Returns a TOOL object for Claude's builtin web_search tool. The default tool
version web_search_20260209 adds dynamic result filtering and requires
Claude Sonnet 4.6, Opus 4.6 or newer; pass .version = "web_search_20250305"
for older models.
claude_websearch(
.max_uses = NULL,
.allowed_domains = NULL,
.blocked_domains = NULL,
.version = "web_search_20260209"
)Integer; maximum number of searches the model may run per request.
Character vector of domains to restrict search results to.
Character vector of domains to exclude from search results.
Character; the Anthropic web search tool version (default: "web_search_20260209").