Try the API Instantly
No account required. Pay per request with USDC via x402 protocol, or sign up for a free plan with 1,000 monthly credits.
Instant Access
No signup required
Pay Per Request
From $0.01 per call
Secure Payments
USDC on Base, Stripe and SKALE
Select Endpoint
Enter Address
GET https://api.credprotocol.com/api/v2/score/address/vitalik.eth
Response
Click "Send Request" to see the response
Frequently Asked Questions
What is x402 and how does it work?
x402 is an open payment protocol that enables instant micropayments for API access using USDC stablecoins. Instead of creating an account and managing API keys, you simply connect your wallet and pay per request. Payments are authorized via a signature and settled on-chain.
Which networks and payment options are supported?
We support USDC payments on Base (mainnet), Base Sepolia (testnet), SKALE Base (mainnet), and SKALE Base Sepolia (testnet). Base is a fast, low-cost Ethereum L2 built by Coinbase. SKALE offers zero-gas transactions with sub-second finality. We also offer a Stripe payment option that facilitates settlement on Base mainnet via x402. Your wallet will automatically detect the correct network when you connect.
How do I pay for an API request?
Connect your wallet (MetaMask, Coinbase Wallet, WalletConnect, or others), enter the address you want to query, and click "Send Request". You'll see the payment amount required and can select your preferred network. Click "Pay with Connected Wallet" to sign the transaction, and your API response is returned instantly once payment is confirmed.
What wallets can I use?
Any wallet that supports EIP-3009 (USDC permit signatures) works with x402. We support MetaMask, Coinbase Wallet, WalletConnect, and other popular wallets. You'll need USDC on Base or SKALE to make payments.
Ready for More?
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