Hello, developers! Xcode 26.3 unlocks the power of agentic coding! Get ready to explore new features that released last Tuesday. If you haven't already, you can download Xcode 26.3 from the Apple Developer Downloads page Check out the official documentation for getting started and how to configure agents in Xcode: ‎ Writing code with intelligence in Xcode Generate code, fix bugs fast, and learn as you go with intelligence built directly into Xcode https://developer.apple.com/documentation/xcode/writing-code-with-intelligence-in-xcode/ ‎ Setting up coding intelligence Enable third-party coding tools that you want to use in the coding assistant https://developer.apple.com/documentation/xcode/setting-up-coding-intelligence ‎ Giving external agentic coding tools access to Xcode Let agentic coding tools access your project and Xcode capabilities using the Model Context Protocol https://developer.apple.com/documentation/xcode/giving-agentic-coding-tools-access-to-xcode ‎ Code-along: Experiment with coding intelligence in Xcode 26 Presented live at a Meet with Apple event: Learn how coding intelligence features can help you write code and fix errors with example prompts and resources. ‎ ‎We are also introducing a new tag to the forums Coding intelligence ✨. Use this tag when discussing these new features to increase visibility on the forums to help others chime in.

I've been investigating a persistent 401 Invalid Bearer Token error with Claude Agent in Xcode 26.3 on an Intel Core i9 Mac and wanted to share my findings here in case others are affected. ENVIRONMENT Hardware: Intel Core i9 (x86_64) Xcode: 26.3 (17C529) macOS: 26.3 (25D125) THE ISSUE Claude Agent fails with "Failed to authenticate. API Error: 401 - Invalid bearer token" on every prompt, despite the account showing as Signed In under Settings → Intelligence. The error persists after signing out and back in, and the token is confirmed valid and unexpired in Keychain. WHAT WORKS Claude Code in Terminal works perfectly on the same machine with the same credentials The basic Claude Sonnet 4.5 coding assistant in Xcode works fine Only Claude Agent is affected ROOT CAUSE HYPOTHESIS Xcode appears to be installing an ARM64 Claude binary on Intel Macs silently, with no warning or fallback. This binary likely fails to execute on x86_64 hardware and that failure is being misreported upstream as a 401 authentication error — which is why the error has nothing to do with the actual credentials. APPLE'S RESPONSE Feedback report FB22141224 was closed as 'Works as currently designed' with the explanation that Claude Agent requires the Neural Engine found on Apple Silicon. However, Claude Agent calls Anthropic's remote API over the network and performs no on-device AI processing — the Neural Engine is not involved. The fact that Claude Code works fine on this same Intel Mac with the same credentials demonstrates this clearly. WORKAROUND Using an Anthropic API key instead of OAuth resolves the issue but requires additional paid billing outside of an existing Claude.ai subscription. Has anyone else experienced this on either Intel or Apple Silicon? I'd be particularly interested to hear if Apple Silicon users are also affected, as the Developer Forums suggest this may not be limited to Intel Macs (thread/816369). Any input from Apple DTS engineers would be greatly appreciated.

Just installed the new Xcode 26.4 RC build (17E192) after happily using 26.3 for a few months. I'm noticing some immediate regressions in the Intelligence features: Frequent losing of OAuth token (Claude Agent). This had previously been fixed and now is back. Agent "Thinking" is constrained to thought bubble windows, which are (a) too small to read, (b) not scrollable when thinking goes beyond a few paragraphs. Yes they are tappable when thinking is finished, but this doesn't help. Due to (2), in deep thinking, it's impossible to follow progress beyond the visible window, so impossible to know if the agent is going off the rails. I'm noticing just more general slowness to complete tasks. Not just complete them -- it seems like it takes longer to START tasks, which is really weird. It sits there thinking for longer. Same project, same model as before. Every time you tap "New Chat" it presents both Claude and Codex choices, even if you're only signed into one. This turned a simple single tap into now a required two taps. Overall this feels like a frustrating setback after a very positive user experience in 26.3.

Since 26.4 beta 3 I've been having errors after a few hours of using Claude Agent. I get an error stating that I am not authed. If I go into Xcode settings, it still shows I am signed into Claude Agent. I have click sign out and then go through the whole auth process again to start using the agent again. This is on two separate computers. Is there anything I can do to stop this behaviour and stay logged in for longer? It worked fine in 26.3.

