Polygon.io

aid: polygon-io
url: https://raw.githubusercontent.com/api-evangelist/polygon-io/refs/heads/main/apis.yml
name: Polygon.io
x-type: company
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
  - Fintech
  - Market Data
  - Stocks
  - Options
  - Forex
  - Crypto
  - Indices
  - Futures
  - WebSockets
  - Real-time
  - Historical
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.19'
description: >-
  Polygon.io (rebranded as Massive in early 2026) provides real-time and
  historical market data APIs across stocks, options, indices, forex, crypto,
  and futures via REST, WebSocket streaming, and S3-style flat files. APIs
  cover trades, quotes, aggregates, snapshots, ticker reference data, and
  corporate actions.
apis:
  - aid: polygon-io:stocks-api
    name: Polygon.io Stocks API
    tags:
      - Stocks
      - Equities
      - Market Data
      - Real-time
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    baseURL: https://api.polygon.io
    humanURL: https://polygon.io/docs/stocks
    description: >-
      Real-time and historical US equity market data including aggregates
      (minute/hour/day bars), trades, NBBO quotes, snapshots, ticker reference,
      splits, dividends, and financials. Available via REST and WebSocket.
    properties:
      - type: Documentation
        url: https://polygon.io/docs/stocks
    x-features:
      - Real-time and historical aggregates
      - NBBO trades and quotes
      - Snapshots and ticker reference
      - Corporate actions
      - WebSocket streaming
    x-use-cases:
      - Power equity charts and tickers
      - Backtest strategies on historical bars
      - Stream live trades into surveillance systems
  - aid: polygon-io:options-api
    name: Polygon.io Options API
    tags:
      - Options
      - OPRA
      - Market Data
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    baseURL: https://api.polygon.io
    humanURL: https://polygon.io/docs/options
    description: >-
      OPRA-licensed options market data via REST and WebSocket: aggregates,
      trades, quotes, snapshots, contract reference, and option chains.
    properties:
      - type: Documentation
        url: https://polygon.io/docs/options
    x-features:
      - OPRA-licensed options data
      - Snapshot and chain endpoints
      - Greeks and IV (paid tiers)
      - WebSocket streaming
    x-use-cases:
      - Options trading research
      - Volatility surface modeling
      - Greeks dashboards
  - aid: polygon-io:indices-api
    name: Polygon.io Indices API
    tags:
      - Indices
      - Market Data
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    baseURL: https://api.polygon.io
    humanURL: https://polygon.io/docs/indices
    description: Real-time and historical index values for major US and global indices via REST and WebSocket.
    properties:
      - type: Documentation
        url: https://polygon.io/docs/indices
    x-features:
      - Index values and aggregates
      - Snapshots
      - WebSocket streaming
    x-use-cases:
      - Benchmark performance tracking
      - Index-based product pricing
  - aid: polygon-io:forex-api
    name: Polygon.io Forex API
    tags:
      - Forex
      - FX
      - Currencies
      - Market Data
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    baseURL: https://api.polygon.io
    humanURL: https://polygon.io/docs/forex
    description: Real-time and historical FX prices for 1,000+ currency pairs via REST and WebSocket.
    properties:
      - type: Documentation
        url: https://polygon.io/docs/forex
    x-features:
      - 1,000+ currency pairs
      - Aggregates and quotes
      - WebSocket streaming
    x-use-cases:
      - Multi-currency reporting
      - FX trading strategies
  - aid: polygon-io:crypto-api
    name: Polygon.io Crypto API
    tags:
      - Crypto
      - Cryptocurrency
      - Market Data
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    baseURL: https://api.polygon.io
    humanURL: https://polygon.io/docs/crypto
    description: Aggregates, trades, snapshots, level-2 books, and L2 streaming for crypto pairs across major exchanges.
    properties:
      - type: Documentation
        url: https://polygon.io/docs/crypto
    x-features:
      - Aggregated cross-exchange data
      - Level-2 order books
      - WebSocket streaming
    x-use-cases:
      - Crypto trading and analytics
      - Cross-exchange arbitrage research
  - aid: polygon-io:futures-api
    name: Polygon.io Futures API
    tags:
      - Futures
      - Market Data
    image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    baseURL: https://api.polygon.io
    humanURL: https://polygon.io/docs/futures
    description: Real-time and historical futures market data including aggregates, trades, quotes, and snapshots.
    properties:
      - type: Documentation
        url: https://polygon.io/docs/futures
    x-features:
      - CME-licensed futures data
      - Aggregates and snapshots
      - Continuous contracts
    x-use-cases:
      - Futures trading research
      - Commodities and rates analytics
common:
  - type: Portal
    url: https://polygon.io/
  - type: Documentation
    url: https://polygon.io/docs
  - type: Pricing
    url: https://polygon.io/pricing
  - type: Status
    url: https://status.polygon.io/
  - type: GitHub
    url: https://github.com/polygon-io
  - type: Plans
    url: plans/polygon-io-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/polygon-io-rate-limits.yml
  - type: FinOps
    url: finops/polygon-io-finops.yml
maintainers:
  - FN: Kin Lane
    email: [email protected]