Crypto Payments

We Playtest Games supports cryptocurrency payments for both purchasing credit and paying per-playtest.

Supported Tokens

Token	Chains
USDC	Base, Ethereum, Solana
ETH	Base, Ethereum
SOL	Solana

Method 1: x402 Protocol (API)

The x402 protocol lets you pay for playtests directly via HTTP headers. This is ideal for AI agents and automated workflows.

Pay Per Playtest

1. Request a playtest with X-Payment-Method: x402
2. Server returns 402 with payment instructions (amount, chain, receiver address)
3. Sign and submit the on-chain transaction
4. Retry the request with X-Payment header containing the signed payload
5. Server verifies the payment and activates the playtest

See x402 Payments for the full protocol details.

Top Up Credit

Use POST /api/v1/billing/credit/x402 with the same x402 flow to add credit to your account balance.

Method 2: Direct Transfer (Dashboard)

The web dashboard supports crypto payments without the x402 protocol:

1. Go to Dashboard > Billing > Add Credit
2. Select the Crypto tab
3. Choose your amount, token, and chain
4. Either:
   • Send to address — copy the wallet address and send manually
   • Connect wallet — one-click approve via MetaMask, Phantom, etc. (EVM & Solana only)
5. Once the transaction confirms on-chain, credit is added to your account

Confirmation Times

Chain	Time
Base	~2 seconds
Ethereum	~30 seconds
Solana	~15 seconds

Handling Failures

• Transaction failed: No charge. Retry with a new transaction.
• Timeout during verification: A background job checks every 5 minutes for unmatched payments and credits your account automatically.
• Overpayment: Excess amount is added as account credit.
• Underpayment: Rejected. You must retry with the correct amount.