Struct JsonRpcError 

pub struct JsonRpcError {
    pub code: i32,
    pub message: String,
    pub data: Option<Value>,
}

JSON-RPC error structure per MCP 2025-06-18 specification

Fields

code: i32

The error type that occurred

message: String

A short description of the error (should be limited to a concise single sentence)

data: Option<Value>

Additional information about the error (detailed error information, nested errors, etc.)

Implementations

impl JsonRpcError

pub fn new(code: i32, message: String) -> Self

Create a new JSON-RPC error

pub fn with_data(code: i32, message: String, data: Value) -> Self

Create a new JSON-RPC error with additional data

pub fn parse_error() -> Self

Create a parse error

pub fn invalid_request() -> Self

Create an invalid request error

pub fn method_not_found(method: &str) -> Self

Create a method not found error

pub fn invalid_params(details: &str) -> Self

Create an invalid params error

pub fn internal_error(details: &str) -> Self

Create an internal error

Trait Implementations

impl Clone for JsonRpcError

fn clone(&self) -> JsonRpcError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JsonRpcError

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for JsonRpcError

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for JsonRpcError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for JsonRpcError

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for JsonRpcError

impl StructuralPartialEq for JsonRpcError