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OpenAPI
API referenceMatched markets

Matched markets.

Find matched Kalshi and Polymarket markets and compare their quoted probabilities.

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Matched markets

GET/cross-platform/matchesREST

Retrieve matched markets with a configurable confidence threshold. Matches use offset pagination and return a data array with meta containing total, count, limit, and offset.

cURL
curl --fail-with-body \
  "$IMPLYRA_API_URL/cross-platform/matches?limit=20&minScore=0.5&verifiedOnly=true"
limitnumber · default 20
Results to return, from 1 to 100.
offsetnumber · default 0
The number of matched pairs to skip.
minScorenumber · default 0.35
Minimum match score, from 0 to 1.
searchstring · optional
Text search, up to 200 characters.
verifiedOnlystring · optional
Set to true to restrict results to verified matches.

Price divergence

GET/cross-platform/arbitrageREST

Query matched markets whose quoted probabilities diverge by at least your threshold. A minDivergence of 0.03 represents three percentage points.

limitnumber · default 20
Results to return, from 1 to 100.
minDivergencenumber · default 0.03
Minimum probability divergence, from 0 to 1.
minScorenumber · default 0.5
Minimum matched-market confidence, from 0 to 1.

Venue coverage

Cross-venue matching currently covers Kalshi and Polymarket. Market discovery and wallet endpoints have their own datasets; a matched pair does not imply identical analytics coverage on both venues.

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