Trying to use the new built-in coding agents in Xcode (Claude / Codex), but running into a limitation with enterprise model setups. Our org accesses models through Microsoft Foundry (Azure-hosted endpoints), and we can connect to those models in Xcode using a custom endpoint / URL. That part works. However, that setup doesn’t seem to work with the built-in coding agents themselves. Those still appear to require direct account login or native API keys, with no way (that I can find) to point them at a custom endpoint or provider-backed deployment. Anyone figured out a way to get the agent experience working with enterprise setups like Foundry (or proxy layers)? Or is that not supported yet?

According tho Claude, The crash is clearly a bug in Xcode's built-in AI chat feature (IDEIntelligenceChat), not an authentication issue or anything on your end. What the crash log shows: The crash is happening in IDEIntelligenceChat — specifically in ChatInputEditorView.updateView and SourceEditorDataSource.ideChat_gracefullyApplyChangesToReflect. It's a SIGTRAP (assertion/precondition failure) triggered while SwiftUI is trying to lay out the AI chat panel. This is an Apple bug in Xcode 26.2 itself.

Hi everyone, I'm working in a strictly offline (intranet) environment and cannot use the standard online installation process to download and install the Claude Agent for Xcode. What I've tried: I manually copied the Agent binary/folder from an online machine to the following path: ~/Library/Developer/Xcode/CodingAssistant/Agents/Versions/26.3/claude The Issue: Even though the files are in the correct directory, Xcode fails to recognize the agent. It doesn't appear in the settings, and the Coding Assistant remains unavailable. Questions: Is there a specific metadata file (e.g., a .plist or .json index) that needs to be updated for Xcode to "see" the manually added agent? Are there any code signing or quarantine issues (like xattr) that need to be addressed when moving the agent between machines? Does anyone know if there are other dependencies or cache folders (besides ~/Library/Developer/Xcode/CodingAssistant/) that need to be synchronized? Environment: macOS: 26.3 (25D122) Xcode: 26.3 (17C519) Any guidance on the manual registration process for these agents would be greatly appreciated. Thanks!

Setup: Xcode 26.3. MacOS Tahoe 26.3.1 Signed in for Coding Intelligence with Claude Pro plan. For the first 3 prompts Claude responded normally. Afterwards it always responds with "Your request couldn't be completed."

When working in parallel on 2 projects (i.e. a server and a client app project). The Claude Code agents in those projects should be able to communicate with each other to improve the flow of information (i.e. changes in models, DTOs). The developer should supervise the communication and can block, if necessary.

In the Coding Intelligence feature introduced in Xcode 26, when I send a message using ChatGPT in Xcode, the message “Your request couldn't be completed. Networking error.” appears and I’m unable to use the feature. I suspect the issue may be related to the VPN or network proxy connected to my Mac and am attempting to investigate. However, Xcode does not display any specific error details, nor does it provide a way to view them, which makes a detailed investigation difficult. Next to the error message, there is a feedback button rather than a stethoscope (🩺) button, and the feedback window does not provide access to the underlying error information. Is there a way to view the detailed network error logs generated by ChatGPT in Xcode? (I am using Xcode 26.0.1.)

I work on some proprietary codebases and can only use private AI services with them (currently MiniMax M2.1 and GLM 4.7). It all works great with both Claude Code and OpenCode agents, and I'd like to leverage the new agentic capabilities that are now in Xcode 26.3. I'm not seeing any option to connect to OpenCode, and both the Anthropic and OpenAI providers require an enterprise account (which I don't have access to). Are there any options that I'm missing here?

Dear Xcode Team, Please consider adding an option to position the Coding Assistant on the right side of the editor. Currently, when the assistant panel is open, it makes it difficult to access the Project Navigator at the same time. Having the ability to move the Coding Assistant to the right side would allow developers to keep the Project Navigator visible while interacting with the assistant, improving workflow and efficiency. Thank you

Environment: Xcode 26.3 RC macOS 26.3 (25D125) (Apple Silicon / arm64) Setup: Xcode > Settings > Intelligence > Claude Agent: Signed In (account status shows "Signed In") Model: Default Steps to reproduce: Open a new chat in Xcode's Coding Assistant Select "Claude Agent" from the agent dropdown (instead of "Claude Sonnet 4.5") Send any message (e.g. "HI") Expected result: Claude Agent responds normally. Actual result: The message is sent but immediately returns the error: "Your request couldn't be completed." 🚩I have an active Claude Code subscription with remaining usage. Running claude in Terminal works perfectly, confirming the subscription and quota are valid.

