Struct CallToolResult 

pub struct CallToolResult {
    pub meta: Option<ResultMetaObject>,
    pub content: Vec<ContentBlock>,
    pub is_error: Option<bool>,
    pub result_type: String,
    pub structured_content: Option<Value>,
}

The result returned by the server for a CallToolRequesttools/call request.

Fields

meta: Option<ResultMetaObject>

content: Vec<ContentBlock>

A list of content objects that represent the unstructured result of the tool call.

is_error: Option<bool>

Whether the tool call ended in an error.

If not set, this is assumed to be false (the call was successful).

Any errors that originate from the tool SHOULD be reported inside the result object, with isError set to true, not as an MCP protocol-level error response. Otherwise, the LLM would not be able to see that an error occurred and self-correct.

However, any errors in finding the tool, an error indicating that the server does not support tool calls, or any other exceptional conditions, should be reported as an MCP error response.

result_type: String

Indicates the type of the result, which allows the client to determine how to parse the result object.

Servers implementing this protocol version MUST include this field. For backward compatibility, when a client receives a result from a server implementing an earlier protocol version (which does not include resultType), the client MUST treat the absent field as "complete".

structured_content: Option<Value>

An optional JSON value that represents the structured result of the tool call.

This can be any JSON value (object, array, string, number, boolean, or null) that conforms to the tool’s outputSchema if one is defined.

Implementations

impl CallToolResult

pub fn new(content: Vec<ContentBlock>, result_type: String) -> CallToolResult

Creates a value from its required fields; optional fields are None.

Trait Implementations

impl Clone for CallToolResult

fn clone(&self) -> CallToolResult

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CallToolResult

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CallToolResult

fn deserialize<__D>( __deserializer: __D, ) -> Result<CallToolResult, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<CallToolResult> for CallToolResultResponseResult

fn from(v: CallToolResult) -> CallToolResultResponseResult

Converts to this type from the input type.

impl IntoToolResult for CallToolResult

fn into_tool_result(self) -> ToolResult

Performs the conversion.

fn output_schema() -> Option<Map<String, Value>>

The outputSchema advertised for this return type, if any.

impl PartialEq for CallToolResult

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for CallToolResult

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for CallToolResult