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.
Polygon publishes 71 APIs on the APIs.io network, including WebSocket API, Aggregates API, Books API, and 68 more. Tagged areas include Finance, Fintech, Market Data, Stocks, and Options.
The Polygon catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 3 Spectral governance rulesets.
Polygon’s developer surface includes changelog, authentication, developer portal, documentation, API reference, getting-started guide, signup flow, and 51 more developer resources.
Kin Score
APIs 71
Individual APIs this provider publishes, each with its own machine-readable definition.
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...
Polygon Aggregates API
Crypto aggregate bars.
Polygon Books API
Level-2 order book.
Polygon Contracts API
Option contract reference data.
Polygon Conversion API
Real-time currency conversion.
Polygon CorporateActions API
Stock splits and dividends.
Polygon DailyBars API
Daily open/close.
Polygon Markets API
Markets, exchanges, holidays, and status.
Polygon News API
Ticker news.
Polygon Quotes API
FX quote endpoints.
Polygon Snapshots API
Snapshot endpoints.
Polygon Tickers API
Ticker reference and metadata.
Polygon Benzinga API
The benzinga API from Polygon — 9 operation(s) for benzinga.
Polygon Crypto:aggregates API
The crypto:aggregates API from Polygon — 7 operation(s) for crypto:aggregates.
Polygon Crypto:last:trade API
The crypto:last:trade API from Polygon — 1 operation(s) for crypto:last:trade.
Polygon Crypto:open Close API
The crypto:open-close API from Polygon — 1 operation(s) for crypto:open-close.
Polygon Crypto:snapshot API
The crypto:snapshot API from Polygon — 4 operation(s) for crypto:snapshot.
Polygon Crypto:trades API
The crypto:trades API from Polygon — 2 operation(s) for crypto:trades.
Polygon Etfglobal API
The etfglobal API from Polygon — 5 operation(s) for etfglobal.
Polygon Fable API
The fable API from Polygon — 2 operation(s) for fable.
Polygon Fed API
The fed API from Polygon — 4 operation(s) for fed.
Polygon Financials API
The financials API from Polygon — 4 operation(s) for financials.
Polygon Futures:aggregates API
The futures:aggregates API from Polygon — 1 operation(s) for futures:aggregates.
Polygon Fx:aggregates API
The fx:aggregates API from Polygon — 7 operation(s) for fx:aggregates.
Polygon Fx:conversion API
The fx:conversion API from Polygon — 1 operation(s) for fx:conversion.
Polygon Fx:last:quote API
The fx:last:quote API from Polygon — 1 operation(s) for fx:last:quote.
Polygon Fx:quotes API
The fx:quotes API from Polygon — 1 operation(s) for fx:quotes.
Polygon Fx:snapshot API
The fx:snapshot API from Polygon — 3 operation(s) for fx:snapshot.
Polygon Fx:trades API
The fx:trades API from Polygon — 1 operation(s) for fx:trades.
Polygon Global Crypto API
The global_crypto API from Polygon — 1 operation(s) for global_crypto.
Polygon Global Forex API
The global_forex API from Polygon — 1 operation(s) for global_forex.
Polygon Indices:aggregates API
The indices:aggregates API from Polygon — 6 operation(s) for indices:aggregates.
Polygon Indices:snapshot API
The indices:snapshot API from Polygon — 1 operation(s) for indices:snapshot.
Polygon Options:aggregates API
The options:aggregates API from Polygon — 6 operation(s) for options:aggregates.
Polygon Options:last:trade API
The options:last:trade API from Polygon — 1 operation(s) for options:last:trade.
Polygon Options:open Close API
The options:open-close API from Polygon — 1 operation(s) for options:open-close.
Polygon Options:quotes API
The options:quotes API from Polygon — 1 operation(s) for options:quotes.
Polygon Options:snapshot API
The options:snapshot API from Polygon — 2 operation(s) for options:snapshot.
Polygon Options:trades API
The options:trades API from Polygon — 1 operation(s) for options:trades.
Polygon Reference API
Reference API
Polygon Reference:conditions API
The reference:conditions API from Polygon — 1 operation(s) for reference:conditions.
