> For the complete documentation index, see [llms.txt](/llms.txt).

# Ed25519 Private Key

The `getEd25519PrivateKey` method returns the user's Ed25519 private key. Use this key to sign transactions on Solana, Near, Algorand, and other chains that use the Ed25519 curve.

This method throws an error if no user session exists or if the key is unavailable.

## Usage[​](#usage "Direct link to Usage")

```
let ed25519PrivateKey = try web3Auth.getEd25519PrivateKey()

```