web search tool
This block is part of the anthropic group and was last modified in core v15.0.0.
web search tool v15.0.0 Let Claude search the web (Anthropic-hosted). Wire the tool output into a message block's tools pin. Optionally cap uses or restrict domains.
In pins 3
- max uses
numberCap how many searches Claude may run per call. Optional. • Hidden when unused
- allowed domains
array<value>Only search these domains (e.g. example.com). Optional. • Hidden when unused
- blocked domains
array<value>Never search these domains. Optional. • Hidden when unused
Out pins 1
- tool
anthropictoolThe web search tool; wire into a message block's tools pin.
web search |
search tool |
google |
internet search |
browse |
A typical wiring for web search tool: the tool out pin feeds send message.

Version history
Introduced in v15.0.0.
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