aid: kalshi
url: https://raw.githubusercontent.com/api-evangelist/kalshi/refs/heads/main/apis.yml
name: Kalshi
kind: company
description: >-
  Kalshi is a CFTC-regulated US exchange for binary event contracts on
  real-world outcomes - elections, economics, weather, sports, and more. The
  platform exposes a public REST trading API and WebSocket streams for market
  data, orders, positions, and portfolio actions, with a published OpenAPI 3
  specification and AsyncAPI definition for the streaming surface. A demo
  environment mirrors production for safe development. Official Python and
  community SDKs are provided.
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/kalshi.png
tags:
  - Prediction Markets
  - Event Contracts
  - Exchange
  - CFTC
  - Trading
  - Markets
created: '2026-05-23'
modified: '2026-05-29'
specificationVersion: '0.19'
apis:
- aid: kalshi:trade-api-demo
  name: Kalshi Trade API (Demo)
  description: >-
    Demo / sandbox environment for the Kalshi Trade API - mirrors production semantics with simulated
    balances and markets for safe development and automated testing.
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://demo-api.kalshi.co/trade-api/v2
  tags:
  - REST
  - Demo
  - Sandbox
  - Testing
  properties:
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:websocket
  name: Kalshi WebSocket Streaming API
  description: >-
    Real-time streaming feed for market data, order book updates, fills, and portfolio events on Kalshi.
    Documented as an AsyncAPI spec alongside the OpenAPI REST surface.
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: wss://api.elections.kalshi.com/trade-api/ws/v2
  tags:
  - WebSocket
  - Streaming
  - Market Data
  properties:
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
  - type: AsyncAPI
    url: https://docs.kalshi.com/asyncapi.yaml
  - type: AsyncAPI
    url: >-
      https://raw.githubusercontent.com/api-evangelist/kalshi/refs/heads/main/asyncapi/kalshi-asyncapi.yml
- aid: kalshi:asyncapi
  name: Kalshi AsyncAPI Specification
  description: >-
    Machine-readable AsyncAPI description of the Kalshi WebSocket streaming API. Suitable for generating
    async clients and documenting message schemas.
  humanURL: https://docs.kalshi.com/
  baseURL: https://docs.kalshi.com/asyncapi.yaml
  tags:
  - AsyncAPI
  - Specification
  - WebSocket
  properties:
  - type: AsyncAPI
    url: https://docs.kalshi.com/asyncapi.yaml
- aid: kalshi:python-starter
  name: Kalshi Python Starter Kit
  description: >-
    Official Python starter / SDK published by Kalshi for connecting to the Trade REST API and WebSocket
    streams. Includes request signing, authentication helpers, and example trading flows.
  humanURL: https://github.com/Kalshi/kalshi-starter-code-python
  baseURL: https://github.com/Kalshi/kalshi-starter-code-python
  tags:
  - SDK
  - Python
  - Starter
  properties:
  - type: Repository
    url: https://github.com/Kalshi/kalshi-starter-code-python
- aid: kalshi:kalshi-account-api
  name: Kalshi account API
  description: The account API from Kalshi — 2 operation(s) for account.
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - account
  properties:
  - type: OpenAPI
    url: openapi/kalshi-account-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-api-keys-api
  name: Kalshi api-keys API
  description: API key management endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - api-keys
  properties:
  - type: OpenAPI
    url: openapi/kalshi-api-keys-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-communications-api
  name: Kalshi communications API
  description: Request-for-quote (RFQ) endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - communications
  properties:
  - type: OpenAPI
    url: openapi/kalshi-communications-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-events-api
  name: Kalshi events API
  description: Event endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - events
  properties:
  - type: OpenAPI
    url: openapi/kalshi-events-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-exchange-api
  name: Kalshi exchange API
  description: Exchange status and information endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - exchange
  properties:
  - type: OpenAPI
    url: openapi/kalshi-exchange-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-fcm-api
  name: Kalshi fcm API
  description: FCM member specific endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - fcm
  properties:
  - type: OpenAPI
    url: openapi/kalshi-fcm-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-historical-api
  name: Kalshi historical API
  description: The historical API from Kalshi — 7 operation(s) for historical.
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - historical
  properties:
  - type: OpenAPI
    url: openapi/kalshi-historical-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-incentive-programs-api
  name: Kalshi incentive-programs API
  description: Incentive program endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - incentive-programs
  properties:
  - type: OpenAPI
    url: openapi/kalshi-incentive-programs-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-live-data-api
  name: Kalshi live-data API
  description: Live data endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - live-data
  properties:
  - type: OpenAPI
    url: openapi/kalshi-live-data-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-market-api
  name: Kalshi market API
  description: The market API from Kalshi — 9 operation(s) for market.
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - market
  properties:
  - type: OpenAPI
    url: openapi/kalshi-market-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-milestone-api
  name: Kalshi milestone API
  description: Milestone endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - milestone
  properties:
  - type: OpenAPI
    url: openapi/kalshi-milestone-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-multivariate-api
  name: Kalshi multivariate API
  description: Multivariate event collection endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - multivariate
  properties:
  - type: OpenAPI
    url: openapi/kalshi-multivariate-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-order-groups-api
  name: Kalshi order-groups API
  description: Order group management endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - order-groups
  properties:
  - type: OpenAPI
    url: openapi/kalshi-order-groups-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-orders-api
  name: Kalshi orders API
  description: Order management endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - orders
  properties:
  - type: OpenAPI
    url: openapi/kalshi-orders-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-portfolio-api
  name: Kalshi portfolio API
  description: Portfolio and balance information endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - portfolio
  properties:
  - type: OpenAPI
    url: openapi/kalshi-portfolio-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-search-api
  name: Kalshi search API
  description: Search and filtering endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - search
  properties:
  - type: OpenAPI
    url: openapi/kalshi-search-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
- aid: kalshi:kalshi-structured-targets-api
  name: Kalshi structured-targets API
  description: Structured targets endpoints
  humanURL: https://docs.kalshi.com/api-reference
  baseURL: https://api.elections.kalshi.com/trade-api/v2
  tags:
  - structured-targets
  properties:
  - type: OpenAPI
    url: openapi/kalshi-structured-targets-api-openapi.yml
  - type: Documentation
    url: https://docs.kalshi.com/api-reference
common:
  - type: AgenticAccess
    url: agentic-access/kalshi-agentic-access.yml
  - type: DomainSecurity
    url: security/kalshi-domain-security.yml
  - type: Authentication
    url: authentication/kalshi-authentication.yml
  - type: Website
    url: https://kalshi.com/
  - type: Documentation
    url: https://docs.kalshi.com/
  - type: APIReference
    url: https://docs.kalshi.com/api-reference
  - type: Help
    url: https://help.kalshi.com/
  - type: GitHub
    url: https://github.com/Kalshi
  - type: Developer Agreement
    url: https://kalshi.com/developer-agreement
  - type: LinkedIn
    url: https://www.linkedin.com/company/kalshi/
  - type: LlmsText
    url: https://docs.kalshi.com/llms.txt
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com