The feature that appended a verbose JSON schema dump to tool results after multiple consecutive InputValidationError responses (the "This call has now failed validation N times in a row. The tool's input schema is: …" message) has been removed. Tool input errors are now handled without the repeated schema echo, reducing noise and token consumption.
Evidence
Removed Bfi() function — search for removed string "This call has now failed validation"
Strings lifted out of the shipped bundle, so the claim above can be checked against them.