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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.

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Claude Code v2.1.16

Dynamic Team Joining

What

Agents can discover and request to join existing teams, with leaders approving or rejecting requests.

Usage
# Discover available teams
> Use TeammateTool with operation "discoverTeams"

# Request to join a team
> Use TeammateTool with operation "requestJoin", team_name "my-project", proposed_name "helper"

# Leader approves the request
> Use TeammateTool with operation "approveJoin", target_agent_id "helper", request_id "join-123"
Details
  • discoverTeams lists teams from ~/.claude/teams/ that you can join
  • requestJoin sends a join request to the team leader
  • Leader receives join_request message and uses approveJoin or rejectJoin
  • Configurable timeout for join requests (default 60 seconds)
Evidence

rY2() (requestJoin handler), oY2() (approveJoin handler), aY2() (rejectJoin handler) with operations "requestJoin", "approveJoin", "rejectJoin"

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 v2.1.16 →