{"uid":"cap_5joF2Xm8UjMLmkPrAHA7B","slug":"x402-data-api-stablecoins-by-circulating-supply-dc17afd6","name":"x402-data-api Stablecoins by Circulating Supply","description":"Top stablecoins by circulating supply (DefiLlama): name, symbol, price, peg type, circulating USD. No params. Use when an agent needs stablecoin supply and depeg checks.","url":"https://x402-data-api.sigrunner.workers.dev/crypto/stablecoins?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"},"queryParams":{"type":"object","properties":{"limit":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["stablecoins"],"properties":{"stablecoins":{"type":"array","items":{"type":"object","required":["symbol","price","circulating_usd"],"properties":{"price":{"type":"number"},"symbol":{"type":"string"},"circulating_usd":{"type":"integer"}}}}}}}}}},"responseSchema":{"type":"json","example":{"stablecoins":[{"price":0.9994,"symbol":"USDT","circulating_usd":183456438967}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wQCoEicmpMHAevgEfTq3x","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns top stablecoins ranked by circulating supply from DefiLlama, including name, symbol, price, peg type, and circulating USD value.","exampleAgentPrompt":"Can you pull the current list of top stablecoins by circulating supply and flag any that look like they might have depegged from $1?","exampleUseCases":[{"title":"Stablecoin depeg alert monitoring","prompt":"Check all major stablecoins right now and tell me if any of them have depegged — specifically flag anything trading below $0.99 or above $1.01."},{"title":"DeFi portfolio stablecoin exposure report","prompt":"Give me a breakdown of the top stablecoins by circulating supply so I can understand which ones dominate the market and how much risk is concentrated in each."},{"title":"Comparing USDT vs USDC market share","prompt":"What's the current circulating supply of USDT versus USDC, and which one is bigger right now?"}],"resultDescription":"A JSON array of top stablecoins, each with symbol, current price (in USD), and circulating supply in USD. Optionally limited by a `limit` query parameter. Data is sourced from DefiLlama and reflects near-real-time supply figures.","failureModes":["DefiLlama upstream unavailable — may return 502 or empty data","Payment not processed — returns 402 if USDC payment fails","Invalid `limit` parameter type — may be ignored or cause 400 error","Rate limiting or worker timeout on Cloudflare edge"],"whenToPreferThis":"Use this endpoint when you need a quick, no-auth, pay-per-call snapshot of the stablecoin market ranked by circulating supply — especially for depeg checks or market share comparisons. Prefer this over building a DefiLlama integration yourself when low cost and simplicity matter. Best suited for agents that need occasional stablecoin market data without a subscription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T07:21:23.114Z","isFirstParty":false,"canonicalSlug":"x402-data-api-stablecoins-by-circulating-supply-dc17afd6"}