{"uid":"cap_VB8JofAUkiNVz1WFgjqJ-","slug":"stablecoin-peg-monitor-6aeeb89d","name":"Stablecoin Peg Monitor","description":"Stablecoin peg monitor: Chainlink oracle price, deviation from $1 in basis points, a depeg flag (over 1%) and on-chain total supply per chain for USDC, USDT, DAI and USDe across Ethereum, Base, Arbitrum, Optimism and Polygon. Live reads, one Multicall3 per chain. Free sample: https://onchain-health.mick8511.workers.dev/sample","url":"https://onchain-health.mick8511.workers.dev/stablecoin-peg?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chains":{"type":"string","description":"Comma list of chains (default all 5)"},"symbols":{"type":"string","description":"Comma list: USDC,USDT,DAI,USDe (default all)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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_CiemuuIpSzsUIeaWy0zaW","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 Chainlink oracle prices, deviation from $1 in basis points, depeg flags, and on-chain total supply for USDC, USDT, DAI, and USDe across up to 5 EVM chains.","exampleAgentPrompt":"Check the peg health for USDC and USDT on Ethereum, Base, and Arbitrum right now — I want to see the Chainlink oracle price, how many basis points they're off from $1, whether either has a depeg flag, and their on-chain total supply.","exampleUseCases":[{"title":"DeFi protocol risk alert","prompt":"I need to know immediately if any of USDC, USDT, DAI, or USDe are more than 1% off their $1 peg on Ethereum or Arbitrum — check all four and flag anything that looks like a depeg."},{"title":"Cross-chain stablecoin supply audit","prompt":"Can you pull the on-chain total supply for USDT and USDC across all five chains — Ethereum, Base, Arbitrum, Optimism, and Polygon — along with their current Chainlink oracle prices?"},{"title":"Single stablecoin peg check","prompt":"What's DAI's current price deviation from $1 in basis points on Ethereum and Optimism? I want the Chainlink oracle reading and whether it's triggered the depeg flag."}],"resultDescription":"A structured response per chain and stablecoin containing: the Chainlink oracle price, the deviation from $1 expressed in basis points, a boolean depeg flag (true when deviation exceeds 1%), and the on-chain total supply. Data is fetched live via one Multicall3 call per chain.","failureModes":["Chain or symbol not supported — returns error or empty data for that selection","Chainlink oracle stale or unresponsive — may return stale price with age indicator","RPC node unavailable for a given chain — that chain's data may be missing","Invalid comma-separated chain/symbol values — may result in 400 or partial response","Payment not processed (x402) — request rejected before data is returned"],"whenToPreferThis":"Choose this endpoint when you need live, on-chain stablecoin peg data with Chainlink oracle prices, basis-point deviation, and supply figures across multiple EVM chains in a single call. It covers all major stablecoins (USDC, USDT, DAI, USDe) and uses Multicall3 for efficiency. Prefer this over centralized exchange price feeds when you need verifiable on-chain oracle data for DeFi risk monitoring or alerting systems.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:34:19.939Z","isFirstParty":false,"canonicalSlug":"stablecoin-peg-monitor-6aeeb89d"}