Enum FailureClass 

pub enum FailureClass {
    RateLimited,
    Overloaded,
    UsageLimit,
    Auth,
    ContextExceeded,
    MaxTurns,
    Network,
    Killed,
    NoOutput,
    SpawnFailure,
    UnknownNonZero,
    AgentDeleted,
    LiveElsewhere,
}

Stable failure taxonomy. Wire format is snake_case to match the rest of the agent event surface (frontend/types/srv-types.d.ts).

Variants

RateLimited

Server-side rate limit (HTTP 429). Transient, not the account quota.

Overloaded

API overloaded (HTTP 529). Transient.

UsageLimit

Plan / usage / billing limit reached. Not transient.

Auth

Credentials rejected (HTTP 401).

ContextExceeded

Conversation exceeded the model’s context window.

MaxTurns

Hit the configured --max-turns cap.

Network

Network / connectivity error reaching the API.

Killed

Killed by a signal (OOM killer or external stop).

NoOutput

Exited cleanly but produced no final result.

SpawnFailure

Could not launch the claude binary at all.

UnknownNonZero

Non-zero exit with no recognized cause.

AgentDeleted

The identity spawn gate refused: the pane’s agent was deleted (SpawnGateError::AgentDeleted, #3577). No process ran, and a retry is refused identically — the pane is done.

LiveElsewhere

This agent is running in another AgentMux instance on this host, or was just taken over by one (docs/specs/SPEC_AGENT_SINGLE_LIVE_INSTANCE_2026_09_24.md). No process ran here; a Retry is refused identically while the other instance holds it — the recovery is Take over.

Trait Implementations

impl Clone for FailureClass

fn clone(&self) -> FailureClass

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FailureClass

impl Debug for FailureClass

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FailureClass

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for FailureClass

impl PartialEq for FailureClass

fn eq(&self, other: &FailureClass) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for FailureClass

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FailureClass

impl TS for FailureClass

type WithoutGenerics = FailureClass

If this type does not have generic parameters, then WithoutGenerics should just be Self. If the type does have generic parameters, then all generic parameters must be replaced with a dummy type, e.g ts_rs::Dummy or ().
The only requirement for these dummy types is that EXPORT_TO must be None.

type OptionInnerType = FailureClass

If the implementing type is std::option::Option<T>, then this associated type is set to T. All other implementations of TS should set this type to Self instead.

fn ident(cfg: &Config) -> String

Identifier of this type, excluding generic parameters.

fn docs() -> Option<String>

JSDoc comment to describe this type in TypeScript - when TS is derived, docs are automatically read from your doc comments or #[doc = ".."] attributes

fn name(cfg: &Config) -> String

Name of this type in TypeScript, including generic parameters

fn decl_concrete(cfg: &Config) -> String

Declaration of this type using the supplied generic arguments. The resulting TypeScript definition will not be generic. For that, see TS::decl(). If this type is not generic, then this function is equivalent to TS::decl().

fn decl(cfg: &Config) -> String

Declaration of this type, e.g. type User = { user_id: number, ... }. This function will panic if the type has no declaration.

fn inline(cfg: &Config) -> String

Formats this types definition in TypeScript, e.g { user_id: number }. This function will panic if the type cannot be inlined.

fn inline_flattened(cfg: &Config) -> String

Flatten a type declaration. This function will panic if the type cannot be flattened.

fn visit_generics(v: &mut impl TypeVisitor)

where Self: 'static,

Iterates over all type parameters of this type.

fn output_path() -> Option<PathBuf>

Returns the output path to where T should be exported, relative to the output directory. The returned path does not include any base directory.

fn visit_dependencies(v: &mut impl TypeVisitor)

where Self: 'static,

Iterates over all dependency of this type.

fn dependencies(cfg: &Config) -> Vec<Dependency>

where Self: 'static,

Resolves all dependencies of this type recursively.

fn export(cfg: &Config) -> Result<(), ExportError>

where Self: 'static,

Manually export this type to the filesystem. To export this type together with all of its dependencies, use [TS::export_all].

fn export_all(cfg: &Config) -> Result<(), ExportError>

where Self: 'static,

Manually export this type to the filesystem, together with all of its dependencies. To export only this type, without its dependencies, use [TS::export].

fn export_to_string(cfg: &Config) -> Result<String, ExportError>

where Self: 'static,

Manually generate bindings for this type, returning a String. This function does not format the output, even if the format feature is enabled.