# The EFS Devnet is Live

> Come kick the tires... but not too hard!

**Published by:** [Ethereum File System (EFS)](https://paragraph.com/@efs/)
**Published on:** 2026-04-19
**URL:** https://paragraph.com/@efs/efs-devnet-live

## Content

If Ethereum is becoming a world computer, it needs better ways to organize information. EFS is an attempt to make information on Ethereum more structured, navigable, and usable. Today is April 19, Bicycle Day, which feels like a fitting time to take a new decentralized architecture for a spin. The EFS Devnet alpha is now live. This is a public testing environment for the EFS protocol and client end-to-end. It is live enough to use, but early enough to break. For now, the devnet runs on a pinned Sepolia fork rather than public Sepolia, because the system is still changing quickly. Connect a wallet and it will be auto-funded on first contact, so you do not need to worry about gas costs or finding a faucet. In other words, this is a low-friction way to start exploring EFS before the shape of the system hardens.Try it herehttps://app.efs.eth.limo (https://app.efs.eth.link works too)What you can do todayThe interface is still basic, but right now you can already:upload files to the devnetbrowse parts of the EFS client and explorerinspect tagged and seeded content pathstest early social/file workflowsbreak things and tell me what feels wrongData onchain by defaultOne of the most distinctive features of this alpha is that files go onchain by default. This alpha is not just about interface testing - it is about exploring the limits of what native Ethereum storage can actually support. The intended launch architecture uses IPFS as the main file transport, alongside Arweave, but for now, you get an onchain-first experience.Important caveatsThis is a playground, not a permanent home for important data. If you do not mind sharp edges, I would love for you to try it. Please assume:devnet files will be deleted weeklythings may crashthings may change at any timeparts of the architecture are still evolvingsome explorer views and seeded content are still under active iterationWhy release nowI would rather get EFS into people's hands early than wait for a false sense of completeness. The architecture is solidifying, but it isn't fully there yet. Getting real usage and real feedback right now will shape the product, the architecture, and the user experience much more effectively than keeping it private for another few weeks.Feedback wantedThe best time to get feedback is before the shape of the system hardens. I would love for you to try the system with free devnet gas and report what feels broken or confusing. I am especially interested in:bugs and crashesconfusing UXwhat feels intuitivewhat doesn't make sense yetwhat you expected to be able to do nextBest places to send feedback:EFS Discord: https://discord.gg/Erp3ZYDQBhGitHub issues for technical bugs and problems: https://github.com/efs-project/contracts@JamesCarnley on X/Twitterreplies in the devnet launch threadA bigger story post unpacking the full vision is coming later, along with a presentation on May 8. But for now, this is the beginning, not the finished form.

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