get_screen returns incomplete screen data — missing theme, designMd, screenMetadata

[icebear0828]

Summary

get_screen returns only 7 fields for a screen resource, while generate_screen_from_text returns 14 fields for the same screen. This means theme.designMd (and other metadata) is only available immediately after generation and cannot be retrieved later.

Evidence

Tested against the live MCP server (stitch.googleapis.com/mcp):

── generate_screen_from_text ──
keys: designSystem, deviceType, generatedBy, height, htmlCode, id, name, prompt,
      screenMetadata, screenType, screenshot, theme, title, width  (14 fields)
has theme.designMd? true  (5809 chars)

── get_screen (same screen) ──  
keys: deviceType, height, htmlCode, name, screenshot, title, width  (7 fields)
has theme? false

Missing fields in get_screen

Field	In generate	In get_screen
theme (designMd)	✅	❌
designSystem	✅	❌
screenMetadata	✅	❌
prompt	✅	❌
generatedBy	✅	❌
screenType	✅	❌
id	✅	❌

Impact

• SDK users who cache the Screen object from generate() get designMd. Users who later retrieve the screen via get_screen / project.getScreen() do not.
• The web UI at stitch.withgoogle.com can display design.md — likely because it caches from the generate response. But any fresh client cannot access it.
• A GET endpoint for a resource should return its complete representation.

Environment

• @google/stitch-sdk v0.0.3
• MCP server: stitch.googleapis.com/mcp