Source Intelligence
Follow Discord

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 v2.1.23 Home All releases ←olderv2.1.22 v2.1.25newer→
Claude Code v2.1.23

Dynamic Skills Loading via Attachments

What

Skills can now be loaded dynamically and sent to the model via attachments rather than in the initial prompt.

Details
  • Reduces initial prompt size by loading skills on-demand
  • Logs: Sending N skills via attachment (initial/dynamic, X total sent)
  • Skills are formatted with a header: "The following skills are available for use with the Skill tool"
Evidence

Skills handling at line 463656 (contains "skills via attachment", "The following skills are available for use with the Skill tool")

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

See this entry in the whole of v2.1.23 →