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About Our mission

Market data for
Kalshi and Polymarket.

Kalshi NHIGH/NLOW resolvers, Polymarket discovery + settlement, and Kalshi + Polymarket trade history: every contract mapped to the exact station and value it settles on.

settle.py
1from mostlyright.markets.catalog import kalshi_nhigh
2
3c = kalshi_nhigh.resolve("KHIGHNYC", date(2025,1,6))
4# c.settlement_station -> "KNYC"
1import { kalshiSettlementFor } from "@mostlyrightmd/markets";
2
3const r = kalshiSettlementFor("KHIGHNYC", "2025-01-06");
4// { settlementStation: "KNYC", cityTicker: "NYC", ... }
Kalshi

NHIGH / NLOW weather-contract resolvers map a ticker to its CLI settlement source + station. Plus full trade history.

NHIGH · NLOW CLI-settled
Polymarket

Discover active weather events, parse the resolution station from the description, and settle against international daily extremes, with QC alerts.

discover · settle 49+ intl cities
// how it settles

From ticker to decision, deterministically

See all resolvers →

01
Parse

Gate on the URL slug / ticker for a covered daily-extreme weather market.

02
Map station

Resolve the contract to its settlement ICAO from the event description or catalog.

03
Pull data

Fetch that station's observed extreme for the settlement window, in its native unit.

04
Decide

Apply the threshold and emit a settlement with a QC alert if the data is suspect.

polymarketSettle(event) →
{
  eventId: "highest-temperature-in-london-on-…",
  icao: "EGLC", measure: "high",
  resolvedValueC: 30, resolvedValueF: 86,
  unit: "celsius", resolutionSourceType: "noaa_wrh",
  dataQualityAlert: null
}
// coverage

49+ international cities, mapped

See the full registry →

London EGLC
New York KLGA
Paris LFPG
Tokyo RJTT
Seoul RKSI
Singapore WSSS
Moscow UUWW
Sydney-area +42
Hong Kong HKO
// prediction markets · live

Settle weather contracts on data you can audit.

Read the docs
// request access

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