Cross-venue prediction market disagreement API for Polymarket, Kalshi, and Gemin
Cross-venue prediction market disagreement API for Polymarket, Kalshi, and Gemini. Finds active related markets where venues price the same YES or NO outcome differently, with match confidence, price gap, liquidity, volume, and market identifiers.
Asked 100.0x its listed price for its own exampleour last check, 2026-09-24
1 of 1checks answered this week
256 msmedian answer time
$0.001listed price per call
$0.1price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.seerium.xyz/v1/prediction/cross-venue-disagreement
| Category | Market data |
|---|---|
| Provider host | api.seerium.xyz |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.1 | 256 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"includeIndicative": true,
"limit": 25,
"minGap": 0.01,
"minMatchConfidence": 0.7,
"sources": "polymarket,kalshi,gemini"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"includeIndicative": {
"description": "Optional flag to include indicative price-only markets. Defaults to true.",
"type": "boolean"
},
"limit": {
"description": "Optional maximum disagreement rows to return. Defaults to 25.",
"maximum": 100,
"minimum": 1,
"type": "number"
},
"minGap": {
"description": "Optional minimum price gap. Use 0.01 or 1 for one percentage point. Defaults to 0.01.",
"maximum": 1,
"minimum": 0,
"type": "number"
},
"minMatchConfidence": {
"description": "Optional minimum market match confidence. Use 0-1 or 0-100. Defaults to 0.7.",
"maximum": 1,
"minimum": 0,
"type": "number"
},
"sources": {
"description": "Optional comma-separated venue filter: polymarket, kalshi, gemini. Defaults to all.",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}