Massive (formerly Polygon.io)

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.

Massive (formerly Polygon.io) publishes 70 API contracts indexed on the APIs.io network, including Polygon WebSocket API, Polygon.io Stocks API, Polygon.io Options API, and 67 more. Tagged areas include Finance, Fintech, Market Data, Stocks, and Options.

The Massive (formerly Polygon.io) catalog on APIs.io includes 2 event-driven AsyncAPI specifications, 1 JSON-LD context, and 3 Spectral governance rulesets.

Massive (formerly Polygon.io)’s developer surface includes changelog, authentication, developer portal, documentation, API reference, getting-started guide, signup flow, and 52 more developer resources.

🌐 Visit website 📡 Source on GitHub

71.6/100 exemplar ▬ flat Agent 46/100 agent ready saas Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0

AccessFreemiumSelf serve⚡ Free to try

70 published contracts 1 MCP Servers 5 Features 5 Use Cases

Finance Fintech Market Data Stocks Options Forex Crypto Indices Futures WebSocket Real-Time Historical Public APIs Financial Data

What people ask Massive (formerly Polygon.io) 63

The questions people put to an LLM, and the jobs they hand an agent, that Massive (formerly Polygon.io)'s APIs answer — each one linked to the operation that does it. Generated by API Evangelist

Massive (formerly Polygon.io) Reference API Read sections of 10-K filings (vX) “Can I pull the raw text of a specific section, like risk factors or MD&A, from a company's 10-K?” Read sections of 10-K filings (vX_0 variant) “Is there a vX_0 version of the 10-K sections endpoint I can call instead?” Get categorized 8-K disclosures “What kind of material event did a company disclose in its latest 8-K?” Read the text of 8-K current reports “Can I read the full parsed text of a company's 8-K about an acquisition or executive change?”

Massive (formerly Polygon.io) Benzinga API Browse analyst insights and rating calls “Where can I read analyst insights behind recent rating calls on a stock?” Look up financial analysts and their track records “Which analysts work at a particular research firm, and how accurate are they?” Get bull and bear case summaries for a stock “What are the bullish and bearish arguments analysts make about a stock?” Get a stock's consensus analyst rating “What is the Wall Street consensus rating and average price target for a stock?”

Massive (formerly Polygon.io) Us Futures API Look up futures contracts and specifications “Which futures contracts are listed for a product code?” List US futures exchanges “Which US derivatives exchanges trade futures?” Check whether a futures product is trading “Is a futures product open, paused or closed right now?” Browse futures products and specifications “What futures products are available in a given sector?”

Massive (formerly Polygon.io) Stocks:aggregates API Get the exponential moving average of a stock “What's the 20-day exponential moving average for Apple stock?” Get MACD for a stock “Has a stock's MACD line crossed above its signal line?” Get the relative strength index of a stock “Is a stock overbought or oversold on the RSI?” Get the simple moving average of a stock “Is a stock trading above its 200-day simple moving average?”

Massive (formerly Polygon.io) Fx:aggregates API Get the exponential moving average of a forex pair “What's the exponential moving average of EUR/USD on hourly bars?” Get MACD for a forex pair “Is the MACD histogram turning positive on a currency pair?” Get the relative strength index of a forex pair “Is a currency pair overbought on the RSI?” Get the simple moving average of a forex pair “What's the 200-day simple moving average for a currency pair?”

Massive (formerly Polygon.io) Crypto:aggregates API Get the exponential moving average of a crypto pair “What is the exponential moving average of Bitcoin over the last few weeks?” Get MACD for a crypto pair “Is MACD showing a bullish crossover on Ethereum?” Get the relative strength index of a crypto pair “Is a cryptocurrency overbought or oversold according to RSI?” Get the simple moving average of a crypto pair “What's the 50-day simple moving average of a crypto pair?”

Massive (formerly Polygon.io) Indices:aggregates API Get the exponential moving average of an index “What's the exponential moving average of the S&P 500 index?” Get MACD for an index “Is MACD signaling a trend change on the Nasdaq-100 index?” Get the relative strength index of an index “Is the broad market index overbought on RSI?” Get the simple moving average of an index “Is an index trading above its 200-day simple moving average?”

Massive (formerly Polygon.io) Options:aggregates API Get the exponential moving average of an option “What's the exponential moving average of an options contract's price?” Get MACD for an options contract “Is an option's price momentum turning according to MACD?” Get the relative strength index of an option “Is an options contract overbought on the RSI?” Get the simple moving average of an option “What's the simple moving average of an options contract's price?”

Massive (formerly Polygon.io) Etfglobal API Get ETF risk, reward and quant scores “How risky is an ETF according to its quantitative risk score?” List the holdings inside an ETF “What stocks does an ETF hold and at what weights?” Get ETF fund flows and NAV “Is money flowing into or out of an ETF?” Get an ETF's profile and metadata “What are an ETF's key financial and operational details, like issuer and exposure?”

