{"uid":"cap_ftI7-e_cgQS_YyCYQt5oy","slug":"coinopselect-intent-quote-api-5d16a976","name":"CoinOpSelect Intent Quote API","description":"Paid on-chain token, wallet, contract and research data over x402 on Base.","url":"https://coinop.publicvm.com/api/v1/intent/quote?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string"},"method":{"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"buy":{"type":"string","description":"Buy token symbol"},"sell":{"type":"string","description":"Sell token symbol"},"fillPrice":{"type":"string","description":"Fill price number"},"limitPrice":{"type":"string","description":"Limit price number"}}}}},"output":{"type":"object","properties":{"fill":{"type":"object"},"query":{"type":"string"}}}}},"responseSchema":{"type":"json","example":{"fill":{},"query":"intent-quote"}},"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_kVvZh4w728_AMzZN6t8TO","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 fill quote and query result for a token swap intent, given buy/sell token symbols and pricing parameters, paid via x402 on Base.","exampleAgentPrompt":"Get me an intent quote on CoinOpSelect to buy ETH and sell USDC, with a fill price of 3200 and a limit price of 3250.","exampleUseCases":[{"title":"Token swap price check before trade","prompt":"Can you pull a quote for swapping USDC to WETH on CoinOpSelect? I want to see the fill with a fill price of 3200 and a limit price of 3250 before I commit to the trade."},{"title":"DeFi limit order cost estimation","prompt":"I'm planning a limit order to buy cbETH with USDC — can you get me the intent quote from CoinOpSelect with a limit price of 2400 and fill price of 2380 so I can see what I'd get?"},{"title":"Arbitrage opportunity evaluation","prompt":"Check the CoinOpSelect intent quote for selling DAI and buying ARB at a fill price of 1.05 and limit price of 1.10 — I want to see if the fill looks favorable before I execute."}],"resultDescription":"Returns a JSON object containing a 'fill' object with swap quote details and a 'query' string confirming the intent type ('intent-quote'). The fill object contains the computed result of the swap intent including pricing and execution data.","failureModes":["Missing required 'type' or 'method' fields in input object returns a 400 validation error","Invalid or unsupported token symbols for buy/sell may return empty fill or error","Payment not received via x402 (HTTP 402) blocks access to the endpoint","Fill price or limit price formatted as non-numeric string may cause computation error","Network or blockchain data unavailability may cause delayed or failed quote responses"],"whenToPreferThis":"Use this endpoint when you need an on-chain intent-based swap quote specifically on Base, paid per-call via x402 micropayments in USDC. Prefer this over general DEX aggregators when you want programmatic, agent-friendly quote retrieval with minimal overhead and pay-as-you-go pricing without API key management.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:00.424Z","isFirstParty":false,"canonicalSlug":"coinopselect-intent-quote-api-5d16a976"}