{"uid":"cap_mLfK05phiogKbdxb2sENn","slug":"polymarket-prediction-stream-2b4ee3d3","name":"Polymarket Prediction Stream","description":"Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.","url":"https://mcp-gateway.agentdiet.dev/v1/polymarket-prediction-stream?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","POST"],"type":"string"},"queryParams":{"type":"object","properties":{"topic":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"data":{},"status":"ok","roi_proof":{"compression_ratio_pct":91.4}}},"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_Ddwk_pjDIywxe0lLo6Mu2","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":"Streams compressed Polymarket prediction market data filtered by topic, returning structured probability and market intelligence via a pay-per-call x402 gateway.","exampleAgentPrompt":"What does Polymarket currently say about the probability of a US recession this year? Stream me the latest prediction market data on that topic.","exampleUseCases":[{"title":"Election outcome probability lookup","prompt":"What are the current Polymarket odds that a specific candidate wins the 2024 presidential election? Pull the latest prediction market stream for that topic."},{"title":"Crypto event forecasting for trading agent","prompt":"Get me the Polymarket prediction stream for Bitcoin ETF approval — I want to know what the market currently thinks the probability is before I make a move."},{"title":"AI agent real-time event monitoring","prompt":"My agent needs to continuously check Polymarket's current odds on whether the Fed will cut rates this quarter — can you pull that prediction stream filtered to Fed interest rate decisions?"}],"resultDescription":"Returns a JSON object with a status field ('ok'), a data object containing Polymarket prediction market information for the requested topic, and an roi_proof object showing compression metadata (e.g. compression_ratio_pct: 91.4), indicating the data has been efficiently compressed for agent consumption.","failureModes":["Missing or invalid 'topic' query parameter returns empty or generic data","Payment failure (402) if USDC on Base is not available or insufficient","Rate limiting or gateway timeout if upstream Polymarket data is unavailable","Invalid method type returns schema validation error","Topic string returns no matching markets if query is too narrow or misspelled"],"whenToPreferThis":"Use this endpoint when an AI agent needs structured, compressed Polymarket prediction market probabilities for a specific topic in real time, especially in agentic pipelines that require pay-per-call micro-payment billing via x402/USDC. Prefer this over direct Polymarket API access when operating within an MCP or A2A agent framework that handles x402 payment settlement automatically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T12:42:49.508Z","isFirstParty":false,"canonicalSlug":"polymarket-prediction-stream-2b4ee3d3"}