# Anthropic introduces web search on the API

> Anthropic introduced web search as an API tool for supported Claude models. The company said the tool can retrieve and analyze web results and return citations, giving developers a way to build applications using more current public information than a model training cutoff provides on its own.

Canonical: https://hypler.com/ai-news/anthropic-web-search-api-2025
Hypler publication: 2026-10-06
Original source date: 2025-05-07
Publisher: Anthropic
Article kind: source-briefing
Category: Developer tools
Tags: web search, citations, agents

## Engineering relevance

Web retrieval changes the trust boundary. Hypler should evaluate source quality, prompt-injection handling, attribution, caching, and user disclosure for every browsing-enabled feature in production deployments.

## Original source

- [Anthropic](https://claude.com/blog/web-search-api)

## Image provenance

### Primary image

![Generated illustration of indexed source records connected to a reference document.](https://hypler.com/assets/news/retrieval-sources.webp)

generated illustration. Credit: Hypler / AI-generated editorial illustration. Hypler editorial asset; not vendor or event photography.
- [Image source](https://hypler.com/ai-news/media.md)

### Supporting image

![Generated illustration of indexed source records and a vector retrieval path.](https://hypler.com/assets/news/vector-index.webp)

generated illustration. Credit: Hypler / AI-generated editorial illustration. Hypler editorial asset; not vendor or event photography.
- [Image source](https://hypler.com/ai-news/media.md)

## Reading boundary

Historical source briefing, not current availability, compliance advice, partnership, or proof of Hypler deployment. Generated artwork is not event photography. Public reading grants no private access or execution authority.