Enum AgentError 

#[non_exhaustive]
pub enum AgentError {
    InvalidCwd(PathBuf),
    McpStartup {
        server: String,
        source: BoxError,
    },
    DuplicateSessionId(SessionId),
    Observer(BoxError),
    SessionNotFound(SessionId),
    ModeNotFound(String),
    Restore(BoxError),
    Init(SessionInitError),
    Other(BoxError),
}

Process-level agent error.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

InvalidCwd(PathBuf)

McpStartup

MCP server failed to start (stdio process could not be launched / SSE connection could not be established).

Fields

server: String

source: BoxError

DuplicateSessionId(SessionId)

The caller-provided SessionId already exists in the session table. A monotonic + timestamp ID generator should theoretically never collide; this is a safety net.

Observer(BoxError)

SessionNotFound(SessionId)

ModeNotFound(String)

The mode_id received by set_mode is not in the session’s mode directory (or the directory is not mounted).

Restore(BoxError)

Init(SessionInitError)

Session capability adjudication failed during startup. See SessionInitError.

Other(BoxError)

Trait Implementations

impl Debug for AgentError

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

Formats the value using the given formatter.

impl Display for AgentError

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

Formats the value using the given formatter.

impl Error for AgentError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<BoxError> for AgentError

fn from(source: BoxError) -> Self

Converts to this type from the input type.

impl From<SessionInitError> for AgentError

fn from(source: SessionInitError) -> Self

Converts to this type from the input type.