Struct SpawnOptions 

pub struct SpawnOptions {
    pub lazy: bool,
    pub keep_alive_ms: Option<u64>,
    pub card: Option<String>,
    pub circuit_threshold: Option<u32>,
    pub circuit_reset_ms: Option<u64>,
    pub max_restarts: Option<u32>,
    pub restart_window_ms: Option<u64>,
}

Options accepted by spawn. Mirrors the dict surface in harn.mcp.spawn({...}, options).

Fields

lazy: bool

When true, register the server but do not connect eagerly. Defaults to false — spawn always boots so callers get a fail-fast error if the spec is broken.

keep_alive_ms: Option<u64>

Keep-alive grace period (milliseconds) before a fully-released lazy connection is closed. None → close immediately.

card: Option<String>

Optional path or URL to a server card to associate with the registration so mcp_server_card(name) can resolve it later.

circuit_threshold: Option<u32>

Supervision policy overrides. Unset fields fall back to the module-level constants.

circuit_reset_ms: Option<u64>

max_restarts: Option<u32>

restart_window_ms: Option<u64>

Trait Implementations

impl Clone for SpawnOptions

fn clone(&self) -> SpawnOptions

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SpawnOptions

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

Formats the value using the given formatter.

impl Default for SpawnOptions

fn default() -> SpawnOptions

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SpawnOptions

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.