Struct AssistantRuntime 

pub struct AssistantRuntime {
    pub runtime: Runtime,
    pub tools: Vec<Value>,
    pub description: String,
    pub identity: AssistantIdentity,
    pub sandboxed: bool,
    pub gated_tools: Vec<String>,
    pub proactive_memory: Arc<MemoryTools>,
    pub tool_memory: Arc<ToolMemory>,
    pub fallback_notice: Option<String>,
    pub browser: Arc<BrowserTools>,
    pub todos: Arc<Mutex<TodoList>>,
}

Fields

runtime: Runtime

The configured runtime (validator + policy + tiers + event log), whose tool executor is the GeneralExecutor.

tools: Vec<Value>

The model-visible tools (from GeneralExecutor::all_tool_defs()).

description: String

Environment description for the system prompt: the one-line substrate sentence, plus — on a local (non-sandboxed) session — an appended names-only, depth-bounded workspace snapshot (F7/L1).

identity: AssistantIdentity

The name this user chose for the assistant, plus the spoken aliases it answers to. Loaded once here rather than at each prompt-building call site, so every entry mode — one-shot, REPL, MCP, the coder’s discussion — agrees on who the agent is. Falls back to the shipped default when identity.json is missing or unreadable; car identity is the surface that reports a broken record.

sandboxed: bool

Whether execution is isolated in a container.

gated_tools: Vec<String>

Tools that require human approval before running under the standing tier (writes/shell on the local host without --full-access); empty when the tier auto-allows everything. Feed into AssistantConfig::gated_tools.

proactive_memory: Arc<MemoryTools>

Shared assistant memory bank used by the loop’s proactive memory pass and by the model-visible remember / recall tools.

tool_memory: Arc<ToolMemory>

The run’s learned tool repairs — which call recovered which kind of tool failure, durable across sessions. Separate from proactive_memory on purpose: that bank holds facts about the USER, this one holds procedural trivia about the TOOLS, and mixing them would put shell::exit_1 in front of a question about their dog. See tool_memory.

fallback_notice: Option<String>

If the sandbox was requested but unavailable, why we fell back to local.

browser: Arc<BrowserTools>

The run’s browser (Chromium still un-launched until the first browse call). Exposed so the daemon can publish it as a browser.view.* view for the drawer to watch and drive — the drawer has to reach the browser an agent ACTUALLY uses, and this is the only handle on it.

todos: Arc<Mutex<TodoList>>

The run’s task list (Parslee-ai/car#814), shared with the executor that todo_write mutates. Exposed because rendering it is the loop’s job: #814 item 2 (a per-turn state block) is the consumer, and without a handle here that change could not reach the state it needs to render.