{"uid":"cap_2OYt34A2O4pzupwLyC2wI","slug":"x402stock-basis-data-dcd24fd4","name":"x402stock Basis Data","description":"Scans every US stock that also trades as a 24/7 synthetic perp and returns the gap: official (delayed) price, prev close, perp mark and oracle, funding APR, open interest, and computed `basis_percent` + `basis_vs_prev_close_percent` — the implied overnight move while the US market is shut. Widest dislocation first, plus a plain-English `reading`. `?limit=`, `?min_basis=`. From x402stock","url":"https://agents.x402stock.xyz/api/v1/basis?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"object","required":["source","as_of","venue_map","us_market_open","reading","method","count","rows","sections","note","total_available"],"properties":{"note":{"anyOf":[{"type":"string"},{"type":"null"}]},"rows":{"type":"array","items":{"type":"object","required":["ticker","equity_price","equity_prev_close","equity_change_percent","equity_as_of","perp_symbol","perp_mark","perp_oracle","perp_funding_apr_percent","perp_open_interest","perp_day_volume_usd","basis_percent","basis_absolute","basis_vs_prev_close_percent","direction","comparable","excluded_reason"],"properties":{"ticker":{"type":"string"},"direction":{"enum":["premium","discount","flat","unknown"],"type":"string"},"perp_mark":{"anyOf":[{"type":"number"},{"type":"null"}]},"comparable":{"type":"boolean"},"perp_oracle":{"anyOf":[{"type":"number"},{"type":"null"}]},"perp_symbol":{"anyOf":[{"type":"string"},{"type":"null"}]},"equity_as_of":{"anyOf":[{"type":"string"},{"type":"null"}]},"equity_price":{"anyOf":[{"type":"number"},{"type":"null"}]},"basis_percent":{"anyOf":[{"type":"number"},{"type":"null"}]},"basis_absolute":{"anyOf":[{"type":"number"},{"type":"null"}]},"excluded_reason":{"anyOf":[{"type":"string"},{"type":"null"}]},"equity_prev_close":{"anyOf":[{"type":"number"},{"type":"null"}]},"perp_open_interest":{"anyOf":[{"type":"number"},{"type":"null"}]},"perp_day_volume_usd":{"anyOf":[{"type":"number"},{"type":"null"}]},"equity_change_percent":{"anyOf":[{"type":"number"},{"type":"null"}]},"perp_funding_apr_percent":{"anyOf":[{"type":"number"},{"type":"null"}]},"basis_vs_prev_close_percent":{"anyOf":[{"type":"number"},{"type":"null"}]}},"additionalProperties":false}},"as_of":{"type":"string"},"count":{"type":"number"},"method":{"type":"string"},"source":{"type":"string","const":"x402stock"},"reading":{"type":"string"},"sections":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{"enum":["ok","unavailable"],"type":"string"}},"venue_map":{"type":"object","required":["equity","perp"],"properties":{"perp":{"type":"string"},"equity":{"type":"string"}},"additionalProperties":false},"us_market_open":{"type":"boolean"},"total_available":{"type":"number"}},"additionalProperties":false},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_D0Wri5BG2r3Ct8wGMUiYj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null},{"uid":"pm_ExA25Um8TFEjCx5kfkZby","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x20C000000000000000000000b9537d11c60E8b50","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns basis (spot-futures spread) data for financial instruments via pay-per-request USDC micropayment","exampleAgentPrompt":"What's the current basis — the spot-futures spread — for Bitcoin right now? I want to see if there's a cash-and-carry opportunity.","exampleUseCases":[{"title":"Crypto basis arbitrage screening","prompt":"Check the current basis between Bitcoin spot and futures so I can evaluate whether a cash-and-carry trade makes sense today."},{"title":"Contango vs backwardation monitoring","prompt":"Is crude oil futures in contango or backwardation right now? Give me the basis spread between spot and the front-month contract."},{"title":"Perp funding implied basis check","prompt":"What's the implied basis on Ethereum perps on Hyperliquid right now — I want to compare it against the spot price to see if there's a funding arbitrage."}],"resultDescription":"Returns basis data representing the spread between spot and futures (or perpetual) prices for the requested instrument, including spot price, futures/perp price, computed basis value, and timestamp. Enables analysis of contango, backwardation, and cash-and-carry opportunities.","failureModes":["Invalid or unsupported instrument symbol returns 400 or empty result","Payment not received or insufficient USDC balance causes 402 Payment Required","Rate limiting or upstream data unavailability returns 503","Malformed properties parameter causes schema validation error"],"whenToPreferThis":"Choose this endpoint when you need basis (spot-futures spread) data for arbitrage analysis, carry trade evaluation, or monitoring contango/backwardation across crypto, commodities, or other markets. Prefer over generic price endpoints when the relationship between spot and futures is the key quantity. Requires no API key — just pay $0.05 USDC per call via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T18:47:00.410Z","isFirstParty":false,"canonicalSlug":"x402stock-basis-data-dcd24fd4"}