{"uid":"cap_0ZV5jv8ijQ9xBRzR3lfvC","slug":"polkadot-top-of-order-book-1ddc727d","name":"Polkadot Top of Order Book","description":"Polkadot Top of order book: Return the best bid and ask levels from the public order book. Coinbase Exchange public USD market data; not investment advice.","url":"https://market.datapackvibe.com/x402/demand-market-polkadot-orderbook-top?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"product":{"type":"string","default":"DOT-USD","description":"Coinbase USD product ID; defaults to DOT-USD."}}},"responseSchema":null,"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_qXDuMIiByzZcQw3Jcup1t","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 the best bid and ask prices from Coinbase Exchange's public DOT-USD order book","exampleAgentPrompt":"What are the current best bid and ask prices for Polkadot on Coinbase — give me the top of the DOT-USD order book right now.","exampleUseCases":[{"title":"Live DOT spread monitoring for trading bot","prompt":"Check the best bid and ask for DOT-USD on Coinbase right now so I can decide whether the spread is tight enough to place a limit order."},{"title":"Arbitrage entry signal check","prompt":"What's the current top of the Polkadot order book on Coinbase? I need the best bid and ask prices to see if there's an arbitrage opportunity with another exchange."},{"title":"Market snapshot for DOT portfolio tracker","prompt":"Pull the latest best bid and ask for DOT-USD so I can mark my Polkadot holdings to market at the current mid-price."}],"resultDescription":"Returns the best bid price and best ask price at the top of the Coinbase Exchange DOT-USD public order book, representing the highest price a buyer is willing to pay and the lowest price a seller is willing to accept at the moment of the query.","failureModes":["Invalid product ID returns an error — only Coinbase-listed USD product IDs are accepted","Order book temporarily unavailable during exchange maintenance results in an error response","Network timeout if the endpoint is unreachable","Payment failure if the $0.01 USDC x402 payment is not properly submitted"],"whenToPreferThis":"Use this endpoint when you need a lightweight, real-time snapshot of the best bid and ask for Polkadot (DOT-USD) without pulling the full order book depth. It is ideal for spread calculations, mid-price estimates, or triggering trading signals where only the inside market matters. Prefer it over full order book endpoints when bandwidth and latency matter and deep liquidity data is not required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:44:41.128Z","isFirstParty":false,"canonicalSlug":"polkadot-top-of-order-book-1ddc727d"}