Cross-venue prediction-market keyword search across Polymarket, Kalshi, and Limi
Cross-venue prediction-market keyword search across Polymarket, Kalshi, and Limitless Exchange in one call. Pass q (required); filter by status (open/closed) and cap per-venue with limit. Each hit is tagged with its venue and returns the question, live YES/NO price (0-1 implied probability), USD volume, close date, and the venue URL — for finding the same real-world question wherever it trades. Read-only, keyless.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
252 msmedian answer time
$0.012listed price per call
$0.012price 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://2s.io/api/predict/search
| Category | Market data |
|---|---|
| Provider host | 2s.io |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 28 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 | $0.012 | 252 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"limit": 1,
"q": "xx",
"status": "open"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"method": {
"const": "GET"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"limit": {
"description": "Max results per venue (default 15).",
"maximum": 50,
"minimum": 1,
"type": "integer"
},
"q": {
"description": "Keyword(s) to search market questions for.",
"maxLength": 120,
"minLength": 2,
"type": "string"
},
"status": {
"description": "Filter by market status.",
"enum": [
"open",
"closed"
],
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"type": {
"const": "http"
}
},
"required": [
"type",
"method",
"queryParams"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}