Building Apple mobile and desktop apps with Codex / Claude Code? Here's my toolchain to build amazing apps. Computer use and the latest @OpenAI models are a huge unlock here for autonomous coding and design. What makes this hard: 1. Apple's WWDC sessions are not crawable but they contain a tremendous amount of knowledge about their new features but this is not available to your model. 2. Models tend to produce mediocre interfaces and animations in these interfaces are even worse 3. Models struggle to see the apps visually so usually what I've built doesn't really look good and the model doesn't know requiring many turns of conversation. Toolchain 1. Setup the @emilkowalski skills for animations esp the new "apple-design" skill which handles principles for interface design and fluid motion npx skills@latest add emilkowalski/skills 2. Install the Sosumi MCP (sosumi.ai/). Apple Developer docs are locked behind JavaScript, making them invisible to most LLMs. 3. Use github.com/upstash/context7 for queries and bake this into AGENTS.md/CLAUDE.md as an instruction to use this MCP to check the best patterns for specific APIs 4. Enable "Computer use" on Codex, install the app, Ask one session to test it end to end so that you can enable all the MacOS permissions. This gives 5.6 models the ability to drive your apps for you 5. Clone in github.com/guitaripod/wwdc-s… and update instructions to reference this repo from a central place to read catalog.json + topics.json (ripgrep). Progressive disclosure means you're saving tokens here 6. For mobile apps specifically I can also strongly suggest the Build iOS apps plugin from @OpenAI github.com/openai/plugins/tr… (Codex specific) 7. (Optional) Consider subscribing to patreon.com/kavsoft. They are a creator that make amazing Swift animations + tools. Download all of them and put them into /templates and update instructions that if the model is building a new component to evaluate templates. Good idea to ask it to create an index here first. 8. (Optional) For Design claude.ai/design from @AnthropicAI is an excellent resource to prototype and then use this as a grounding for the App design. 9. The wwdc sessions contains talks from 2014 - 2026 so you might want to add guardrails into your Agents files to indicate which talks you want to exclude. Another good tip here is find OSS repos that contain patterns that you really love or flows you love and then clone them in locally and ask your agent to use Deepwiki MCP against them to interrogate patterns when planning a new feature. How to use this If there's enough interest i'll create a repo that bundles all of this into a single install with FAISS embeddings for the talks. Paste in Items 1-6 into your favorite coding agent and it should be able to setup everything