Connecting AI Coding Agents to Google Search: Claude Code, Codex, and DeepSeek Harness
When you ask an AI inside Claude Code to “search the web,” it accesses the internet, but rarely retrieves actual Google search results. Codex, DeepSeek Harness, and Kimi Code operate similarly, each querying proprietary or partner search backends.
As of October 31, 2026, across the six common AI coding tools, only Gemini CLI uses Google search data out of the box. To retrieve real Google results in other tools, you must connect a Model Context Protocol (MCP) server or a dedicated plugin. The most direct setup is connecting SerpApi’s official remote MCP server, which requires a single terminal command in Claude Code and Codex.