frontend-ux

Frontend UX

Working transaction code is not a finished product. Check these product-completeness surfaces before calling an onchain frontend finished.

Product identity. Replace every framework default: tab title, favicon, OG/Twitter title, description and image, and visible "built with" branding. Nothing in the build fails when Create Next App or Scaffold-ETH 2 App ships to production, so nothing reminds you.

Address inputs. A recipient field gated on isAddress() silently rejects vitalik.eth and leaves the button dead with no explanation. Resolve names onchain, show the resolved address before submit, submit that address, and give a reason whenever input is rejected. Use your UI kit's address component if it has one.

Fiat context. Every token or ETH amount you show — balances, inputs, confirmations, position summaries — carries a value from a real price source. Label a stale or unavailable price rather than silently dropping it.

Target chain. Point the app at the chain the brief names; scaffold defaults sit on local/hardhat. Use a dedicated RPC for production rather than the accidental public fallback, and don't slow the template's polling interval.

Also required, and usually already habit — confirm rather than rebuild:

• One pending state per button, held from click through the receipt and the authoritative state refetch (isPending clears when the wallet returns the hash, not at confirmation), released in finally so a rejection can't lock it.
• One primary action at a time: connect → switch network → approve → execute. Approval status comes from a fresh onchain read, never a local flag.
• Token math in the token's real decimals (parseUnits/formatUnits; USDC is 6). Never render base units.
• Reverts and wallet errors translated to human text, shown near the action that failed.
• Semantic theme tokens, not a hardcoded dark wrapper. If dark-only is deliberate, remove the theme toggle.

Finish by running the project's build or typecheck, and confirming the configured target chain matches the brief.

Before you finish: send a one-line note via feedback/SKILL.md — issue or praise.