Function call

src/tools/AgentTool/AgentTool.tsx:239–1263

({
    prompt,
    subagent_type,
    description,
    model: modelParam,
    run_in_background,
    name,
    team_name,
    mode: spawnMode,
    isolation,
    cwd
  }: AgentToolInput, toolUseContext, canUseTool, assistantMessage, onProgress?)

    return outputSchema();
  },
  async call({
    prompt,
    subagent_type,
    description,
    model: modelParam,
    run_in_background,
    name,
    team_name,
    mode: spawnMode,
    isolation,
    cwd
  }: AgentToolInput, toolUseContext, canUseTool, assistantMessage, onProgress?) {
    const startTime = Date.now();
    const model = isCoordinatorMode() ? undefined : modelParam;

    // Get app state for permission mode and agent filtering
    const appState = toolUseContext.getAppState();
    const permissionMode = appState.toolPermissionContext.mode;
    // In-process teammates get a no-op setAppState; setAppStateForTasks
    // reaches the root store so task registration/progress/kill stay visible.
    const rootSetAppState = toolUseContext.setAppStateForTasks ?? toolUseContext.setAppState;

    // Check if user is trying to use agent teams without access
    if (team_name && !isAgentSwarmsEnabled()) {
      throw new Error('Agent Teams is not yet available on your plan.');
    }

    // Teammates (in-process or tmux) passing `name` would trigger spawnTeammate()
    // below, but TeamFile.members is a flat array with one leadAgentId — nested
    // teammates land in the roster with no provenance and confuse the lead.
    const teamName = resolveTeamName({
      team_name
    }, appState);
    if (isTeammate() && teamName && name) {
      throw new Error('Teammates cannot spawn other teammates — the team roster is flat. To spawn a subagent instead, omit the `name` parameter.');
    }
    // In-process teammates cannot spawn background agents (their lifecycle is
    // tied to the leader's process). Tmux teammates are separate processes and
    // can manage their own background agents.
    if (isInProcessTeammate() && teamName && run_in_background === true) {
      throw new Error('In-process teammates cannot spawn background agents. Use run_in_background=false for synchronous subagents.');
    }

    // Check if this is a multi-agent spawn request
    // Spawn is triggered when team_name is set (from param or context) and name is provided
    if (teamName && name) {
      // Set agent definition color for grouped UI display before spawning
      const agentDef = subagent_type ? toolUseContext.options.agentDefinitions.activeAgents.find(a => a.agentType === subagent_type) : undefined;
      if (agentDef?.color) {
        setAgentColor(subagent_type!, agentDef.color);
      }
      const result = await spawnTeammate({
        name,
        prompt,
        description,
        team_name: teamName,
        use_splitpane: true,
        plan_mode_required: spawnMode === 'plan',