Kalshi
Markets
CFTC-regulated event contract exchange with a documented REST and WebSocket API for algorithmic trading
OpenAPI
API keyper-transaction
A directory of services AI agents can actually use — APIs, tools and merchants with machine-readable interfaces and agent payment protocols. Badges are probe-backed, never self-asserted.
Markets·Exchanges, brokerages, prediction and betting markets
Markets
CFTC-regulated event contract exchange with a documented REST and WebSocket API for algorithmic trading
Same query as JSON: /api/v1/services?category=markets