React Native: Your Agent, inside Your Mobile App

CopilotKit has introduced a React Native client that allows AG-UI agents already used on the web to run natively in iOS and Android apps, with on-device frontend tools and interfaces rendered through React Native components rather than webviews. The setup requires React Native 0.70 or later, Node.js 20 or later, a model provider key, required Hermes polyfills imported in a specific order, and a self-hosted Copilot runtime that keeps prompts and model credentials on the developer’s server. Developers can choose headless, standard, or prebuilt-component package entry points, with the headless option recommended for custom interfaces because it avoids unnecessary native dependencies. The platform supports generative UI through device-side tools such as useRenderTool, state-driven integrations through useFrontendTool, and hooks for approvals, interruptions, suggestions, threads, and agent context. The post also notes networking considerations for physical devices, identifies native voice support as currently bring-your-own, and highlights A2UI, Google’s declarative, streaming-oriented generative UI specification, as a future direction for cross-platform agent interfaces.

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