What
A tool call is a request Claude makes to use a tool. When a cloud session sends one to a remote machine and that machine refuses it, the error Claude sees is now much shorter. It says the machine refused and is not accepting calls from cloud sessions right now. The earlier message said the machine could not be reached, that the call did not run, and gave advice about retrying.
Why
Claude gets a clearer reason for the refusal when a call from the cloud to a machine is turned down.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The old message still exists elsewhere, so whether it was replaced or a separate new message was added is not settled.