Enum Tool 

pub enum Tool {
    Function {
        function_declarations: Vec<FunctionDeclaration>,
    },
    GoogleSearch {
        google_search: GoogleSearchConfig,
    },
    GoogleMaps {
        google_maps: Value,
    },
    CodeExecution {
        code_execution: Value,
    },
    URLContext {
        url_context: URLContextConfig,
    },
    FileSearch {
        file_search: Value,
    },
    ComputerUse {
        computer_use: Value,
    },
    McpServer {
        mcp_server: Value,
    },
}

Tool that can be used by the model

Variants

Function

Function-based tool

Fields

function_declarations: Vec<FunctionDeclaration>

The function declaration for the tool

GoogleSearch

Google Search tool

Fields

google_search: GoogleSearchConfig

The Google Search configuration

GoogleMaps

Google Maps tool

Fields

google_maps: Value

The Google Maps configuration

CodeExecution

Code execution tool

Fields

code_execution: Value

The code execution configuration

URLContext

Fields

url_context: URLContextConfig

FileSearch

File search tool

Fields

file_search: Value

The file search configuration

ComputerUse

Computer use tool

Fields

computer_use: Value

The computer use configuration

McpServer

MCP server tool

Fields

mcp_server: Value

The MCP server configuration

Implementations

impl Tool

pub fn new(function_declaration: FunctionDeclaration) -> Self

Create a new tool with a single function declaration

pub fn with_functions(function_declarations: Vec<FunctionDeclaration>) -> Self

Create a new tool with multiple function declarations

pub fn google_search() -> Self

Create a new Google Search tool

pub fn url_context() -> Self

Create a new URL Context tool

pub fn google_maps(config: Value) -> Self

Create a new Google Maps tool

pub fn code_execution() -> Self

Create a new code execution tool

pub fn file_search(config: Value) -> Self

Create a new file search tool

pub fn computer_use(config: Value) -> Self

Create a new computer use tool

pub fn mcp_server(config: Value) -> Self

Create a new MCP server tool

pub fn is_server_side(&self) -> bool

Returns true if this tool is a server-side built-in tool (e.g., Google Search, URL Context, Google Maps, Code Execution) that Gemini 3 executes internally.

When server-side tools are present, includeServerSideToolInvocations should be set in the ToolConfig so Gemini 3 returns toolCall/toolResponse parts instead of silently truncating the response.

Trait Implementations

impl Clone for Tool

fn clone(&self) -> Tool

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Tool

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Tool

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Tool

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Tool

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Tool