@andamio/login

Social login for Cardano apps. Your users sign in with Google / X / Discord and get a non-custodial wallet (powered by utxos.dev) — in one call. No projectId, no chain provider, no seed phrases.

This is the login / wallet piece. To call Andamio's API (build & submit transactions), your backend uses your Andamio API key server-side — that's a separate concern from login.

Install

npm install @andamio/login

Use

import { createAndamioLogin } from "@andamio/login";

// You pick the network; Andamio maps it to its umbrella project internally.
const wallet = await createAndamioLogin("preprod"); // or "mainnet"

const address   = await wallet.getBech32Address();
const signature = await wallet.signData(address, nonce);   // sign a login-challenge nonce
const signedTx  = await wallet.signTx(unsignedTxCborHex);  // sign an Andamio-built tx

That's the whole login. Signing happens in an isolated browser iframe — neither your app nor Andamio can access the user's key.

API

createAndamioLogin(network): Promise<AndamioWallet>

• network: "preprod" | "mainnet".

AndamioWallet

• getBech32Address(): Promise<string>
• signData(address, payload): Promise<{ key, signature }>
• signTx(unsignedTx, partialSign?): Promise<string>

Notes

• Sponsored / gateway transactions are built and submitted by your backend against the Andamio gateway with your API key; this package only signs.