Overview
This route: $1 USDC adds $1.00 to an existing key (send the key as Authorization: Bearer). Make one x402 payment ($1, or $5 for $5.50 of credits) and get an API key that works on all 9 YourAITools agent APIs via Authorization: Bearer. Each call debits that route's normal price. Balance check is free and failed calls aren't charged. Prepaid API usage only. Not money, not a token, not an investment; no cash value, no withdrawals, no refunds. Built by YourAITools (youraitools.co).