Struct CallToolRequestParams 

pub struct CallToolRequestParams {
    pub arguments: Option<Map<String, Value>>,
    pub input_responses: Option<InputResponses>,
    pub meta: RequestMetaObject,
    pub name: String,
    pub request_state: Option<String>,
}

Latest MCP Protocol 2026_07_28 Parameters for a tools/call request.

JSON schema

{
 "description": "Parameters for a tools/call request.",
 "type": "object",
 "required": [
   "_meta",
   "name"
 ],
 "properties": {
   "_meta": {
     "$ref": "#/$defs/RequestMetaObject"
   },
   "arguments": {
     "description": "Arguments to use for the tool call.",
     "type": "object",
     "additionalProperties": {}
   },
   "inputResponses": {
     "$ref": "#/$defs/InputResponses"
   },
   "name": {
     "description": "The name of the tool.",
     "type": "string"
   },
   "requestState": {
     "type": "string"
   }
 }
}

Fields

arguments: Option<Map<String, Value>>

Arguments to use for the tool call.

input_responses: Option<InputResponses>

meta: RequestMetaObject

name: String

The name of the tool.

request_state: Option<String>

Implementations

impl CallToolRequestParams

pub fn new<T>(tool_name: T, meta: RequestMetaObject) -> Self

where T: ToString,

pub fn with_arguments(self, arguments: Map<String, Value>) -> Self

impl CallToolRequestParams

pub fn with_input_responses(self, input_responses: InputResponses) -> Self

Sets the resolved inputResponses for retrying this request after an input_required result.

pub fn with_request_state<T: Into<String>>(self, request_state: T) -> Self

Sets the opaque requestState returned by the server, so it can correlate the retry with the original request.

Trait Implementations

impl Clone for CallToolRequestParams

fn clone(&self) -> CallToolRequestParams

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CallToolRequestParams

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CallToolRequestParams

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CallToolRequestParams

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

where __S: Serializer,

Serialize this value into the given Serde serializer.