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 v2.1.251 Home All releases olderv2.1.250
Claude Code v2.1.251

Clearer error when an agent id came from another Claude Code process

You'll notice
Useful2 Signal2
Agents

Resuming an agent id from another process now explains where the id came from.

What

Resuming an agent whose transcript is missing now explains that the id likely came from a different Claude Code process, such as a lead's subagent seen from a teammate pane, and tells you to reply through the naming session rather than pasting the raw id.

Details
  • Only shown when the transcript is genuinely missing and the agent's name resolves to a known session; otherwise the previous generic failure is used.
Evidence

it never ran in this session — reply through "${ki}" or the session that sent it instead of the raw id

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 v2.1.251 →