You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
Thinking DisplayArea: what it touches
ImprovementsKind: in v2.1.285,
What probably matters to youSection of the release
What
The SDK (the kit for driving Claude Code from your own program) can send a set_max_thinking_tokens request to change the thinking budget (max_thinking_tokens) and how thinking is shown (thinking_display). The request is now checked as a whole:
Validation: max_thinking_tokens and thinking_display are checked together. If the check fails, the reply is set_max_thinking_tokens: part of the request refused.
"highlights": asking for thinking_display "highlights" produces a message that it "was not applied", and the display stays as it was. The accepted values are "summarized" and "omitted".
Why
If your program changes thinking settings, part of a request can now be rejected. Check the reply rather than assuming the new display setting took effect, and use "summarized" or "omitted".
Read from
Names in the bundlethinking_display
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is unclear whether this message can be reached in normal use.
