Previously, when a credits_required error was returned, the overage-disabled reason was read only from the anthropic-ratelimit-unified-overage-disabled-reason response header or from a cached value. The parser now also extracts disabled_reason from the error body JSON, providing a more reliable source of the reason and reducing cases where the wrong message was shown.
Evidence
new field extraction (search for "credits_required" in the 429 error handler and the overageDisabledReason property)
Strings lifted out of the shipped bundle, so the claim above can be checked against them.