Reposted by Malte Ubl
We just released 𝚛𝚎𝚊𝚌𝚝-𝚋𝚎𝚜𝚝-𝚙𝚛𝚊𝚌𝚝𝚒𝚌𝚎𝚜, a repo for coding agents.
React performance rules and evals to catch regressions, like accidental waterfalls and growing client bundles.
How we collected them and how to install the skill ↓
vercel.com/blog/introd...
vercel.com
Introducing: React Best Practices - Vercel
We've encapsulated 10+ years of React and Next.js optimization knowledge into react-best-practices, a structured repository optimized for AI agents and LLMs.
![Code snippet: // app/api/[transport]/route.ts
import { createMcpHandler } from '@vercel/mcp-adapter';
const handler = createMcpHandler(server => {
server.tool(
'roll_dice',
'Rolls an N-sided die',
{ sides: z.number().int().min(2) },
async ({ sides }) => {
const value = 1 + Math.floor(Math.random() * sides);
return { content: [{ type: 'text', text: `🎲 You rolled a ${value}!` }] };
}
);
});
export { handler as GET, handler as POST, handler as DELETE };](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:m2jwplpernhxkzbo4ev5ljwj/bafkreicgk7cyi6xecgfzaiaoqppevkcr4rkanrlxfoexavx3kfhnf7g6gy)
 for decisions. 1-way doors are rare. Never act like something is a 2-way-door if it is a 1-way-door
- Don’t ask for permission, ask for forgiveness but be smart about it
- [Understand what experiments are for](https://www.notion.so/When-to-experiment-8fd91090ef7a418a9532b9681524fe0b?pvs=21)
- Actually QA your shit. Abusing users for QA is inefficient and disrespectful. Users are a source of feedback about the product
- Send your stuff to trusted testers and ask for feedback
- Don’t let indecision go into your head
- If in doubt ship the version that is closer to ship and iterate
- The outcome-differential between two options in a decision is usually lower than the opportunity cost of not shipping either of them
- **You don’t need approval from anyone at Vercel to ship.** People can tell you not to ship, but you don’t have to ask them for permission, they have to reach out to you proactively if they feel strongly enough
- You reach out to legal, finance, security, privacy for their expertise not their permission
- Be transparent about what you are shipping in channels such as product-area-updates, but it is not your responsibility to ensure everybody is consuming your updates](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:efr3ow2v22u45efltglpm3rs/bafkreih4cmsvnsrp6ey2wbrvpg5o7jp7mdbxjjt5mj2waez7duh3lfl4sy)
