How to Fix OpenSea Failed to Fetch Issue

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Author: Mr. KingsHOK
An accountant who turned cryptopreneur to pursue my interest in crypto and decentralized finance. Let me show you how to invest safely in the space with my experience over the years.

OpenSea failed to fetch listing error can be very annoying!

Have you tried everything possible, and you’re still getting failed to fetch errors on the OpenSea NFT marketplace?

Well, you’re not alone as many curious artists are venting their frustrations over this problem on most forum threads.

Luckily we’ve figured out what the issue is, and how to solve this problem is a lot simpler than it seem.

In this guide, you’ll learn what is causing the OpenSea failed to fetch error, as well as 3 different methods to fix it.

Let’s get started!

How to fix the OpenSea failed to fetch error

First of all, it’s important to understand that most likely, the API error 400 on OpenSea was never a real error to start with.

Chances are that the API simply hadn’t updated yet, and therefore wasn’t able to fetch the latest data on your new NFT.

Nevertheless, it’s rather an annoying problem, hence why you should follow these methods below to get the issue solved.

In summary, there are only 3 methods to fixing the OpenSea failed to fetch listing error, and they are;

  1. Wait 15-30 minutes
  2. Reduce size of your uploaded file
  3. Use ‘Unlockable Content’ for high resolution arts.

Method 1: Wait 15-30 minutes

If you’re getting the OpenSea failed to fetch error, just give it about 15-30 minutes and then check back.

I’ve seen multiple reports of people that tried creating new item once, twice and even up to 46 times.

After about an hour or thereabout, they ended up with 46 different versions of the same item in their NFT collection.

Though you can delist on OpenSea by simply deleting them afterwards, but it can be very stressful.

In most cases, the items may show up in your wallet within few minutes, but when your file is big, you may have to wait an hour-plus.

Method 2: Reduce your NFT file size

If waiting isn’t something you would like to be doing just to mint your NFT, then it’s recommended that your file size should be reduced.

You may have never encountered OpenSea failed to fetch error before, but if you’re into video art, then try limiting your file sizes to 40mb maximum.

OpenSea may say that up-to 100mb file size is fine, it’s clearly a common issue in practice.

Those that are only uploading static images, prolly may not need to worry about this process that much.

Method 3: Use ‘Unlockable Content’ feature

This method isn’t necessarily the best solution if you want to create something that is decentralized and stored on IPFS fully.

It’s only a good solution for those who are willing to provide active support for their artwork in the long term.

When you create a Non-Fungible Token (NFT) on OpenSea, there’s a feature known as ‘Unlockable Content’.

Unlockable content is used to provide additional content such as; access keys, discount codes or links to files of the NFT item.

You can upload a lower resolution of your file to OpenSea for listing, then provide a link to high-resolution version via the Unlockable Content section.

The larger file would then have to be stored on separate cloud storage of your choice.

In conclusion

The API error 400 OpenSea failed to fetch error is fairly common among non-fungible token artists.

Nevertheless, it’s a problem that primarily affects video artists, who like to maximize the quality of their artwork.

Unfortunately, it seems like OpenSea backend systems aren’t actually able to handle large file sizes without impacting user experience.

Whether you insist on the highest quality, or willing to compromise file size, one of these methods above will surely be a solution.