Struct ToolResultContent 

pub struct ToolResultContent {
    pub content: Vec<ContentBlock>,
    pub is_error: Option<bool>,
    pub meta: Option<Map<String, Value>>,
    pub structured_content: Option<Map<String, Value>>,
    pub tool_use_id: String,
    /* private fields */
}

The result of a tool use, provided by the user back to the assistant.

JSON schema

{
 "description": "The result of a tool use, provided by the user back to the assistant.",
 "type": "object",
 "required": [
   "content",
   "toolUseId",
   "type"
 ],
 "properties": {
   "_meta": {
     "description": "Optional metadata about the tool result. Clients SHOULD preserve this field when\nincluding tool results in subsequent sampling requests to enable caching optimizations.\n\nSee [General fields: _meta](https://modelcontextprotocol.io/specification/2025-11-25/basic/index#meta) for notes on _meta usage.",
     "type": "object",
     "additionalProperties": {}
   },
   "content": {
     "description": "The unstructured result content of the tool use.\n\nThis has the same format as CallToolResult.content and can include text, images,\naudio, resource links, and embedded resources.",
     "type": "array",
     "items": {
       "$ref": "#/$defs/ContentBlock"
     }
   },
   "isError": {
     "description": "Whether the tool use resulted in an error.\n\nIf true, the content typically describes the error that occurred.\nDefault: false",
     "type": "boolean"
   },
   "structuredContent": {
     "description": "An optional structured result object.\n\nIf the tool defined an outputSchema, this SHOULD conform to that schema.",
     "type": "object",
     "additionalProperties": {}
   },
   "toolUseId": {
     "description": "The ID of the tool use this result corresponds to.\n\nThis MUST match the ID from a previous ToolUseContent.",
     "type": "string"
   },
   "type": {
     "type": "string",
     "const": "tool_result"
   }
 }
}

Fields

content: Vec<ContentBlock>

The unstructured result content of the tool use. This has the same format as CallToolResult.content and can include text, images, audio, resource links, and embedded resources.

is_error: Option<bool>

Whether the tool use resulted in an error. If true, the content typically describes the error that occurred. Default: false

meta: Option<Map<String, Value>>

Optional metadata about the tool result. Clients SHOULD preserve this field when including tool results in subsequent sampling requests to enable caching optimizations. See General fields: _meta for notes on _meta usage.

structured_content: Option<Map<String, Value>>

An optional structured result object. If the tool defined an outputSchema, this SHOULD conform to that schema.

tool_use_id: String

The ID of the tool use this result corresponds to. This MUST match the ID from a previous ToolUseContent.

Implementations

impl ToolResultContent

pub fn new( content: Vec<ContentBlock>, tool_use_id: String, is_error: Option<bool>, meta: Option<Map<String, Value>>, structured_content: Option<Map<String, Value>>, ) -> Self

pub fn type_(&self) -> &String

pub fn type_value() -> &'static str

returns “tool_result”

pub fn type_name() -> &'static str

👎Deprecated since 0.8.0: Use type_value() instead.

Trait Implementations

impl Clone for ToolResultContent

fn clone(&self) -> ToolResultContent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolResultContent

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ToolResultContent

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<ToolResultContent> for CreateMessageContent

fn from(value: ToolResultContent) -> Self

Converts to this type from the input type.

impl From<ToolResultContent> for SamplingMessageContent

fn from(value: ToolResultContent) -> Self

Converts to this type from the input type.

impl From<ToolResultContent> for SamplingMessageContentBlock

fn from(value: ToolResultContent) -> Self

Converts to this type from the input type.

impl Serialize for ToolResultContent

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

where __S: Serializer,

Serialize this value into the given Serde serializer.