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Utilities for pages, JSON, configuration and product checks. Explore the catalog, then choose prepaid service credits or a wallet-based test.
Card-funded credits
A $5 credit pack covers 10,000 calls priced at $0.0005 each. Actual usage depends on the tools you choose. Credits work only on this service.
Checking availability…
Save your API key and recovery key privately before leaving. We keep them only in this tab, not browser storage. Losing both means we cannot restore access automatically.
Opens in a new tab. Keep this workspace open to preserve your keys and edited input. After checkout, return here and check your balance. Your saved credentials are still needed if this tab closes.
Replace API key
Keep your credits and retry history. Save the replacement before activating it; activation immediately revokes the old key. You need your current key for this step.
Try a tool with credits
A retry uses the same request ID and input. Results can be recovered for ten minutes without another debit.
Recover an account
Use your saved recovery key if you lost your API key. Recovery preserves your balance and replaces both credentials. Save the replacements before activation; the previous credentials will stop working.
Optional: MetaMask test
For an existing Base Sepolia wallet. Connect through the MetaMask extension in your regular browser; this page never asks for a private key. Each signature or transaction requires your wallet approval.
Checking test availability…
Prepare test funds using the official Circle USDC faucet and a Base Sepolia ETH faucet. No mainnet funds are needed.
Approval authorizes the Gateway contract to spend up to 1 test USDC. Deposit moves that amount into your Gateway balance. Wait for each transaction to confirm in MetaMask before the next step.