Polygon

Polygon (Polygon.io, rebranded as Massive in early 2026) provides real-time and historical market data APIs across US stocks, options, indices, forex, cryptocurrencies, and futures. Coverage is delivered through REST endpoints and WebSocket streams under a single api.polygon.io surface plus an S3 flat files product, with tiered subscription plans for retail developers and Business contracts for redistribution and exchange-licensed data.

7 APIs 5 Features

FinanceFintechMarket DataStocksOptionsForexCryptoIndicesFuturesWebSocketsReal-timeHistoricalPublic APIs

APIs

Polygon Stocks API

Real-time and historical US equity market data including aggregate (OHLC) bars at minute/hour/day granularity, trades, NBBO quotes, snapshots, ticker reference, splits, dividend...

Polygon Options API

OPRA-licensed options market data via REST and WebSocket: aggregates, trades, quotes, snapshots, contract reference, and option chains. Greeks and implied volatility are availab...

Polygon Indices API

Real-time and historical index values for major US and global indices via REST and WebSocket. Includes aggregates, snapshots, and index reference data.

Polygon Forex API

Real-time and historical FX prices for 1,000+ currency pairs via REST and WebSocket. Covers aggregates, quotes, snapshots, conversions, and previous-close.

Polygon Crypto API

Aggregates, trades, snapshots, and level-2 order books for crypto pairs sourced across major exchanges, plus WebSocket streaming on the crypto cluster.

Polygon Reference API

Reference data covering tickers, ticker types, markets, exchanges, market holidays, market status, conditions, stock splits, dividends, and ticker news. Shared across all asset ...

Polygon WebSocket API

Real-time streaming WebSocket clusters per asset class (stocks/options/indices/forex/crypto). Subscribers authenticate with an API key and subscribe to channels for trades, quot...

Collections

Polygon Crypto REST API

POSTMAN

Polygon Forex REST API

POSTMAN

Polygon Indices REST API

POSTMAN

Polygon Options REST API

POSTMAN

Polygon Reference REST API

POSTMAN

Polygon Stocks REST API

POSTMAN

Polygon Crypto REST API

OPEN

Polygon Forex REST API

OPEN

Polygon Indices REST API

OPEN

Polygon Options REST API

OPEN

Polygon Reference REST API

OPEN

Polygon Stocks REST API

OPEN

Arazzo Workflows

Polygon Corporate Actions Review

Resolve a ticker, then list its stock splits and dividends history.

ARAZZO

Polygon Crypto Daily Comparison

Check market status, snapshot a crypto pair, and read its daily open/close.

ARAZZO

Polygon Crypto Pair Analysis

Snapshot a crypto pair, pull its aggregate bars, and read its Level-2 order book.

ARAZZO

Polygon Forex Pair Analysis

Read a currency pair's last quote, convert an amount, and pull its aggregate bars.

ARAZZO

Polygon Grouped Market Scan

Check market status, pull grouped daily bars for all US stocks, and profile one symbol.

ARAZZO

Polygon Index Analysis

Snapshot an index, pull its aggregate bars, and read its previous close.

ARAZZO

Polygon Market-Gated Stock Daily Snapshot

Check current US market status, then pull a stock's daily open/close and previous close.

ARAZZO

Polygon Options Chain Scan

Resolve an underlying's details, scan its options chain, and read its previous close.

ARAZZO

Polygon Options Contract Deep Dive

List an underlying's option contracts, snapshot the top contract, and pull its bars.

ARAZZO

Polygon Stock Research

Resolve a stock ticker's reference details, pull its aggregate bars, and read its previous close.

ARAZZO

Polygon Ticker Discovery and Profile

Search active stock tickers, resolve the top match's details, and pull its recent bars.

ARAZZO

Polygon Ticker News Context

Resolve a ticker's details, pull recent news, and read its previous close.

ARAZZO

Pricing Plans

Polygon Plans Pricing

12 plans

PLANS

Rate Limits

Polygon Rate Limits

6 limits

RATE LIMITS

FinOps

Polygon Finops

FINOPS

Features

Multi-asset market data

Unified REST and WebSocket surface for stocks, options, indices, forex, crypto, and futures.

Real-time and historical

Sub-second live feeds plus 20+ years of historical aggregates depending on tier.

WebSocket clusters per asset class

Dedicated streaming clusters for stocks, options, indices, forex, and crypto subscriptions.

Flat files

S3-style daily aggregate, trade, and quote files for bulk historical loads on paid tiers.

Tiered subscriptions

Basic / Starter / Developer / Advanced / Business plans per asset class with distinct rate limits.

Use Cases

Trading platform price feeds

Power retail and institutional trading UIs with consolidated real-time quotes and bars.

Backtesting and research

Pull decades of aggregated bars and tick data for systematic strategy research.

Risk and surveillance

Stream live trades and quotes into compliance, surveillance, and risk engines.

