What
A bearer token is a credential sent with each request to prove who is calling. The part of Claude Code that holds settings it manages itself can now also store two kinds of callback, which are functions it calls later:
resolveBearerToken, which gets a bearer token when one is needed.onResponse, which is told about responses.
Why
Cloud-hosted setups can supply credentials when a request is made instead of fixing them in advance, and can react to what comes back.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say who registers these callbacks or whether users can configure them.