x402 Toolbox is a set of 28 small endpoints, each showing a different x402 payment pattern. You request an endpoint, receive a 402 Payment Required response with payment details, then sign and resend the request with an x402-aware client. Payment is in USDC on Base mainnet, and the site states that no accounts or API keys are needed.
Prices are listed per endpoint and range from $0.001 (invoice creation) to $0.05 for multi-source verification, with some tiered endpoints going up to several dollars. Several endpoints are free, including the ownership challenge, the auction bid, and prediction market creation. Full pricing is in the site's /openapi.json file.
For Pakistani users: there is no card or local bank checkout listed on the site. To pay, you would need a crypto wallet holding USDC on Base and an x402-compatible client. Getting USDC into a Base wallet from Pakistan depends on your exchange or P2P options, so check what is available to you and the current rules before starting.
