When btw is available, delegates to btw_tool_agent_subagent() which
provides isolated chat sessions with resumable state. Falls back to
codeagent's own sub-agent loop otherwise.
Usage
agent_tool(
model = "claude-sonnet-4-6",
mode = "default",
rules = list(),
max_turns = 30L,
worktree_isolation = FALSE,
hooks = NULL,
ask_fn = NULL,
async = FALSE
)Arguments
- model
Character. Model for sub-agents (fallback only).
- mode
Character. Permission mode (inherited from parent).
- rules
List. Permission rules (inherited).
- max_turns
Integer. Max turns for sub-agent fallback (default 30).
- worktree_isolation
Logical. Run sub-agent in an isolated git worktree.
- hooks
A HookRegistry or NULL. Fires SubagentStart/Stop on the codeagent fallback sub-agent. Only applies to the fallback implementation; btw subagent handles its own isolation.
- ask_fn
Function or NULL. Parent permission callback. Sub-agents run in "bubble" mode, so any "ask" decision is forwarded to this function.
Value
An ellmer::tool() object.