"The Xcode 26.3 Release Candidate is available to all Apple Developers today from the developer website and will hit the App Store a bit later. This latest update comes on the heels of the Xcode 26 release last year, which first introduced support for ChatGPT and Claude within Apple's integrated development environment (IDE) used by those building apps for iPhone, iPad, Mac, Apple Watch, and Apple's other hardware platforms."
"The integration of agentic coding tools allows AI models to tap into more of Xcode's features to perform their tasks and perform more complex automation. The models will also have access to Apple's current developer documentation to ensure they use the latest APIs and follow the best practices as they build. At launch, the agents can help developers explore their project, understand its structure and metadata, then build the project and run tests to see if there are any errors and fix them, if so."
Xcode 26.3 introduces agentic coding support that integrates Anthropic's Claude Agent and OpenAI's Codex directly into the IDE, with a Release Candidate available from the developer website and an upcoming App Store release. The integration exposes more Xcode features to models, enabling project discovery, file management, previews, snippets, builds, automated testing, and error fixes. Agents gain access to Apple's developer documentation to use current APIs and follow best practices. Xcode uses the Model Context Protocol (MCP) to connect MCP-compatible agents to its tools. Developers can download agents from Xcode settings and link provider accounts by signing in or adding API keys. Apple optimized token usage and tool calling to run agents efficiently.
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