Enum A2AError 

pub enum A2AError {
    Transport(String),
    Protocol(String),
    Validation(String),
    Auth(String),
    Task {
        source: TaskError,
    },
    Serialization(Error),
    Timeout,
    TaskNotFound {
        task_id: String,
    },
    AgentNotFound {
        agent_url: String,
    },
    RateLimitExceeded,
    Other(String),
}

Main error type for A2A protocol operations

Variants

Transport(String)

Transport-level error (network, connection, etc.)

Protocol(String)

Protocol-level error (invalid message format, unsupported operation, etc.)

Validation(String)

Validation error (invalid request or response)

Auth(String)

Authentication or authorization error

Task

Task-specific error

Fields

source: TaskError

Serialization(Error)

Serialization/deserialization error

Timeout

Request timeout error

TaskNotFound

Task not found error

Fields

task_id: String

AgentNotFound

Agent not found or unreachable

Fields

agent_url: String

RateLimitExceeded

Rate limit exceeded

Other(String)

Generic error with custom message

Trait Implementations

impl Debug for A2AError

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

Formats the value using the given formatter.

impl Display for A2AError

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

Formats the value using the given formatter.

impl Error for A2AError

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<&str> for A2AError

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<Error> for A2AError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for A2AError

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<String> for A2AError

fn from(s: String) -> Self

Converts to this type from the input type.

impl From<TaskError> for A2AError

fn from(source: TaskError) -> Self

Converts to this type from the input type.