Struct ToolResultBlock 

pub struct ToolResultBlock {
    pub tool_use_id: String,
    pub content: Value,
}

Tool execution result sent back to the model.

After executing a tool requested via ToolUseBlock, the application creates a ToolResultBlock containing the tool’s output and sends it back to the model. The model then uses this information in its next response.

Fields

• tool_use_id: Must match the id from the corresponding ToolUseBlock
• content: JSON result from the tool execution

Example

use open_agent::{ToolResultBlock, ContentBlock};
use serde_json::json;

let result = ToolResultBlock::new(
    "call_123",
    json!({"result": 4})
);
assert_eq!(result.tool_use_id, "call_123");

Fields

tool_use_id: String

ID of the tool use request this result corresponds to.

Must match the id field from the ToolUseBlock that requested this tool execution. This correlation is essential for the model to understand which tool call produced which result.

content: Value

JSON result from executing the tool.

Contains the tool’s output data. Can be any valid JSON structure - the model will interpret it based on the tool’s description and output schema.

Implementations

impl ToolResultBlock

pub fn new(tool_use_id: impl Into<String>, content: Value) -> Self

Creates a new tool result block.

Parameters

• tool_use_id: ID from the corresponding ToolUseBlock
• content: JSON result from tool execution

Example

use open_agent::ToolResultBlock;
use serde_json::json;

let result = ToolResultBlock::new(
    "call_xyz",
    json!({
        "status": "success",
        "data": {"temperature": 72}
    })
);

Trait Implementations

impl Clone for ToolResultBlock

fn clone(&self) -> ToolResultBlock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolResultBlock

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ToolResultBlock

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ToolResultBlock

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

where __S: Serializer,

Serialize this value into the given Serde serializer.