Why it matters

Fresh info requires web search. Understanding shapes research-capable agents.

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The architecture

Search API: query in, results out.

Wrap as tool with query parameter.

Search integrationSearch APIGoogle/SerpAPI/BingTool wraps callwith queryReturn resultstitles + snippets + URLsReturn top N with URLs; agent decides which to fetch full content
Search tool structure.
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How it works end to end

Fetch full page: separate tool for URL fetching.

Rate limiting: search APIs have quotas.

Caching: repeat queries hit cache.

Filter: exclude spam/low-quality domains.