Opengateway Inference Credits Top-Up $25

Choose this endpoint when you need to add exactly $25 of Opengateway inference credits in a single transaction using the x402 crypto payment protocol. Prefer the $5 or $10 variants for smaller top-ups, or the $50 variant for larger bulk purchases.

• Insufficient USDC balance results in payment failure
• Invalid or missing x402 payment header returns 402 Payment Required
• Network timeout during payment processing
• Duplicate payment attempt may fail if already in progress
• Account not found or misconfigured returns error