How to Use AI Agents in IntelliJ IDEA with ACP

JetBrains' IntelliJ IDEA integrates AI agents seamlessly through the Agent Client Protocol (ACP), a standardized framework that defines the interaction between the IDE and various AI tools. Built-in agents like Codex, Claude Agent, and Junie are ready to use, while the ACP Registry offers additional options. ACP ensures smooth integration by standardizing communication, allowing developers to swap agents without altering IDE workflows. Agents operate independently, maintaining their own models, tools, and authentication methods. Developers can initiate tasks, review edits, and iterate within the IDE, streamlining the development process. To install new agents, access the ACP Registry through IntelliJ IDEA's settings, configure MCP servers, and authenticate as needed. This approach enhances productivity by keeping AI-driven coding tools integrated directly into the IDE.