{"uid":"cap_8ETBgUaPx9SpOnXKwbVKM","slug":"cow-protocol-batch-auction-latest-results-4f0342bb","name":"CoW Protocol Batch Auction Latest Results","description":"CoW Protocol (Ethereum) latest batch auction result: auction id and block window, number of solver solutions, the winning solution (solver, score, ranking, settlement tx), and the top five solutions by ranking. Order details and clearing prices are not returned in this summary.","url":"https://api.chainmarket-api.workers.dev/api/crypto/cowswap-batch-auctions?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","required":[],"properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"source":"https://api.cow.fi/mainnet/api/v2/solver_competition/latest","winner":{"score":"1840915047916452","txHash":"0xcc3d963ee09ba0cd1c7b913d38077486c7d2805b0718786daf7923ec738857ab","ranking":1,"isWinner":true,"filteredOut":false,"solverAddress":"0x5ed864e8f37dcb4f79c5172a815d1b3a9147eaab"},"fastPath":false,"auctionId":14085941,"checkedAt":"2026-10-23T09:36:04.956Z","topSolutions":[{"score":"1840915047916452","txHash":"0xcc3d963ee09ba0cd1c7b913d38077486c7d2805b0718786daf7923ec738857ab","ranking":1,"isWinner":true,"filteredOut":false,"solverAddress":"0x5ed864e8f37dcb4f79c5172a815d1b3a9147eaab"},{"score":"1839997173481749","txHash":null,"ranking":2,"isWinner":false,"filteredOut":false,"solverAddress":"0x5c3593481cba011737e36ded62f1797c9f6afce1"}],"solutionCount":12,"auctionStartBlock":26254464,"auctionDeadlineBlock":26254466}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Woswh2ppCrAU6IhYDN2sX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches the latest CoW Protocol batch auction competition results, including winning solver, scores, and top solutions from Ethereum mainnet.","exampleAgentPrompt":"Who won the latest CoW Protocol batch auction on Ethereum mainnet — show me the winning solver address, their score, and the transaction hash?","exampleUseCases":[{"title":"Monitor CoW Protocol solver dominance","prompt":"Which solver is currently winning CoW Protocol batch auctions most often? Pull the latest auction result and show me the winning solver address and their score."},{"title":"Verify a CoW Swap settlement transaction","prompt":"I need to confirm the transaction hash for the most recently settled CoW Protocol batch auction — can you fetch the latest auction result and give me the on-chain tx hash?"},{"title":"Track CoW batch auction competition health","prompt":"How competitive is the latest CoW Protocol batch auction? Show me how many solvers submitted solutions and what the top two scores were."}],"resultDescription":"Returns a JSON object with the latest CoW Protocol batch auction details including: auction ID, the winning solver's address, score, transaction hash, and ranking; an ordered list of top solutions with their scores, solver addresses, and whether they were filtered out; the total solution count; the auction start and deadline block numbers; and the timestamp when data was checked.","failureModes":["CoW Protocol API upstream unavailability returning 503 or timeout","No auction data if CoW Protocol mainnet is paused or inactive","Stale data if the upstream CoW API has a delay","Payment failure if USDC balance is insufficient (call not charged on failure)"],"whenToPreferThis":"Choose this endpoint when you need real-time, no-signup access to the latest CoW Protocol (CoW Swap) solver competition results on Ethereum mainnet. Prefer it over querying the CoW API directly when you want pay-per-call access without API key registration, or when building agents that need periodic auction monitoring without managing credentials.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-24T12:46:26.687Z","isFirstParty":false,"canonicalSlug":"cow-protocol-batch-auction-latest-results-4f0342bb"}