You can expect the interview question that asks about these ERC-721 extensions, here’s what you should highlight:
Explain it in real-world terms:
Say: “Including the Metadata extension is essential because it stores the name, image, and details for every NFT. Without it, platforms like OpenSea can’t show what your NFT actually is—so your tokens might just look like blank boxes to users. No one wants invisible NFTs!”
Try to give a strong analogy:
“It’s kind of like sending someone a baseball card in a plain envelope with no picture or stats. The collectors can’t appreciate the card if they can’t see anything about it!”
Highlight why Enumerable matters:
“Enumerable is what allows anyone (including marketplaces and wallet apps) to pull a list of all NFTs someone owns, or all NFTs in a collection. Without it, there’s no easy ‘Browse all’ or ‘My NFTs’ functionality. It makes life harder for users and hurts your NFT’s visibility.”
What the interviewer is really looking for:
Mention: “If your NFT is missing either Metadata or Enumerable, getting listed and displayed properly on mainstream marketplaces becomes a serious challenge. Users may not see images or even find all their tokens. It’s a dealbreaker for collectors and projects aiming for broad adoption.”
Pro tip to stand out:
Add: “I’d always include both from the start—even if it takes a little extra effort—because it sets the project up for success later. Cutting corners here will create headaches and likely force you to patch things later, which is way more work than just doing it right upfront.”
Bonus—show you care about user experience:
“I’m always thinking about the end user’s journey. These extensions might seem ‘optional’ but they’re really not if you want your NFTs to be accessible, discoverable, and collectible on the platforms that matter.”
Direct, confident, and focused on practical impact—answering this way shows you know the tech and care about real-world results.
