Developer FAQ
What is the difference between Node 1 and 2.
Node 2 is ideal for early-stage projects, while larger projects typically prefer Node 1 as it can scale to a higher TPS. Uploads of less than 100 KiB are currently free on Node 2.
Nodes maintain separate balances; fund the node you intend to upload to.
Does Irys offer free uploads?
Yes. Uploads below 100KiB are free on Node 2 only. This is a public good for users to be encouraged to try Irys.
What is the difference between Irys and WebIrys classes?
The Irys class is used for server-side apps and WebIrys is used when building with Irys in the browser.
How do I use WebIrys in a create-react-app project?
Follow this tutorial.
Can I host a website using Irys?
Yes. You can host static websites. We have a tutorial on how to do it here.
Is it possible to assign an API key to a funded Irys account so that I can pay for my client's uploads?
No, but we do support gassless uploads.
Which Ethereum Testnet is supported on Devnet?
Are Irys nodes rate-limited?
There is no limitation on the number of requests from one IP to a node.
Is it possible to know an upload’s id before uploading?
Yes. You can create/sign/upload transactions in multiple steps.
What is the format of the transaction id?
It is 32 bytes base64url encoded.
Is there an expected max/min length of a transaction id?
43 bytes.
Is there a max size limit for an upload?
No
How soon after I upload data is it available for download?
Our optimistic cache makes it available instantly.
Where can I see my data before it gets seeded onto Arweave?
As soon as your upload is complete, the data can be requested from a gateway.