplete - •
#combobox- Combobox component - •
#agent-mode-selector- Agent mode picker
Diff Viewer:
- •
#diff-viewer- Side-by-side diff - •
#diff-display- Inline diff display - •
#unified-diff- Unified diff format
Settings:
- •
#settings-page- Settings page - •
#settings-error-modal- Error modal - •
#sign-in-page- Authentication page
Layout:
- •
#layout-navbar- Navigation bar - •
#current-thread-navbar-item- Thread nav item
Server Storybook (localhost:7002)
Components for the ampcode.com web app.
Thread Management:
- •
#thread-feed- Thread list feed - •
#thread-feed-item- Individual thread item - •
#thread-feed-list- Virtualized thread list - •
#thread-actions- Thread action buttons - •
#thread-visibility- Visibility settings - •
#thread-visibility-edit- Edit visibility - •
#thread-page- Full thread page - •
#thread-open-in-button- Open in editor button - •
#pull-request-badge- PR badge display
Settings:
- •
#settings-access-token-section- API tokens - •
#settings-advanced-section- Advanced settings - •
#settings-client-section- Client settings - •
#billing-section- Billing info - •
#amp-free-section- Free tier info - •
#code-host-connections-section- GitHub/GitLab connections
User & Profile:
- •
#avatar- User avatar - •
#profile-card- Profile card - •
#profile-dropdown- Profile menu - •
#user-display- User name display
Dashboard:
- •
#welcome- Welcome page - •
#usage-by-day- Usage metrics
UI Components:
- •
#amp-logo- Logo variants - •
#badge-single- Single badge - •
#badge-group- Badge group - •
#copyable-text- Copy-to-clipboard text - •
#colors- Color palette - •
#icons- Icon set
OG Images:
- •
#og-images- Social preview images
Tips
- •Story titles use kebab-case from filenames (remove
-story.svelte) - •Reload the skill if MCP tools become unavailable
- •Use
list_pagesto manage multiple browser tabs - •Use
press_keywith "End" or "PageDown" to scroll the page - •Use
evaluate_scriptfor custom page interactions