AI Search: the search primitive for your agents

What this post added

Introduces AI Search, a new primitive for agents that unifies semantic and keyword search. Details hybrid search implementation using vector search and BM25, including tokenizer and fusion configurations. Demonstrates dynamic instance creation for per-agent or per-customer search contexts using `ai_search_namespaces` binding. Provides a detailed example of a customer support agent using AI Search with the Agents SDK, showcasing tool definitions for searching knowledge bases and saving resolutions.