Kalshi portfolio API
Portfolio and balance information endpoints
Kalshi portfolio API is one of 21 APIs that Kalshi publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include portfolio. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.
This API exposes 13 operations across 12 paths, and defines 29 schemas. It is described by OpenAPI 3.0.0, at version 3.19.0.
Requests are made against 4 base URLs: https://external-api.kalshi.com/trade-api/v2, https://api.elections.kalshi.com/trade-api/v2, https://external-api.demo.kalshi.co/trade-api/v2, https://demo-api.kalshi.co/trade-api/v2.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 3
Kalshi portfolio API declares
3 security schemes
for authenticating requests.
An API key is passed in the header as KALSHI-ACCESS-KEY (kalshiAccessKey).
An API key is passed in the header as KALSHI-ACCESS-SIGNATURE (kalshiAccessSignature).
An API key is passed in the header as KALSHI-ACCESS-TIMESTAMP (kalshiAccessTimestamp).
kalshiAccessKey— Your API key IDkalshiAccessSignature— RSA-PSS signature of the requestkalshiAccessTimestamp— Request timestamp in milliseconds
Paths & Operations 13
Across 12 paths, the API surfaces 13 operations — 10 GET, 2 POST, 1 PUT. Each is listed below with its method, path, parameters, and response codes.
Portfolio and balance information endpoints
Schemas 29
The contract defines 29 schemas that model the data the API accepts and returns. The most detailed are Fill (17 properties), Settlement (11 properties), MarketPosition (8 properties), Deposit (7 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
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Other APIs Kalshi publishes across the network.