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 v2.1.247 Home All releases olderv2.1.246 v2.1.248newer
Claude Code v2.1.247

Background task text is escaped before it reaches the prompt

You'll notice
Useful2 Signal3
Background Tasks

Background task names and errors are escaped before reaching the model, limiting what they can instruct.

What

Task descriptions, IDs, terminal summaries and errors are escaped before being placed into the prompt, including the system reminder listing tasks stopped by a container restart. This limits what task metadata can do to the model's instructions.

Details
  • Applies both to the restart notice and to the summary and error text written when a task finishes.
Evidence

The container was restarted. The following background tasks were running and are now stopped:

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.247 →