Struct WebFetchTool 

pub struct WebFetchTool {
    pub tool_type: String,
    pub name: String,
    pub allowed_domains: Option<Vec<String>>,
    pub blocked_domains: Option<Vec<String>>,
    pub max_uses: Option<u32>,
    pub max_content_tokens: Option<u32>,
    pub cache_control: Option<CacheControl>,
}

Web fetch tool — lets Claude retrieve content from a specific URL.

Example

use claude_sdk::server_tools::WebFetchTool;

let tool = WebFetchTool::new();

Fields

tool_type: String

Always "web_fetch_20260309"

name: String

Tool name (always "web_fetch")

allowed_domains: Option<Vec<String>>

Restrict fetches to these domains only

blocked_domains: Option<Vec<String>>

Never fetch from these domains

max_uses: Option<u32>

Maximum number of fetch operations per request

max_content_tokens: Option<u32>

Maximum number of tokens to return from fetched content

cache_control: Option<CacheControl>

Cache control for this tool definition

Implementations

impl WebFetchTool

pub fn new() -> Self

Create a new WebFetchTool with the latest tool version.

Trait Implementations

impl Clone for WebFetchTool

fn clone(&self) -> WebFetchTool

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WebFetchTool

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

Formats the value using the given formatter.

impl Default for WebFetchTool

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for WebFetchTool

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<WebFetchTool> for ToolDefinition

fn from(tool: WebFetchTool) -> ToolDefinition

Converts to this type from the input type.

impl Serialize for WebFetchTool

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

where __S: Serializer,

Serialize this value into the given Serde serializer.