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WSS
/
Messages
apiKey
type:apiKey

API key authentication required for margin WebSocket connections.

Ping
type:string

Client sends Ping frame (0x9) to elicit Pong from Kalshi

Pong
type:string

Client replies to Ping with Pong Frame (0xA)

Ping
type:string

Kalshi sends Ping (0x9) with body 'heartbeat' to elicit Pong from client

Pong
type:string

Kalshi responds to client Ping with Pong frame (0xA)