{"uid":"cap_X9EyKQ1vZqkU-svWhIOJT","slug":"halowerk-defiwerk-oracle-crosscheck-910fb4fb","name":"HALOWERK defiwerk Oracle Crosscheck","description":"HALOWERK defiwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.","url":"https://defi.netzhandwerker.de/oracle/crosscheck","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"asset":{"enum":["ETH","BTC","USDC","USDT","DAI","LINK","CBETH","AERO"],"type":"string","description":"Asset symbol. Only assets whose sources were individually verified against the chain are available."},"chain":{"enum":["base","ethereum","arbitrum","optimism","polygon"],"type":"string","description":"Chain the on-chain sources are read from. Off-chain sources are chain independent."},"oracles":{"type":"array","items":{"enum":["chainlink","pyth","redstone","cex","dex_spot","dex_twap"],"type":"string"},"description":"Optional filter for source types. Omitted means all available types."}}},"responseSchema":null,"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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_u9nXK9wkmGTD93R8f3wuE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Aggregates and cross-checks crypto asset prices from multiple oracle sources (Chainlink, Pyth, RedStone, CEX, DEX spot/TWAP) across major EVM chains","exampleAgentPrompt":"Cross-check the current ETH price on Base using all available oracle sources — Chainlink, Pyth, RedStone, CEX, and DEX spot — and show me how they compare.","exampleUseCases":[{"title":"Oracle divergence detection for DeFi protocol","prompt":"Check whether Chainlink and Pyth agree on the current BTC price on Ethereum right now — flag any significant divergence between them."},{"title":"Pre-trade price sanity check","prompt":"Before I execute a large LINK trade, can you pull the DEX spot and DEX TWAP prices for LINK on Arbitrum and compare them against the Chainlink feed to make sure nothing looks off?"},{"title":"Multi-chain oracle audit for stablecoin","prompt":"Fetch the DAI price from all available oracle sources on Base and Polygon so I can verify the peg is holding consistently across both chains."}],"resultDescription":"Returns price readings for the requested asset from multiple oracle sources (e.g. Chainlink, Pyth, RedStone, CEX reference price, DEX spot, DEX TWAP) on the specified chain, allowing comparison and cross-validation of price data across sources.","failureModes":["Asset not supported on the specified chain — returns error indicating unavailability","Oracle source type not available for the given asset/chain combination","Payment failure via x402 — endpoint returns 402 if USDC payment on Base Mainnet is not provided or insufficient","Invalid asset or chain enum value — request rejected with validation error","Network or RPC issues causing on-chain source reads to fail"],"whenToPreferThis":"Use this endpoint when you need to cross-validate crypto asset prices across multiple oracle sources rather than trusting a single feed. Ideal for DeFi risk management, arbitrage detection, oracle manipulation checks, and pre-trade sanity checks. Prefer this over single-oracle price feeds when price integrity and multi-source consensus matter. Best suited for Base, Ethereum, Arbitrum, Optimism, and Polygon for the supported assets (ETH, BTC, USDC, USDT, DAI, LINK, CBETH, AERO).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:37:03.435Z","isFirstParty":false}