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NBA Cross-Venue Championship Odds Gap (Polymarket vs Kalshi)
x402
NBA Cross-Venue Championship Odds Gap (Polymarket vs Kalshi) is a paid API for AI agents from nba-odds-gap.relayhop.workers.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Returns ranked list of 2026 NBA championship title implied-probability divergences between Polymarket and Kalshi, sorted by absolute gap size.
Price / call$0.05
Success—
StatusUnknown
How this service works
NBA championship odds gap: Polymarket vs Kalshi implied-probability divergence on the same 2026 NBA title outcomes, ranked by |gap|. Query: ?page=1-50&per_page=1-3. Sources: Polymarket Gamma + Kalshi public API + ESPN (all free, keyless).
Output
A ranked list (up to 3 per page, pages 1-50) of 2026 NBA title outcomes showing each team's implied probability on Polymarket and Kalshi, the absolute gap between them, and rank by divergence size — useful for spotting cross-market inefficiencies.
Example use cases
Example prompt
“Show me the top 3 NBA teams where Polymarket and Kalshi disagree most on 2026 championship odds — I want to see which markets are most out of sync right now.”
Technical details
Endpoint
GEThttps://nba-odds-gap.relayhop.workers.dev/v1/nba/cross-venue-signalsWhen to prefer
Use this endpoint when you need a pre-computed, ranked comparison of NBA championship odds divergence across Polymarket and Kalshi simultaneously — rather than querying each prediction market separately and computing gaps yourself. Ideal for agents doing cross-venue arbitrage analysis, prediction market research, or sports analytics without needing API keys.
Side effects
- page out of range (must be 1-50) returns error or empty result
- per_page exceeds cap of 3 returns capped or error response
- upstream Polymarket Gamma or Kalshi API unavailable causes stale or missing data
- payment of 0.05 USDC not provided returns 402 Payment Required
- no matching cross-listed NBA markets found returns empty signals list
Input
{
"input": {
"page": "1",
"per_page": "3"
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"data": {
"note": "Cross-venue implied-probability divergence (Polymarket vs Kalshi) on the same NBA championship outcomes, matched via ESPN team names. Factual market inefficiency — not betting advice.",
"page": 1,
"market": "NBA Championship 2026 (cross-venue)",
"venues": [
"polymarket",
"kalshi"
],
"matched": 0,
"signals": [],
"per_page": 3
},
"source": "/v1/nba/cross-venue-signals"
}Tags
x402
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