Oddpool

aid: oddpool
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/oddpool.png
name: Oddpool
description: Oddpool is an institutional-grade data platform for prediction markets, offering unified access to market data
  across Kalshi and Polymarket through a single REST API and WebSocket feed. It describes itself as "the search engine for
  prediction markets," normalizing hundreds of thousands of markets into a common model so quant funds, trading desks, and
  prosumer traders can search markets and events, pull tick-level historical orderbooks and OHLCV bars, track whale trades,
  detect cross-venue arbitrage, and stream real-time cross-venue probability distributions, orderbooks, and trades. Data is
  addressed by what (event and outcome keys) rather than by venue-specific tickers. A separate enterprise Reference Data API
  provides canonical cross-venue identifiers, fungibility classification, and a Wikidata cross-walk for institutional clients.
url: https://raw.githubusercontent.com/api-evangelist/oddpool/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Prediction Markets
- Market Data
- Financial Data
- Trading
- Fintech
- Data Aggregation
- WebSocket
- Historical Data
- Kalshi
- Polymarket
apis:
- name: Oddpool API
  description: 'REST API for prediction market data across Kalshi and Polymarket: full-text search over markets, events, and
    series; historical orderbook snapshots, top-of-book timeseries, trades, and OHLCV bars; whale-trade tracking; and cross-venue
    arbitrage and price-spread detection. Authenticated with an X-API-Key header and gated by subscription tier.'
  humanURL: https://docs.oddpool.com
  baseURL: https://api.oddpool.com
  tags:
  - Prediction Markets
  - Market Data
  - Historical Data
  - Arbitrage
  properties:
  - type: Documentation
    url: https://docs.oddpool.com
  - type: APIReference
    url: https://docs.oddpool.com/llms.txt
  - type: GettingStarted
    url: https://docs.oddpool.com/index.md
  - type: Authentication
    url: authentication/oddpool-authentication.yml
  - type: RateLimits
    url: https://docs.oddpool.com/rate-limits.md
  - type: ErrorCatalog
    url: errors/oddpool-problem-types.yml
  - type: Conventions
    url: conventions/oddpool-conventions.yml
  - type: DataModel
    url: data-model/oddpool-data-model.yml
  - type: MCPServer
    url: mcp/oddpool-mcp.yml
- name: Oddpool WebSocket Feeds
  description: Single-connection WebSocket streaming real-time, normalized cross-venue prediction market data (dist, book,
    trade, and snapshot channels) for macro economic events and crypto (BTC/ETH) markets enriched with Binance spot/futures
    reference data. Authenticated with an in-band auth message.
  humanURL: https://docs.oddpool.com/websocket/overview.md
  baseURL: wss://feeds.oddpool.com/ws
  tags:
  - WebSocket
  - Streaming
  - Real-Time
  tags_raw:
  - WebSocket
  - Streaming
  - Real-time
  properties:
  - type: AsyncAPI
    url: asyncapi/oddpool-feeds-asyncapi.yml
  - type: Webhooks
    url: asyncapi/oddpool-feeds-asyncapi.yml
  - type: Documentation
    url: https://docs.oddpool.com/websocket/overview.md
common:
- type: Website
  url: https://www.oddpool.com
- type: DeveloperPortal
  url: https://docs.oddpool.com
- type: Documentation
  url: https://docs.oddpool.com
- type: APIReference
  url: https://docs.oddpool.com/llms.txt
- type: GettingStarted
  url: https://docs.oddpool.com/index.md
- type: Pricing
  url: https://oddpool.com/pricing
- type: SignUp
  url: https://oddpool.com/sign-in
- type: TermsOfService
  url: https://oddpool.com/terms
- type: PrivacyPolicy
  url: https://oddpool.com/privacy
- type: Support
  url: https://cal.com/team/oddpool/30-minute-meeting
- type: LLMsTxt
  url: llms/oddpool-llms.txt
- type: Authentication
  url: authentication/oddpool-authentication.yml
- type: Conventions
  url: conventions/oddpool-conventions.yml
- type: ErrorCatalog
  url: errors/oddpool-problem-types.yml
- type: DataModel
  url: data-model/oddpool-data-model.yml
- type: Conformance
  url: conformance/oddpool-conformance.yml
- type: Lifecycle
  url: lifecycle/oddpool-lifecycle.yml
- type: MCPServer
  url: mcp/oddpool-mcp.yml
- type: AsyncAPI
  url: asyncapi/oddpool-feeds-asyncapi.yml
- type: Webhooks
  url: asyncapi/oddpool-feeds-asyncapi.yml
- type: DomainSecurity
  url: security/oddpool-domain-security.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 10
  pass: local-v1