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 v2.1.76 Home All releases olderv2.1.75 v2.1.77newer
Claude Code v2.1.76

Cancel Async Message [In Development]

What

Ability to cancel a pending async user message from the command queue by UUID.

Status

Infrastructure added

Details
  • Operation: cancel_async_message drops a pending message that hasn't been dequeued yet
  • Result includes cancelled boolean: false means the message was already dequeued or never enqueued
  • Related to Remote Control bridge functionality
Evidence

Async message cancellation (search for "cancel_async_message", "Drops a pending async user message")

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

See this entry in the whole of v2.1.76 →