list_screens returns empty after generate_screen_from_text until project is opened in browser

Stitch
,
1

Screens generated via the Stitch MCP generate_screen_from_text are not queryable through list_screens or get_screen until the project is manually opened in a browser. This breaks automated MCP workflows.

Reproduction:
1. create_project → success
2. generate_screen_from_text → completes without error
3. list_screens → returns {} (empty)
4. get_project → returns valid data including thumbnailScreenshot.downloadUrl (screen exists server-side)
5. Retry list_screens after 25+ seconds → still empty
6. Open project in browser (Stitch - Design with AI)
7. list_screens → screen appears immediately

Observations:
- The screen is generated — get_project exposes its thumbnail. But list_screens cannot see it.
- Time does not resolve it — retried over 25 seconds, no change.
- Unauthenticated curl to the project URL does not help either.
- A single authenticated browser visit instantly makes the screen available via MCP.

Impact:
Any automated pipeline following generate → list → get → download requires manual browser intervention per screen. This breaks end-to-end MCP automation for AI coding tools (Claude Code, Cursor, Gemini CLI, etc.).

Environment: Claude Code CLI, macOS, official Stitch MCP server, GEMINI_3_FLASH, device type MOBILE.

2

Hi @ThisIsSadeghi thank you for bringing this to our attention. We sincerely apologize for the inconvenience. This confirms a state synchronization latency between the Stitch generative backend and the MCP API layer, specifically where the list_screens index remains stale until an authenticated browser session triggers a final commit. We have logged this as a high-priority bug affecting automated MCP workflows

3

Hello @Nilesha_U_J, Thanks for the clarification. How will I be notified once this issue is resolved?

4

Hey @ThisIsSadeghi thanks for your input! We’ll include an update in our next release and I’ll post back here as soon as it’s available.

5

Hi, just following up on this, are there any updates on the fix or timeline?

Thanks in advance!

6

Hey @ThisIsSadeghi, our team has confirmed that they have launched the Design System MCP tools, so they should be available now. Please try using them and let us know if they’re working on your end!