{"uid":"cap_ksk9fHlI6yigIMNv5MLe3","slug":"santyvv-defi-stablecoin-chains-lookup-d76811fe","name":"Santyvv DeFi Stablecoin Chains Lookup","description":"Market and on-chain data, paid per call in USDC on Base through the x402 protocol. No accounts, no API keys. Sources are public data providers; the value added here is keyless access, edge caching, multi-source fallback and normalised responses.","url":"https://x402.santyvv.com/api/defi/stablecoin-chains?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"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_b4WtnWYhqtuDgwWY5Itxa","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 list of blockchain networks that support a given stablecoin, paid per-call in USDC via the x402 protocol with no API key required.","exampleAgentPrompt":"Which blockchains have USDC deployed on them? I want a normalized list with no API key setup — just pay per call.","exampleUseCases":[{"title":"Multi-chain stablecoin deployment audit","prompt":"Give me a full list of all chains where USDC is currently deployed so I can decide which networks to support in my DeFi app."},{"title":"L2 stablecoin availability check","prompt":"I'm building on Base and Arbitrum — can you check which of those chains have major stablecoins like USDT and DAI available on-chain?"},{"title":"Cross-chain yield strategy research","prompt":"I'm researching stablecoin yield strategies across chains — can you pull which networks support DAI so I know where liquidity exists?"}],"resultDescription":"A normalized list of blockchain networks where the queried stablecoin is deployed, potentially including chain names, chain IDs, contract addresses, and deployment metadata. Response is edge-cached and sourced from aggregated public on-chain data providers.","failureModes":["Payment not received or insufficient USDC balance — returns HTTP 402 with payment requirements","Invalid or unsupported stablecoin identifier — may return empty list or 400 error","Upstream data provider unavailable — fallback sources used but may result in partial data","Rate limit or network congestion on Base — payment transaction may fail or delay","Malformed request parameters — returns 400 bad request"],"whenToPreferThis":"Choose this endpoint when you need stablecoin-to-chain mapping data without setting up an account or API key, and are comfortable paying $0.01 USDC per call via the x402 micropayment protocol on Base. Ideal for agents that need on-demand, keyless access to normalized DeFi chain data with edge caching and multi-source fallback, especially in automated or ephemeral workflows where credential management is impractical.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T06:40:03.652Z","isFirstParty":false,"canonicalSlug":"santyvv-defi-stablecoin-chains-lookup-d76811fe"}