Polygon Reference:dividends API
The reference:dividends API from Polygon — 1 operation(s) for reference:dividends.
Polygon Reference:exchanges API
The reference:exchanges API from Polygon — 1 operation(s) for reference:exchanges.
Polygon Reference:news API
The reference:news API from Polygon — 1 operation(s) for reference:news.
Polygon Reference:options:contract API
The reference:options:contract API from Polygon — 1 operation(s) for reference:options:contract.
Polygon Reference:options:contracts:list API
The reference:options:contracts:list API from Polygon — 1 operation(s) for reference:options:contracts:list.
Polygon Reference:related:companies API
The reference:related:companies API from Polygon — 1 operation(s) for reference:related:companies.
Polygon Reference:sec:filing API
The reference:sec:filing API from Polygon — 1 operation(s) for reference:sec:filing.
Polygon Reference:sec:filing:file API
The reference:sec:filing:file API from Polygon — 1 operation(s) for reference:sec:filing:file.
Polygon Reference:sec:filing:files API
The reference:sec:filing:files API from Polygon — 1 operation(s) for reference:sec:filing:files.
Polygon Reference:sec:filings API
The reference:sec:filings API from Polygon — 1 operation(s) for reference:sec:filings.
Polygon Reference:stocks API
The reference:stocks API from Polygon — 2 operation(s) for reference:stocks.
Polygon Reference:stocks:ipos API
The reference:stocks:ipos API from Polygon — 1 operation(s) for reference:stocks:ipos.
Polygon Reference:stocks:market API
The reference:stocks:market API from Polygon — 2 operation(s) for reference:stocks:market.
Polygon Reference:tickers:get API
The reference:tickers:get API from Polygon — 2 operation(s) for reference:tickers:get.
Polygon Reference:tickers:list API
The reference:tickers:list API from Polygon — 1 operation(s) for reference:tickers:list.
Polygon Reference:tickers:types API
The reference:tickers:types API from Polygon — 1 operation(s) for reference:tickers:types.
Polygon Snapshot API
The Snapshot API from Polygon — 1 operation(s) for snapshot.
Polygon Stocks:aggregates API
The stocks:aggregates API from Polygon — 7 operation(s) for stocks:aggregates.
Polygon Stocks:last:quote API
The stocks:last:quote API from Polygon — 1 operation(s) for stocks:last:quote.
Polygon Stocks:last:trade API
The stocks:last:trade API from Polygon — 1 operation(s) for stocks:last:trade.
Polygon Stocks:open Close API
The stocks:open-close API from Polygon — 2 operation(s) for stocks:open-close.
Polygon Stocks:quotes API
The stocks:quotes API from Polygon — 2 operation(s) for stocks:quotes.
Polygon Stocks:snapshot API
The stocks:snapshot API from Polygon — 3 operation(s) for stocks:snapshot.
Polygon Stocks:trades API
The stocks:trades API from Polygon — 2 operation(s) for stocks:trades.
Polygon Summaries API
The Summaries API from Polygon — 1 operation(s) for summaries.
Polygon Tmx API
The tmx API from Polygon — 1 operation(s) for tmx.
Polygon Us Futures API
The us_futures API from Polygon — 8 operation(s) for us_futures.
Polygon Us Options API
The us_options API from Polygon — 3 operation(s) for us_options.
Polygon Us Stocks All API
The us_stocks_all API from Polygon — 2 operation(s) for us_stocks_all.
Polygon Us Stocks Reference API
The us_stocks_reference API from Polygon — 3 operation(s) for us_stocks_reference.
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Postman Collections 17
Ready-to-run Postman collections for exercising this provider's APIs.
