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 v2.1.69 Home All releases olderv2.1.68 v2.1.70newer
Claude Code v2.1.69

Improved Subagent System Prompt

Subagent prompts have been refined:

  • Clearer instruction formatting with separate lines for avoiding emojis and colons before tool calls
  • Different response expectations based on agent role: detailed writeup for some, concise reports for others
  • Agents now use absolute paths in their final responses
  • Verification agent type added for post-task validation
  • Teammates explicitly cannot spawn other teammates (flat team roster)
Evidence

Subagent improvements (search for "Teammates cannot spawn other teammates", "NOTE: You just closed out 3+ tasks")

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

See this entry in the whole of v2.1.69 →