Analytics dashboards

Build market dashboards, terminals, and embedded charts across asset classes.

Quant pipelines

Drive options Greeks, volatility surfaces, and FX hedging models with reliable feeds.

Integrations

TradingView

Polygon data feeds integrate with charting libraries used by trading apps.

Pandas and DataFrames

Python SDK returns DataFrames for direct use in research notebooks.

Snowflake and Databricks

Flat files load into modern data warehouses for SQL-based market analytics.

Kafka and streaming platforms

WebSocket feeds bridge into Kafka, Redpanda, and Kinesis for downstream processing.

Solutions

Retail brokerages and fintech apps

Tiered plans for consumer-facing investing apps and personal-finance tools.

Quant funds and prop trading

Business contracts for redistribution and full SIP / OPRA / CME exchange-licensed data.

Data and AI research

Flat files and historical APIs for ML feature engineering and financial NLP.

Event Specifications

Polygon WebSocket Streaming API

Polygon real-time market data WebSocket clusters. Each asset class (stocks, options, indices, forex, crypto) has its own dedicated cluster at `wss://socket.polygon.io/{cluster}`...

ASYNCAPI

Semantic Vocabularies

Polygon Context

10 classes · 40 properties

JSON-LD

API Governance Rules

Polygon API Rules

21 rules · 4 errors 13 warnings 4 info

SPECTRAL

JSON Structure

Polygon Aggregate Bar Structure

9 properties

JSON STRUCTURE

Polygon Options Contract Structure

9 properties

JSON STRUCTURE

Polygon Ticker Structure

12 properties

JSON STRUCTURE

Example Payloads

Polygon Forex Conversion Example

2 fields

EXAMPLE

Polygon Options Chain Snapshot Example

2 fields

EXAMPLE

Polygon Reference Tickers Example

2 fields

EXAMPLE

Polygon Stocks Aggregate Bars Example

2 fields

EXAMPLE

Polygon Websocket Subscribe Example

3 fields

EXAMPLE

Resources

PostmanWorkspace

PostmanWorkspace

Documentation

APIReference

GettingStarted

TermsOfService

PrivacyPolicy

GitHubOrganization

GitHubOrganization

Official Polygon (Massive) MCP Server

Official PHP SDK

JavaScript / TypeScript SDK

Kotlin / JVM SDK

SpectralRules

Sources

opencollection: 1.0.0
info:
  name: Polygon Stocks REST API
  version: '1.0'
request:
  auth:
    type: apikey
    key: apiKey
    value: '{{apiKey}}'
    placement: query
items:
- info:
    name: Aggregates
    type: folder
  items:
  - info:
      name: Get Aggregate Bars For A Stock Ticker
      type: http
    http:
      method: GET
      url: https://api.polygon.io/v2/aggs/ticker/:stocksTicker/range/:multiplier/:timespan/:from/:to
      params:
      - name: stocksTicker
        value: ''
        type: path
        description: Case-sensitive stock ticker symbol (e.g., AAPL).
      - name: multiplier
        value: ''
        type: path
        description: Size of the timespan multiplier.
      - name: timespan
        value: ''
        type: path
      - name: from
        value: ''
        type: path
        description: Start of the aggregate window (YYYY-MM-DD or millisecond timestamp).
      - name: to
        value: ''
        type: path
        description: End of the aggregate window (YYYY-MM-DD or millisecond timestamp).
      - name: adjusted
        value: ''
        type: query
      - name: sort
        value: ''
        type: query
      - name: limit
        value: ''
        type: query
    docs: 'Returns aggregate bars for a stock over a given date range in

      custom time window sizes (e.g., 5-minute bars between two dates).

      '
- info:
    name: DailyBars
    type: folder
  items:
  - info:
      name: Get Daily Open Close For A Stock Ticker
      type: http
    http:
      method: GET
      url: https://api.polygon.io/v1/open-close/:stocksTicker/:date
      params:
      - name: stocksTicker
        value: ''
        type: path
      - name: date
        value: ''
        type: path
      - name: adjusted
        value: ''
        type: query
    docs: Returns the open, close, high, and low for a stock ticker on a specific date.
  - info:
      name: Get Grouped Daily Bars For US Stocks
      type: http
    http:
      method: GET
      url: https://api.polygon.io/v2/aggs/grouped/locale/us/market/stocks/:date
      params:
      - name: date
        value: ''
        type: path
      - name: adjusted
        value: ''
        type: query
      - name: include_otc
        value: ''
        type: query
    docs: Returns daily aggregate bars for all US stock tickers on a specific date.
  - info:
      name: Get Previous Close For A Stock Ticker
      type: http
    http:
      method: GET
      url: https://api.polygon.io/v2/aggs/ticker/:stocksTicker/prev
      params:
      - name: stocksTicker
        value: ''
        type: path
      - name: adjusted
        value: ''
        type: query
    docs: Returns the previous trading day's open, close, high, and low for a stock ticker.
bundled: true