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.
Agent Teams (TeammateTool, SendMessage, spawnTeam) now checks plan eligibility before allowing team operations. Users on ineligible plans receive a clear error message instead of a silent failure.
Evidence
Plan check for Agent Teams (search for "Agent Teams is not yet available on your plan.")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
