Tool Search

Microsoft Foundry introduced Tool Search at Build 2026 to address the token cost and accuracy degradation caused by large tool catalogs in AI agents. The feature uses meta-tools to retrieve a small ra…

Anthropic released Tool Search alongside Claude Opus 4.5, allowing tools to be marked as `defer_loading: true` so their schemas are not loaded into the context window until needed. This lazy loading i…

Nous Research's open-source Hermes Agent now ships a Tool Search feature that addresses context window overload from MCP tools. Anthropic's internal evaluations show the feature improved Claude Opus 4…