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Kalshi

Kalshi multivariate API

Multivariate event collection endpoints

Documentation Provider Profile APIs.io OpenAPI GitHub

Kalshi multivariate API is one of 21 APIs that Kalshi publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Multivariate. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 5 operations across 3 paths, and defines 18 schemas. It is described by OpenAPI 3.2.0, 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.

5 operations 3 paths 18 schemas 3 GET1 POST1 PUT

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
3.19.0
Base URL
https://api.elections.kalshi.com/trade-api/v2
Authentication
API Key, API Key, API Key
Resource Areas
1

Authentication & Security 3

Kalshi multivariate 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 ID
  • kalshiAccessSignature — RSA-PSS signature of the request
  • kalshiAccessTimestamp — Request timestamp in milliseconds

Paths & Operations 5

Across 3 paths, the API surfaces 5 operations — 3 GET, 1 POST, 1 PUT. Each is listed below with its method, path, parameters, and response codes.

multivariate 5

Multivariate event collection endpoints

GET
/multivariate_event_collections/{collection_ticker}
Get Multivariate Event Collection
GetMultivariateEventCollection 1 param → 200400404500
POST
/multivariate_event_collections/{collection_ticker}
Create Market In Multivariate Event Collection
CreateMarketInMultivariateEventCollection 1 param body → 200400401429500
GET
/multivariate_event_collections
Get Multivariate Event Collections
GetMultivariateEventCollections 5 params → 200400500
PUT
/multivariate_event_collections/{collection_ticker}/lookupdeprecated
Lookup Tickers For Market In Multivariate Event Collection
LookupTickersForMarketInMultivariateEventCollection 1 param body → 200400401404500
GET
/multivariate_event_collections/{collection_ticker}/lookupdeprecated
Get Multivariate Event Collection Lookup History
GetMultivariateEventCollectionLookupHistory 2 params → 200400500

Schemas 18

The contract defines 18 schemas that model the data the API accepts and returns. The most detailed are Market (55 properties), MultivariateEventCollection (14 properties), AssociatedEvent (5 properties), ErrorResponse (4 properties). Each schema is shown below with its type and property counts.

Market
object
55 properties 35 required
FixedPointDollars
string
US dollar amount as a fixed-point decimal string with up to 6 decimal places of precision. This is the maximum supported precision; valid quote intervals for a…
CreateMarketInMultivariateEventCollectionResponse
object
3 properties 2 required
LookupTickersForMarketInMultivariateEventCollectionResponse
object
2 properties 2 required
ErrorResponse
object
4 properties
GetMultivariateEventCollectionsResponse
object
2 properties 1 required
AssociatedEvent
object
5 properties 3 required
TickerPair
object
3 properties 3 required
FixedPointCount
string
Fixed-point contract count string (2 decimals, e.g., "10.00"; referred to as "fp" in field names). Requests accept 0–2 decimal places (e.g., "10", "10.0", "10.…
LookupTickersForMarketInMultivariateEventCollectionRequest
object
1 property 1 required
MultivariateEventCollection
object
14 properties 14 required
LookupPoint
object
4 properties 4 required
GetMultivariateEventCollectionResponse
object
1 property 1 required
CreateMarketInMultivariateEventCollectionRequest
object
2 properties 1 required
ExchangeIndex
integer
Identifier for an exchange shard. Defaults to 0 if unspecified. Note: currently only 0 supported.
MveSelectedLeg
object
4 properties
GetMultivariateEventCollectionLookupHistoryResponse
object
1 property 1 required
PriceRange
object
3 properties 3 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

kalshi-multivariate-api-openapi.yml Raw ↑

Other APIs Kalshi publishes across the network.

Kalshi Trade API (Demo)
AE Profile APIs.io
Kalshi WebSocket Streaming API
AE Profile APIs.io
Kalshi AsyncAPI Specification
AE Profile APIs.io
Kalshi Python Starter Kit
AE Profile APIs.io
Kalshi account API
AE Profile APIs.io
Kalshi api-keys API
AE Profile APIs.io
Kalshi communications API
AE Profile APIs.io
Kalshi events API
AE Profile APIs.io
Kalshi exchange API
AE Profile APIs.io
Kalshi fcm API
AE Profile APIs.io
Kalshi historical API
AE Profile APIs.io
Kalshi incentive-programs API
AE Profile APIs.io
#Multivariate
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API Details
ID
kalshi:kalshi-multivariate-api
Base URL
https://api.elections.kalshi.com/trade-api/v2
Docs
https://docs.kalshi.com/api-reference
Provider
Kalshi
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