{"uid":"cap_MbJMcYop0vzM1BJEZL1vS","slug":"proofwork-base-market-pulse-f94c66b7","name":"Proofwork Base Market Pulse","description":"Small non-cyber evidence and data APIs payable per request with x402 on Base.","url":"https://proofwork-the402-webhook.phase-voice.workers.dev/v1/base-market-pulse","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":{},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"report":"base_eth_cross_source_market_pulse","observed_at":"2026-08-12T00:00:00.000Z","base_network":{"chain_id":8453,"market_data_provider":"GeckoTerminal keyless public API"},"base_dex_pool":{"pair":"WETH/USDC","price_usd":4001,"liquidity_usd":1000000},"coinbase_reference":{"pair":"ETH-USD","spot_usd":4000}}},"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_umRx0MrmoOhTMBP-cVQmC","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 cross-source ETH/USDC market pulse report comparing Base DEX pool prices against Coinbase reference spot prices, including spread percentage and liquidity data.","exampleAgentPrompt":"Can you pull the latest Base market pulse report showing the WETH/USDC pool price on Base DEX versus the Coinbase ETH-USD spot price, and tell me what the current spread is?","exampleUseCases":[{"title":"Arbitrage spread monitoring on Base","prompt":"What's the current price spread between the WETH/USDC pool on Base DEX and Coinbase's ETH-USD spot price right now? I want to know if there's a meaningful arbitrage opportunity."},{"title":"DeFi price verification for trading bot","prompt":"Fetch me an evidence-grade market pulse report for ETH on Base — I need the DEX pool price, Coinbase reference price, and the signed spread percentage so my trading bot can decide whether to execute."},{"title":"On-chain market data audit","prompt":"I need a cross-source market data snapshot for Base — give me the latest reported block, the WETH/USDC pool liquidity in USD, and how far the DEX price is from Coinbase's spot price."}],"resultDescription":"A JSON report containing the report type identifier, observed timestamp, Base chain ID and latest block number, the signed spread percentage between DEX and reference prices, the WETH/USDC DEX pool price in USD and liquidity in USD, and the Coinbase ETH-USD spot reference price.","failureModes":["Payment not received or insufficient USDC (x402 payment required, $0.01 USDC)","Base network RPC unavailable or lagging, leading to stale block data","Coinbase price feed temporarily unavailable, causing incomplete cross-source comparison","DEX pool data unavailable due to subgraph or indexer downtime","Rate limiting if payment processing fails repeatedly"],"whenToPreferThis":"Choose this endpoint when you need a low-cost ($0.01), verifiable, evidence-grade snapshot of ETH market conditions on the Base network that cross-references on-chain DEX data with a centralized Coinbase spot price. It is ideal for agents that need cryptographically auditable market data rather than a raw price oracle, or when building on Base and needing both DEX liquidity context and a CEX price anchor in a single call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:39:43.480Z","isFirstParty":false}