Enum ToolDefinition 

pub enum ToolDefinition {
    Custom(CustomTool),
    Server(Value),
}

Tool definition – either a custom client tool or a built-in server tool.

Use this type in MessagesRequest::tools.

Variants

• ToolDefinition::Custom - A client-side tool with name, description, and JSON schema
• ToolDefinition::Server - Any server-managed tool (web search, code execution, etc.)

Example

use claude_sdk::{CustomTool, ToolDefinition};
use serde_json::json;

// Custom tool
let custom = ToolDefinition::Custom(
    CustomTool::new("my_tool", "A custom tool", json!({"type": "object"}))
);

// Server tool (raw JSON)
let server = ToolDefinition::Server(json!({
    "type": "web_search_20250305",
    "name": "web_search",
    "max_uses": 5
}));

Variants

Custom(CustomTool)

Custom client-side tool with name, description, and JSON schema

Server(Value)

Any server tool – uses raw JSON since server tool types vary

Trait Implementations

impl Clone for ToolDefinition

fn clone(&self) -> ToolDefinition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolDefinition

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ToolDefinition

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<BashTool> for ToolDefinition

fn from(tool: BashTool) -> ToolDefinition

Converts to this type from the input type.

impl From<CodeExecutionTool> for ToolDefinition

fn from(tool: CodeExecutionTool) -> ToolDefinition

Converts to this type from the input type.

impl From<CustomTool> for ToolDefinition

fn from(tool: CustomTool) -> Self

Converts to this type from the input type.

impl From<MemoryTool> for ToolDefinition

fn from(tool: MemoryTool) -> ToolDefinition

Converts to this type from the input type.

impl From<TextEditorTool> for ToolDefinition

fn from(tool: TextEditorTool) -> ToolDefinition

Converts to this type from the input type.

impl From<ToolSearchBm25> for ToolDefinition

fn from(tool: ToolSearchBm25) -> ToolDefinition

Converts to this type from the input type.

impl From<ToolSearchRegex> for ToolDefinition

fn from(tool: ToolSearchRegex) -> ToolDefinition

Converts to this type from the input type.

impl From<WebFetchTool> for ToolDefinition

fn from(tool: WebFetchTool) -> ToolDefinition

Converts to this type from the input type.

impl From<WebSearchTool> for ToolDefinition

fn from(tool: WebSearchTool) -> ToolDefinition

Converts to this type from the input type.

impl Serialize for ToolDefinition

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

where __S: Serializer,

Serialize this value into the given Serde serializer.