Unverified50% confidenceFactExact time
GUT supports running from the command line; with --headless it can run the full suite in windowless mode and indicate success or failure via exit code 0/1.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/30/2026
First Seen
Valid until: 1/28/2027
Sources
Related Entities
Related Claims
UnverifiedHooks scripts use exit code 0 to allow the action normally and exit code 2 to block the current operation, in which case the standard error output is passed back to the model as the reason for blocking; other non-zero exit codes are usually treated only as the script itself erroring and do not necessarily block.69% similarUnverifiedPlaywright runs in headless mode by default; setting the configuration option headless to false or adding the --headed parameter on the command line switches it to headed mode.66% similarUnverifiedAfter deleting the text_any line from the notool-001 case and testing with only an idle agent (no tool calls, empty text), the result was PASS with exit code 0.66% similarUnverifiedNo-code platforms build applications entirely through drag-and-drop and configuration, with users not needing to write any code.65% similarUnverifiedWhen a coding agent's hook crashes, times out, or points to a nonexistent script, most tools by default choose to let it pass (fail-open).64% similar
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