DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
Six known API error messages are reported verbatim in telemetry
Under the hood
Useful2Signal2
Telemetry
Six known API errors, including expired tokens, keep their real text in error reports.
What's wrong with this entry?
Anonymous. No account, no email.
What
Error telemetry usually replaces the server's message with a generic type-and-status string. A fixed allowlist now exempts six messages, including expired OAuth tokens and oversize requests, so those failures stay distinguishable in aggregate.
Evidence
"OAuth access token has expired. Re-authenticate to continue."
Strings lifted out of the shipped bundle, so the claim above can be checked against them.