Struct WorktreeAgentRequest 

pub struct WorktreeAgentRequest<'a> {
    pub subtask: &'a Subtask,
    pub cwd: &'a Path,
    pub allowed_tools: Option<Vec<String>>,
    pub mcp_endpoint: Option<String>,
    pub mcp_config_dir: Option<PathBuf>,
}

Everything an agent needs to run one subtask in a worktree. Carrying the governance surface (allowed_tools, mcp_endpoint) now means the daemon-side impl that wraps car_external_agents::invoke does not force a breaking trait change at B6.

Fields

subtask: &'a Subtask

cwd: &'a Path

allowed_tools: Option<Vec<String>>

mcp_endpoint: Option<String>

mcp_config_dir: Option<PathBuf>

Directory the daemon-side agent writes its short-lived MCP config file into (car_external_agents::InvokeOptions::mcp_config_dir). None keeps the adapter’s original behaviour, a bare tempfile() under $TMPDIR.

$TMPDIR is inherited by the daemon and never checked: a daemon launched with a stale installer-sandbox value cannot create that file, every --mcp-config invocation fails setup, and the session silently runs a different engine (car#1494 / car#1534). car#1534 hardened the coder’s own external loop, which owns a state directory; a farm-out reaches the same adapter through this request, so the session’s already-checked directory has to travel with it.

Only meaningful alongside mcp_endpoint — with no endpoint the adapter writes no config at all, so the directory is never consulted.

Trait Implementations

impl<'a> Debug for WorktreeAgentRequest<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.