{"uid":"cap_79awfPqwCDR3fb-OlOc8L","slug":"vauban-pay-x402-api-payment-base-mainnet-4f006580","name":"Vauban Pay – x402 API Payment (Base Mainnet)","description":"Your agent pays per call and keeps the receipt, on Base and on Starknet. Try it with test money in one command.","url":"https://pay.vauban.tech/x402-base-mainnet/v1/quote?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_MKAWHuw9izOuBsWqgnAVJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a payment quote for a per-call API fee denominated in USDC on Base mainnet, anchoring every transaction as a public record on Starknet.","exampleAgentPrompt":"Get me a payment quote to pay for this API call in USDC on Base mainnet — I want the on-chain receipt recorded on Starknet via Vauban Pay.","exampleUseCases":[{"title":"Micropayment gate for agent tool","prompt":"Before calling that paid API endpoint, get me a Vauban Pay quote for $0.01 USDC on Base mainnet so I can authorize and complete the payment and keep the Starknet receipt."},{"title":"On-chain audit trail for API spend","prompt":"I need every API call my agent makes to leave a public record on Starknet — use Vauban Pay to quote and process each $0.01 USDC payment on Base so I have a verifiable receipt for each one."},{"title":"Unlock per-call API access with stablecoin","prompt":"This API requires a pay-per-call fee — can you use Vauban Pay to get a USDC quote on Base mainnet and settle the $0.01 payment so the call goes through?"}],"resultDescription":"A payment quote object specifying the exact USDC amount due on Base mainnet, along with the data needed to authorize and complete the on-chain payment; successful settlement produces a public transaction record on Starknet serving as a receipt.","failureModes":["Insufficient USDC balance on Base mainnet — payment cannot be authorized","Invalid or malformed request body — quote cannot be generated","Network congestion on Base causing transaction delays or failures","Starknet record anchoring failure if cross-chain bridge is unavailable","Quote expiry if payment is not completed within the validity window"],"whenToPreferThis":"Choose this endpoint when your agent needs to pay for API access using the x402 pay-per-call protocol with USDC on Base mainnet and requires a publicly verifiable on-chain receipt anchored to Starknet. It is ideal for agent workflows that must comply with per-call billing, need audit trails, or want stablecoin-denominated micropayments rather than subscription-based access.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-25T18:38:17.829Z","isFirstParty":false,"canonicalSlug":"vauban-pay-x402-api-payment-base-mainnet-4f006580"}