Struct JsonRpcRequest 

pub struct JsonRpcRequest {
    pub jsonrpc: String,
    pub id: u64,
    pub method: String,
    pub params: Option<Value>,
}

A JSON-RPC 2.0 request message.

Represents a request sent from client to server, containing a method name and optional parameters. All MCP requests are wrapped in this structure.

Fields

• jsonrpc - Protocol version, always “2.0”
• id - Unique request identifier for matching responses
• method - The method name to invoke (e.g., “tools/list”)
• params - Optional parameters for the method

Example

let request = JsonRpcRequest::new(1, "tools/list", None);

Fields

jsonrpc: String

JSON-RPC protocol version (always “2.0”)

id: u64

Unique identifier for this request

method: String

Name of the method to invoke

params: Option<Value>

Optional parameters for the method call

Implementations

impl JsonRpcRequest

pub fn new(id: u64, method: impl Into<String>, params: Option<Value>) -> Self

Creates a new JSON-RPC request with the specified parameters.

Arguments

• id - Unique identifier for this request
• method - The method name to invoke
• params - Optional parameters (can be None)

Example

let request = JsonRpcRequest::new(1, "tools/call", Some(json!({"name": "test"})));

Trait Implementations

impl Clone for JsonRpcRequest

fn clone(&self) -> JsonRpcRequest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JsonRpcRequest

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for JsonRpcRequest

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for JsonRpcRequest

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

where __S: Serializer,

Serialize this value into the given Serde serializer.