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 v2.1.218 Home All releases ←olderv2.1.217 v2.1.219newer→
Claude Code v2.1.218

Skill Frontmatter: background Field for Fork Skills

What

Skills with context: fork can now specify background: false to run the forked agent inline (blocking the turn) rather than as a background task that reports via task notification.

Details
  • Default behavior (background: true or omitted): fork dispatches as a background agent and returns a task notification
  • background: false: the caller waits for the fork result in-line, same as a regular agent call
  • Useful when a skill needs the fork result before continuing
Evidence

New frontmatter field (search for "Only for \context: fork\. Forks run as background agents")

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

See this entry in the whole of v2.1.218 →