# X_UI_DIFF_PATH_OUTSIDE

## Means

`ui.diff` was handed a path that does not resolve inside `.x/shot/`

## Typical cause

an absolute path, a `..` segment, a sibling directory sharing the prefix's characters, or a symlink under `.x/shot/` pointing out of it. The gate is what lets a file-reading tool sit under `dev:read`: it reads the captures the `ui.*` tools wrote and nothing else, so a read token cannot reach `.env` through a tool that says "diff"

## Fix

`x shot / --json`, then pass the image path it answers, relative to the app root

[MCP and AI](/error-codes#mcp-and-ai)