{"uid":"cap_ghszajYKUTxd1jAXoRHQq","slug":"annalist-market-outcomes-lookup-bba1585a","name":"Annalist Market Outcomes Lookup","description":"Signed data for AI agents, paid per call over x402. Hyperliquid crowd state, smart money and liquidations with what historically happened next, plus independent checks of x402 services and MCP servers.","url":"https://api.annalist.dev/v1/outcomes/market?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["id"],"properties":{"id":{"type":"string","pattern":"^[0-9]+$","description":"outcome id"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"data":{"id":8573,"sides":[{"name":"Yes","price":0.81}],"title":"Anthropic first-day market cap above $1500B"}}},"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_NWWJSirCprpn3ZiEcr0Sv","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":"Retrieves signed prediction market outcome data including sides and current prices for a given outcome ID","exampleAgentPrompt":"What's the current price on prediction market outcome 8573 — specifically the Yes side probability?","exampleUseCases":[{"title":"Check IPO market cap prediction odds","prompt":"Pull up the Annalist market outcome for ID 8573 and tell me what the Yes price is right now — I want to know what the crowd thinks about Anthropic's first-day market cap."},{"title":"Monitor election or event prediction probability","prompt":"Fetch the current outcome data for prediction market ID 12045 from Annalist and tell me what each side is priced at."},{"title":"Verify signed market data before trading","prompt":"I need the signed prediction market data for outcome ID 9001 — give me the title, the sides, and their current prices so I can cross-check before I take a position."}],"resultDescription":"Returns a JSON object containing the outcome ID, a title describing the prediction question, and an array of sides (e.g. Yes/No) each with a current price representing market probability. Data is cryptographically signed for agent verification.","failureModes":["Missing or invalid 'id' query parameter returns a validation error","Non-numeric outcome ID rejected by pattern validation","Unknown outcome ID returns a 404 or empty result","Payment failure over x402 protocol blocks access","Stale or unavailable market data may return outdated prices"],"whenToPreferThis":"Use this endpoint when you need signed, verifiable prediction market outcome data for a specific outcome ID, especially in agentic workflows where data provenance matters. Prefer this over unsigned alternatives when your agent needs to verify the integrity of market data before acting on it. Best when you already have the numeric outcome ID and need current side prices.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T06:41:37.353Z","isFirstParty":false,"canonicalSlug":"annalist-market-outcomes-lookup-bba1585a"}