Individual skill

kalshi-api

Kalshi exchange mechanics — RSA-PSS auth, order schema, YES/NO orderbook convention, WebSocket, and endpoint surface. Market-type-agnostic shared layer for all Kalshi skills.

skills/kalshi-api/SKILL.md

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Last checked: Nov 10, 2026

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Repository stars (not skill ratings): 519
Repository last updated: Sep 3, 2026
License: MIT

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SKILL.mdcore · 8,093 bytes
SKILL.mdcore · 8,093 bytes
SKILL.mdcore · 8,093 bytes
references/auth-and-orders.mddoc · 4,937 bytes
references/endpoints-and-marketdata.mddoc · 5,267 bytes
references/websocket.mddoc · 2,917 bytes
scripts/kalshi_orderbook.pyruns · 4,711 bytes

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# Kalshi API

CFTC-regulated US event exchange. USD-denominated binary contracts settle at $1.00 (YES wins) or $0.00 (NO wins). REST + WebSocket, RSA-PSS authentication on every request.

For contract semantics and settlement rules, see the `kalshi-weather-markets` and `kalshi-crypto-index-markets` skills. For strategy, sizing, and backtesting, see `prediction-market-strategy`.

---

> **VERIFY BEFORE CODING.**
> The Kalshi API has broken backward compatibility before: the host changed (old `trading-api.kalshi.com` → dead), and the order schema changed (integer cents → dollar strings). Always smoke-test signing and order bodies against a live response before shipping.
>
> Canonical sources:
> - API reference: <https://docs.kalshi.com> (legacy mirror: <https://trading-api.readme.io>)
> - Official Python starter: <https://github.com/Kalshi/kalshi-starter-code-python>