Struct McpError 

pub struct McpError {
    pub error_type: ErrorType,
    pub code: String,
    pub message: String,
    pub details: HashMap<String, Value>,
    pub cause: Option<Box<dyn Error + Send + Sync>>,
}

Rich MCP error with context

Fields

error_type: ErrorType

Error type

code: String

Error code (string identifier)

message: String

Error message

details: HashMap<String, Value>

Additional details

cause: Option<Box<dyn Error + Send + Sync>>

Underlying cause

Implementations

impl McpError

pub fn to_jsonrpc(&self) -> JsonRpcError

Convert to JSON-RPC error

pub fn builder( error_type: ErrorType, code: impl Into<String>, ) -> McpErrorBuilder

Start building a new error

pub fn validation(code: impl Into<String>, message: impl Into<String>) -> Self

Create a validation error

pub fn not_found(code: impl Into<String>, message: impl Into<String>) -> Self

Create a not found error

pub fn internal(code: impl Into<String>, message: impl Into<String>) -> Self

Create an internal error

pub fn method_not_found(method: impl Into<String>) -> Self

Create a method not found error

pub fn not_implemented(message: impl Into<String>) -> Self

Create a not implemented error

pub fn rate_limited(message: impl Into<String>) -> Self

Create a rate limited error

pub fn circuit_open( tool_name: impl Into<String>, message: impl Into<String>, ) -> Self

Create a circuit breaker open error

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, f: &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.