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FeatureSocial Login & Embedded Wallet

Social Login. Embedded Wallet.

Customers sign in with Google, Email, SMS, or Apple. An embedded wallet ensures payment accuracy. Correct chain, correct token, fully recoverable.

//Problem · Solutionwhy this exists
× the problem

Traditional crypto payments show customers a wallet address and hope they send the right token on the right chain. Wrong-chain errors lose funds permanently. Merchants need multiple deposit addresses per chain. And if a customer loses their wallet, the funds are gone forever.

→ the solution

PYMSTR uses Web3Auth to offer 7 login options. Google, Email, SMS, Apple, MetaMask, WalletConnect, and Coinbase Wallet. Social login creates an embedded MPC wallet that serves three purposes: it eliminates wrong-chain/wrong-token errors through payload validation, it removes the need for merchants to manage multiple deposit addresses, and it ensures customer funds are always recoverable through social and guardian recovery.

//How it works3 steps

Three steps, on-chain.

Step 01

Customer signs in

Google, Email, SMS, Apple, or connect an existing wallet (MetaMask, WalletConnect, Coinbase Wallet).

Step 02

Embedded wallet created

An MPC wallet is created that validates payment parameters. Correct stablecoin, correct chain, correct amount. The customer's funds are always recoverable.

Step 03

Payment executes accurately

The wallet enforces the merchant's settings. Only approved stablecoins and chains are available. Wrong-chain errors are impossible.

//Benefits4 primitives

What you get.

01

7 Login Options

Google, Email, SMS, Apple for social login. MetaMask, WalletConnect, Coinbase Wallet for customers with existing wallets.

02

Payment Accuracy

The embedded wallet validates the payment payload. Correct stablecoin, correct chain, correct amount. No wrong-chain errors, no lost funds.

03

Full Recoverability

MPC (Multi-Party Computation) key management with social and guardian recovery. Customers never lose access to their funds.

04

No Multi-Address Management

Merchants don't need separate deposit addresses per chain. The embedded wallet routes payments to the right destination automatically.

//Social Login & Embedded Wallet questions4 answers

Short
answers.
No jargon.

Yes. Customers must hold USDC or USDT to pay. PYMSTR does not provide a fiat on-ramp. The embedded wallet manages payment routing and accuracy. Not stablecoin acquisition.
Three things: (1) payment accuracy. Validates the correct stablecoin, chain, and amount so wrong-chain errors are impossible, (2) simplified merchant operations, no need for multiple deposit addresses per chain, and (3) fund recoverability. Customers can always recover their wallet via social or guardian recovery.
They can connect MetaMask, WalletConnect, or Coinbase Wallet directly. PYMSTR supports both embedded wallets (via social login) and existing wallets.
Coinbase Commerce shut down in March 2026. Its replacement, Coinbase Payments, requires customers to connect an existing wallet. PYMSTR's social login creates an embedded wallet for customers who don't use MetaMask, but customers still need stablecoins to pay. The key advantage is payment accuracy and fund recoverability, not fiat on-ramping.

Add the stablecoin rail to your checkout.

Non-custodial. Stable-in, stable-out. Funds settle directly to your wallet on-chain.