Claude Code error messages, explained
Paste the line your terminal printed and find out what it means. The answers come from reading the strings in the shipped binary, because several of these commands are hidden from the command list and missing from the published documentation.
18 lines indexed across 2 pages. Partial text works, so a few distinctive words from the middle of the line are plenty.
Lower-priority mode isn't available right now.
The offer was never made to your account, so there is nothing to switch on. It does not mean you used up the week's allowance and it does not mean you are in a cool-off, because both of those print a different line.
Repeated 529 Overloaded errors
Anthropic's API is busy across every user and Claude Code has run out of retries. Your key, your plan and your usage limits are all uninvolved.
No match. Try a shorter fragment, or a word from the middle of the line rather than the start.
Why these pages exist
Claude Code prints a lot of one-line refusals that don't say why. Some of them are about your plan, some are about the service being busy, and a couple are about a staged rollout your account isn't part of yet. Telling those apart is the whole job, because the fix is completely different in each case and only one of them is worth sitting and waiting out.
Every page here names the version the strings were read from. Anthropic ships Claude Code most days, and the wording of several of these lines can be changed from the server without a release at all, so treat a mismatch as your copy being newer rather than as our typo.