{"slug": "expo-s-exact-framework-lets-coding-agents-build-and-test-one-app-across-four", "title": "Expo's Exact framework lets coding agents build and test one app across four platforms", "summary": "Expo updated the README for its experimental Exact cross-platform runtime on November 9th to feature a demonstration store running on web, iOS and macOS, with the runtime supporting four platforms. Expo co-founder Charlie Cheever is named as the author in the commit for the README update. Exact is built for coding agents, with constrained languages, visual inspection and portable tests built into the runtime.", "body_md": "# Expo's Exact framework lets coding agents build and test one app across four platforms\n\n**On November 9th, Expo updated Exact's README to feature a demonstration store on web, iOS and macOS. The experimental runtime supports four platforms.**\n\n        By [RuntimeWire Staff](https://runtimewire.com/author/runtimewire-staff)\n        · Published \n\nPrimary source: [Hacker News](https://github.com/expo/exact)\n\n## Why it matters\n\nExact is Expo's test of a cross-platform framework designed for coding agents, with constrained languages, visual inspection and portable tests built into the runtime.\n\nExpo co-founder [Charlie Cheever](https://medium.com/harvard-in-tech/harvard-in-tech-spotlight-charlie-cheever-early-facebook-engineer-and-co-founder-of-quora-and-512a3d83548f?ref=runtimewire) is the author named in the patch for the [November 9th README update](https://github.com/expo/exact/commit/94b8671f70fe2e25b307a40e7fce66dc27c9f802?ref=runtimewire) to [Exact](https://github.com/expo/exact?ref=runtimewire), a cross-platform application runtime from Expo.…\n\nWhen you purchase through links in our articles, [we may earn a small commission](https://runtimewire.com/affiliate-monetization-standards). This doesn’t affect our editorial independence.", "url": "https://wpnews.pro/news/expo-s-exact-framework-lets-coding-agents-build-and-test-one-app-across-four", "canonical_source": "https://runtimewire.com/article/expo-exact-agent-native-cross-platform-framework", "published_at": "2026-11-10 00:05:43+00:00", "updated_at": "2026-11-10 03:20:41.025115+00:00", "lang": "en", "topics": ["ai-agents", "developer-tools", "ai-tools"], "entities": ["Expo", "Exact", "Charlie Cheever"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/expo-s-exact-framework-lets-coding-agents-build-and-test-one-app-across-four", "markdown": "https://wpnews.pro/news/expo-s-exact-framework-lets-coding-agents-build-and-test-one-app-across-four.md", "text": "https://wpnews.pro/news/expo-s-exact-framework-lets-coding-agents-build-and-test-one-app-across-four.txt", "jsonld": "https://wpnews.pro/news/expo-s-exact-framework-lets-coding-agents-build-and-test-one-app-across-four.jsonld"}}