Currently it's Sonnet 4.5. I know that 4.6 is out.

It doesn't show any files, only warning or errors for me. Same behavior with @

Steps to reproduce: Open Xcode 26.3 → Settings → Intelligence → Claude sign-in Click the sign-in button — spinner begins, never completes An email the arrives with a magic link. The magic link opened a browser page which displayed a 6-digit verification code with instructions reading "enter this verification code where you first tried to sign in" — i.e. back in Xcode. However, Xcode was showing only an endless spinner with no code entry field anywhere in the UI. This is the core bug. I did since manage to complete authentication sign-in through a second browser verification field that eventually appeared after about 10 minutes and did get signed in, but the Claude Intelligence agent still returns "Your request could not be completed" even after successful sign-in and a full Xcode restart. Prior to this bug starting at 10 am on February 19 I had been using the intelligence agent successfully for about a week. Anthropic did have some sort of event on their system around February 18/19 so maybe this has been a result of that. I have notified Anthropic support and Apple Feedback Assistant. Does anybody have a workaround until either anthropic or Apple get back to me?

I decided to try out XCode 26.2s new AI abilities but I only get a "Your request couldn't be completed". When clicking the details button I get see this error: InferenceError::unspecifiedUnderlyingError::Error(message: "Unknown parameter: 'tool_call_outputs'.", type: "invalid_request_error", code: Optional("unknown_parameter"), privacyPassRedemptionResponse: nil, userFacingLocalizedErrorMessage: nil) How do I fix that?

I am using official MCP SDK. According to official guide, Servers MUST provide structured results that conform to this schema. https://modelcontextprotocol.io/specification/draft/server/tools#output-schema I could see output schema defined, but result have no structured content. Current output schema: { name: "XcodeListWindows", title: "List Windows", description: "Lists the current Xcode windows and their workspace information", inputSchema: { type: "object", properties: { }, required: [ ], }, outputSchema: { type: "object", properties: { message: { description: "Description of all open Xcode windows", type: "string", }, }, required: [ "message", ], }, } Current response: { "result": { "content": [ { type: "text", text: "{\"message\":\"* tabIdentifier: windowtab1, workspacePath: \\xxx\\n* tabIdentifier: windowtab2, workspacePath: \\xxx\\n\"}", }, ] } } Expected: { "result": { "content": [ { type: "text", text: "{\"message\":\"* tabIdentifier: windowtab1, workspacePath: \\xxx\\n* tabIdentifier: windowtab2, workspacePath: \\xxx\\n\"}", }, ], "structuredContent": { "message": "* tabIdentifier: windowtab1, workspacePath: \\xxx\\n* tabIdentifier: windowtab2, workspacePath: \\xxx\\n", } } }

I am looking to optimize my AI-assisted workflow within Xcode. Previously, my process was inefficient: Manually selecting and copying code snippets from Xcode into Gemini. Asking a specific question (e.g., "Modify this to show an alertError message box"). Copying the result back into Xcode. I attempted to switch to the new native Intelligence feature in Xcode to streamline this, but I found significant shortcomings: Latency: The response time is noticeably slow. Much slower than asking directly on Gemini 3 Pro. Lack of Context: The AI often fails to grasp the full project context. For example, it frequently claims it cannot see the code for ScannerView even though it is part of the project. I often have to prompt it multiple times before it finally "finds" the file. Is Xcode's Intelligence feature actually production-ready yet? If not, what tools do you recommend that integrate well with iOS development? To be clear, I am not looking for "vibe coding." I have a clear grasp of the problem and the high-level solution. My goal is to delegate the low-level implementation to the AI. I need a tool that has full project context from the start, eliminating the need to manually copy-paste snippets into a chat window.

Hi, I'm a novice on Xcode and I have just created an API Key in order to use Perplexity as a model Provider in Xcode 26.4 (beta). The key is valid and, Perplexity support replies this: _The issue is that Xcode expects specific endpoint structures that don't fully match Perplexity's API. Xcode requires a /v1/models endpoint to list available models, which Perplexity doesn't currently provide in that format. Our API uses /chat/completions rather than /v1/chat/completions as well._ Is there a workaround to integrate it and get the benefits of new Intelligence features with Perplexity? Error code is "Provider is not valid - Models could not be fetched with the provided account details" Thanks for your help