Provides React Native performance optimization guidelines for FPS, TTI, bundle size, memory leaks, re-renders, and animations. Applies to tasks involving Hermes optimization, JS thread blocking, bridge overhead, FlashList, native modules, or debugging jank and frame drops.
75
93%
Does it follow best practices?
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Low
Low-risk findings worth noting
The canonical home for this skill is react-native-best-practices in callstackincubator/agent-skills
Low
Low-risk findings.
2 low severity findings. Worth noting, but not necessarily harmful.
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
The skill's "Remote Code Loading" workflow explicitly instructs adding a runtime resolver (ScriptManager.shared.addResolver) that points to external CDN URLs (e.g., `https://my-cdn.com/assets/${scriptId}`) so the app will fetch and execute remote chunks, which is a clear ingestion of untrusted third‑party content that can materially change behavior.
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
I flagged https://get.flashlight.dev because the skill explicitly instructs running curl https://get.flashlight.dev | bash to install Flashlight, which fetches and executes remote code at runtime and is presented as a required tool for the measurement workflow.
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