Polygon Crypto REST API
POSTMANPolygon Forex REST API
POSTMANPolygon Indices REST API
POSTMANPolygon Options REST API
POSTMANPolygon Reference REST API
POSTMANPolygon Stocks REST API
POSTMANScroll for all 17
Open Collections 19
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONPolygon Crypto REST Aggregates API
OPEN COLLECTIONPolygon Crypto REST Aggregates Books API
OPEN COLLECTIONPolygon Crypto REST Aggregates Contracts API
OPEN COLLECTIONPolygon Crypto REST Aggregates Conversion API
OPEN COLLECTIONPolygon Crypto REST Aggregates CorporateActions API
OPEN COLLECTIONPolygon Crypto REST API
OPEN COLLECTIONPolygon Crypto REST Aggregates DailyBars API
OPEN COLLECTIONPolygon Forex REST API
OPEN COLLECTIONPolygon Indices REST API
OPEN COLLECTIONPolygon Crypto REST Aggregates Markets API
OPEN COLLECTIONPolygon Crypto REST Aggregates News API
OPEN COLLECTIONPolygon API
OPEN COLLECTIONPolygon Options REST API
OPEN COLLECTIONPolygon Crypto REST Aggregates Quotes API
OPEN COLLECTIONPolygon Reference REST API
OPEN COLLECTIONPolygon Crypto REST Aggregates Snapshots API
OPEN COLLECTIONPolygon Stocks REST API
OPEN COLLECTIONPolygon Crypto REST Aggregates Tickers API
OPEN COLLECTIONScroll for all 19
Arazzo Workflows 12
Multi-step API workflows described with the Arazzo specification.
Polygon Corporate Actions Review
Resolve a ticker, then list its stock splits and dividends history.
ARAZZOPolygon Crypto Daily Comparison
Check market status, snapshot a crypto pair, and read its daily open/close.
ARAZZOPolygon Crypto Pair Analysis
Snapshot a crypto pair, pull its aggregate bars, and read its Level-2 order book.
ARAZZOPolygon Forex Pair Analysis
Read a currency pair's last quote, convert an amount, and pull its aggregate bars.
ARAZZOPolygon Grouped Market Scan
Check market status, pull grouped daily bars for all US stocks, and profile one symbol.
ARAZZOPolygon Index Analysis
Snapshot an index, pull its aggregate bars, and read its previous close.
ARAZZOPolygon Market-Gated Stock Daily Snapshot
Check current US market status, then pull a stock's daily open/close and previous close.
ARAZZOPolygon Options Chain Scan
Resolve an underlying's details, scan its options chain, and read its previous close.
ARAZZOPolygon Options Contract Deep Dive
List an underlying's option contracts, snapshot the top contract, and pull its bars.
ARAZZOPolygon Stock Research
Resolve a stock ticker's reference details, pull its aggregate bars, and read its previous close.
ARAZZOPolygon Ticker Discovery and Profile
Search active stock tickers, resolve the top match's details, and pull its recent bars.
ARAZZOPolygon Ticker News Context
Resolve a ticker's details, pull recent news, and read its previous close.
ARAZZOScroll for all 12
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Pricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Polygon Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Polygon Finops
FINOPSFeatures 5
Notable capabilities this provider offers.
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.
Event Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
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}`...
ASYNCAPISemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Polygon Context
JSON-LDSpectral Rules 3
Spectral governance rulesets for linting and validating these APIs.
JSON Schema 5
Standalone JSON Schema definitions for this provider's data models.
Polygon Aggregate Bar
JSON SCHEMAPolygon Options Contract
JSON SCHEMAPolygon NBBO Quote Tick
JSON SCHEMAPolygon Ticker
JSON SCHEMAPolygon Trade Tick
JSON SCHEMAJSON Structure 3
JSON Structure definitions describing this provider's data shapes.
Polygon Aggregate Bar Structure
JSON STRUCTUREPolygon Options Contract Structure
JSON STRUCTUREPolygon Ticker Structure
JSON STRUCTUREExamples 5
Example request and response payloads for these APIs.
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Use Cases 5
What developers build with this provider.
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 4
Pre-built integrations with other platforms and tools.
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 3
Packaged solutions this provider offers.
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.
Resources
Get Started 4
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 21
Pagination, idempotency, versioning, errors, and events
Scroll for all 21
Build 10
SDKs, sample code, and the tooling you integrate with
Scroll for all 10
Access & Security 3
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 5
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 1
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.