It's stuck or too slow
Sometimes the request hangs, takes too long, or returns incomplete results. Most often, it's due to selection size:
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Selection is too large
Try selecting smaller sections or individual components (e.g. a card, header, sidebar). Large, deeply nested frames can overwhelm the context window and slow things down, or silently fail.
For more details, see 5. Avoid selecting large, heavy frames
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Local model timeout or confusion
If you see an error like "lost connection to MCP server", that's coming from the AI agent. It likely timed out or misinterpreted the context. Retry with a smaller selection or clearer prompt.
Note: Since the MCP server runs locally, it's not affected by traffic. Most slowdowns come from the size of the selection or how the model handles it.