{"ok":true,"payment_methods":[{"id":"stripe_card","name":"Credit/Debit Card (Stripe)","description":"Visa, Mastercard, Amex via Stripe. Recommended for companies.","type":"card","icon":"💳","cost_options":[10,25,50,100,500],"processing_time":"instant","fees":{"percent":2.9,"fixed":0.3,"example":"$25 → fee $1.02 → you get $23.97"},"min_amount":5,"max_amount":10000,"recommended":true,"initiate_url":"/api/billing/stripe/create-checkout","instructions":"POST to initiate_url with {mode: 'payment', credit_amount_usd: N, api_key_id: 'xxx'}. Returns Stripe Checkout URL."},{"id":"usdc_base","name":"USDC on Base L2 (MetaMask)","description":"Pay with USDC stablecoin. Recommended for autonomous crypto-native agents.","type":"crypto","icon":"🪙","cost_options":[5,10,25,50,100],"processing_time":"~3 seconds","fees":{"percent":0,"fixed":0.001,"example":"$25 → gas ~$0.001 → you get ~$24.999"},"min_amount":1,"max_amount":100000,"recommended":false,"initiate_url":"/api/wallet/charge","instructions":"1. Connect MetaMask wallet to /developers portal. 2. Click 'Top up $N'. 3. Sign USDC transfer in MetaMask. 4. Credit added automatically."}],"selection_guide":{"for_companies":"stripe_card — supports invoices, receipts, bank statements","for_autonomous_agents":"usdc_base — no human interaction, instant settlement, works 24/7","for_testing":"Use sandbox at /api/v1/sandbox/* — no payment needed"},"provider":{"name":"IVPools","website":"https://ivpools.eu"}}