Enum McpError 

pub enum McpError {
    Io(Error),
    Http(HttpError),
    Serialize(Error),
    Transport(String),
    Protocol(String),
    AuthRequired(Box<AuthRequest>),
    AuthResolution(String),
    Invocation(String),
    UnknownServer(String),
}

Errors produced by MCP transport, protocol, and lifecycle operations.

Variants

Io(Error)

An underlying I/O error (e.g. spawning a child process or reading from a pipe).

Http(HttpError)

An HTTP-level error surfaced by the configured agentkit_http::HttpClient.

Serialize(Error)

A JSON serialization or deserialization error.

Transport(String)

A transport-level error (e.g. unexpected disconnection or bad SSE response).

Protocol(String)

An MCP protocol violation (e.g. missing required fields in a response).

AuthRequired(Box<AuthRequest>)

The server requires authentication before the operation can proceed. Contains the AuthRequest that describes the challenge.

AuthResolution(String)

An error occurred while resolving or replaying authentication.

Invocation(String)

The MCP server returned an error for the invoked method.

UnknownServer(String)

The referenced server ID is not registered in the McpServerManager.

Trait Implementations

impl Debug for McpError

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

Formats the value using the given formatter.

impl Display for McpError

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

Formats the value using the given formatter.

impl Error for McpError

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<Error> for McpError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for McpError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<HttpError> for McpError

fn from(source: HttpError) -> Self

Converts to this type from the input type.