{"uid":"cap_jfapzDJknPi9j2TGqYSXc","slug":"scanna-matched-market-clusters-bf8fa5b7","name":"Scanna Matched Market Clusters","description":"Cross-venue matched market clusters from Postgres: cluster row, member markets with outcomes, optional related/raw edges. LIMIT/OFFSET pushed into SQL (max 100). Served matches are LLM-verified and stay valid, but COVERAGE can be incomplete: adjudication is a separate gated step and while paused no new match is promoted - see `freshness`. An empty page is a billable 200.","url":"https://api.scanna.xyz/matched-market-clusters","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":[],"properties":{"limit":{"type":"integer","default":20,"maximum":100,"minimum":1},"venue":{"enum":["polymarket","kalshi","limitless","polymarket_us","myriad","opinion"],"type":"string"},"offset":{"type":"integer","default":0,"maximum":10000,"minimum":0},"min_confidence":{"type":"number","default":0.6,"maximum":1,"minimum":0,"description":"Digit-led decimal only"},"include_related":{"type":"boolean","default":false,"description":"Adds related[]"},"anchor_market_id":{"type":"string","description":"Catalog market UUID"},"include_raw_edges":{"type":"boolean","default":false,"description":"Adds raw_edges[]"}},"description":"No clamping: an out-of-range or non-digit value is a 400, never an adjusted 200.","additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["clusters","freshness","limit","offset","total","updated_at"],"properties":{"limit":{"type":"integer"},"total":{"type":"integer","description":"Capped at 10000"},"offset":{"type":"integer"},"clusters":{"type":"array","items":{"type":"object","required":["cluster_id","canonical_title","category","confidence","volume_24h","updated_at","verified","relations","members"],"properties":{"members":{"type":"array","items":{"type":"object"},"description":"Member markets with outcomes[]; see the example"},"category":{"type":["string","null"]},"verified":{"type":"boolean","description":"Always true"},"relations":{"type":"array","items":{"type":"string"}},"cluster_id":{"type":"string"},"confidence":{"type":"number"},"updated_at":{"type":"string","format":"date-time"},"volume_24h":{"type":["number","null"]},"canonical_title":{"type":["string","null"]}}}},"freshness":{"type":"object","description":"See ClusterFreshness in openapi.yaml"},"updated_at":{"type":"string","format":"date-time"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.010008","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":"$0.010008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.010008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.010008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_37bNY2_h_sI93SQSEYYHX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.010008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns cross-venue matched and LLM-verified market clusters from Scanna's database, grouping equivalent prediction markets across Polymarket, Kalshi, Limitless, and other venues with member markets, outcomes, and optional relationship edges.","exampleAgentPrompt":"Show me the top 20 cross-venue matched market clusters on Kalshi with at least 0.8 confidence, including related markets — I want to see which questions are live on multiple platforms simultaneously.","exampleUseCases":[{"title":"Arbitrage opportunity discovery across platforms","prompt":"Find me matched market clusters that exist on both Polymarket and Kalshi with confidence above 0.85 — I want to spot markets where the same event is priced differently across venues."},{"title":"Deep dive on a specific prediction market","prompt":"Pull all cross-venue clusters anchored to market UUID 'b3f1a2c4-5678-90ab-cdef-1234567890ab', including raw edges and related markets, so I can see every equivalent question across venues."},{"title":"Monitoring high-volume cross-venue clusters","prompt":"Give me the first 50 matched market clusters across all venues sorted by 24-hour volume, with related markets included, so I can track where the most trading activity is happening right now."}],"resultDescription":"A paginated JSON response containing an array of cluster objects, each with a cluster_id, canonical_title, category, LLM-verified confidence score, 24-hour volume, updated_at timestamp, verified flag, relations array, and a members array of constituent markets with their outcomes. Also returns total count (capped at 10000), limit, offset, updated_at, and a freshness object indicating adjudication status. Optionally includes related[] and raw_edges[] arrays.","failureModes":["400 error if limit/offset is out of range or a non-digit value is passed for numeric parameters","400 error if an invalid venue enum value is provided","Empty page (0 clusters) returned as a billable 200 when no clusters match filters or coverage is incomplete due to paused adjudication","Incomplete coverage: new matches may not be promoted if adjudication is paused — freshness field signals this state","min_confidence must be a digit-led decimal; non-digit values return 400"],"whenToPreferThis":"Use this endpoint when you need to find equivalent prediction markets across multiple venues (Polymarket, Kalshi, Limitless, etc.) that cover the same underlying event. It is ideal for cross-venue arbitrage detection, market coverage analysis, or building unified views of prediction market activity. Prefer this over single-venue market feeds when cross-platform market matching with LLM verification and confidence scoring is required. Use the anchor_market_id parameter to pivot from a known market to its cross-venue equivalents.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:33:06.171Z","isFirstParty":false}