Source Intelligence

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.

All of v2.1.213 Home All releases olderv2.1.212 v2.1.214newer
Claude Code v2.1.213

SDK Protocol: aborted Field on Assistant Messages

What

The SDK wire schema now includes an optional aborted: true field on assistant messages that were cut short by an interrupt or abort before the stream completed.

Details
  • Present when stop_reason was never received and content may end mid-word
  • Absent on normally completed messages
  • Allows SDK hosts to visually distinguish truncated responses from complete ones
Evidence

Schema addition (search for "True when this assistant message was truncated by an interrupt/abort")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.213 →