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Weather Settlement Data for Prediction Markets (Kalshi & Polymarket)
x402
Weather Settlement Data for Prediction Markets (Kalshi & Polymarket) is a paid API for AI agents from weather-x402.linholiday.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Returns official temperature settlement data (high/low in °F) for a given ICAO weather station and date, formatted for Kalshi and Polymarket temperature market resolution.
Price / call$0.01
Success—
StatusUnknown
How this service works
Paid calls cost 0.01-0.02 USDC on eip155:8453 via x402 (exact scheme). Free: /stations, /preview/*, /health, /, /openapi.json, /llms.txt, /.well-known/x402.
Output
A JSON object containing the date, ICAO station ID, Kalshi-specific fields (final max/min °F with timestamps, CLI code, settlement status, preliminary readings), and a METAR climate day best-estimate for max and min temperature in both Celsius and Fahrenheit (rounded and raw).
Example use cases
Resolve Kalshi NYC temperature market
“What were the official high and low temperatures at KNYC for 2025-06-15? I need the Kalshi settlement figures to know if my temperature market position pays out.”
Verify Polymarket temperature threshold
“Did KORD hit a high of at least 90°F on 2025-07-04? I need the official settlement data to verify whether the Polymarket temperature contract resolved yes.”
Auto-settle prediction market bot
“Fetch the final settlement temperatures for station KBOS for 2025-05-10 — I need the min and max °F that Kalshi used, including the CLI code and issue timestamp, so my bot can auto-resolve positions.”
Technical details
Endpoint
GEThttps://weather-x402.linholiday.workers.dev/settlement?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need official, Kalshi- or Polymarket-compatible temperature settlement values (high/low °F) for a specific NOAA/NWS weather station and date. It is purpose-built for prediction market resolution workflows and provides the exact CLI codes and METAR estimates those platforms use. Prefer this over generic weather APIs when you need settlement-grade, authoritative data tied to specific ICAO stations rather than approximate forecasts or consumer weather data.
Side effects
- Missing or invalid 'station' query parameter returns a validation error
- Date older than 6 days may not be available and returns an error or empty result
- Station ICAO ID not found in the system returns a 404 or empty response
- Payment not provided or insufficient (x402 payment required for non-free endpoints) results in a 402 response
- Data not yet available for recent dates (e.g. today's final CLI report not yet issued) may return preliminary-only data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"date": "2026-10-20",
"kalshi": {
"final": {
"max_f": 67,
"min_f": 50,
"issued": "2026-10-21T06:27:00+00:00",
"max_time": "312 PM LST",
"min_time": "302 AM LST"
},
"status": "final",
"cli_code": "CLINYC",
"later_reports": [],
"latest_preliminary": {
"max_f": 67,
"min_f": 50,
"valid_as_of": "0400 PM local"
}
},
"station": "KNYC",
"metar_climate_day": {
"best_estimate": {
"max": {
"c": 19.4,
"f": 66.9,
"f_whole": 67
},
"min": {
"c": 10,
"f": 50,
"f_whole": 50
}
}
}
}
}Tags
x402
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