Massive (formerly Polygon.io) Markets API List supported markets “Which markets are supported for data?” List exchanges by asset class “Which exchanges are listed for stocks or options?” List upcoming US market holidays “When is the next US stock market holiday?” Check whether US markets are open now “Is the US stock market open right now?”

Massive (formerly Polygon.io) Financials API Get a company's balance sheets “What are a company's total assets, liabilities and equity?” Get a company's cash flow statements “How much operating cash flow did a company generate?” Get a company's income statements “What were a company's revenue and net income last quarter?” Screen stocks by financial ratios “What is a stock's P/E, price-to-book and debt-to-equity ratio?”

Massive (formerly Polygon.io) Fed API Get CPI and PCE inflation data “What is the latest CPI inflation reading?” Get market and model inflation expectations “What do markets expect inflation to be over the next five or ten years?” Get labor market indicators “What's the current US unemployment rate?” Get US Treasury yields by maturity “What's the 10-year Treasury yield today?”

Showing 12 of 63 APIs with phrasing — see every API.

Kin Score

Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0

Composite quality — 71.6/100 · exemplar

Contract Quality 15.5 / 21

Developer Ergonomics 13.1 / 17

Access Clarity 13.8 / 17

Operational Transparency 7.2 / 11

Contract Governance 3.2 / 10

Discoverability 6.0 / 9

Regulatory Posture 5.7 / 15

Agent readiness — 46/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/massive-com: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

WebSockets

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 70

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.io Stocks API

Real-time and historical US equity market data including aggregates (minute/hour/day bars), trades, NBBO quotes, snapshots, ticker reference, splits, dividends, and financials. ...

Polygon.io Options API

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

Polygon.io Indices API

Real-time and historical index values for major US and global indices via REST and WebSocket.

Polygon.io Forex API

Real-time and historical FX prices for 1,000+ currency pairs via REST and WebSocket.

Polygon.io Crypto API

Aggregates, trades, snapshots, level-2 books, and L2 streaming for crypto pairs across major exchanges.

Polygon.io Futures API

Real-time and historical futures market data including aggregates, trades, quotes, and snapshots.

Massive (formerly Polygon.io) Benzinga API

The benzinga API from Massive (formerly Polygon.io) — 9 operation(s) for benzinga.

Massive (formerly Polygon.io) Crypto:aggregates API

The crypto:aggregates API from Massive (formerly Polygon.io) — 7 operation(s) for crypto:aggregates.

Massive (formerly Polygon.io) Crypto:last:trade API

The crypto:last:trade API from Massive (formerly Polygon.io) — 1 operation(s) for crypto:last:trade.

Massive (formerly Polygon.io) Crypto:open Close API

The crypto:open-close API from Massive (formerly Polygon.io) — 1 operation(s) for crypto:open-close.

Massive (formerly Polygon.io) Crypto:snapshot API

The crypto:snapshot API from Massive (formerly Polygon.io) — 4 operation(s) for crypto:snapshot.

Massive (formerly Polygon.io) Crypto:trades API

The crypto:trades API from Massive (formerly Polygon.io) — 2 operation(s) for crypto:trades.

Massive (formerly Polygon.io) Etfglobal API

The etfglobal API from Massive (formerly Polygon.io) — 5 operation(s) for etfglobal.

Massive (formerly Polygon.io) Fable API

The fable API from Massive (formerly Polygon.io) — 2 operation(s) for fable.

Massive (formerly Polygon.io) Fed API

The fed API from Massive (formerly Polygon.io) — 4 operation(s) for fed.

Massive (formerly Polygon.io) Financials API

The financials API from Massive (formerly Polygon.io) — 4 operation(s) for financials.

Massive (formerly Polygon.io) Futures:aggregates API

The futures:aggregates API from Massive (formerly Polygon.io) — 1 operation(s) for futures:aggregates.

Massive (formerly Polygon.io) Fx:aggregates API

The fx:aggregates API from Massive (formerly Polygon.io) — 7 operation(s) for fx:aggregates.

Massive (formerly Polygon.io) Fx:conversion API

The fx:conversion API from Massive (formerly Polygon.io) — 1 operation(s) for fx:conversion.

Massive (formerly Polygon.io) Fx:last:quote API

The fx:last:quote API from Massive (formerly Polygon.io) — 1 operation(s) for fx:last:quote.

Massive (formerly Polygon.io) Fx:quotes API

The fx:quotes API from Massive (formerly Polygon.io) — 1 operation(s) for fx:quotes.

Massive (formerly Polygon.io) Fx:snapshot API

The fx:snapshot API from Massive (formerly Polygon.io) — 3 operation(s) for fx:snapshot.

Massive (formerly Polygon.io) Fx:trades API

The fx:trades API from Massive (formerly Polygon.io) — 1 operation(s) for fx:trades.

Massive (formerly Polygon.io) Global Crypto API

The global_crypto API from Massive (formerly Polygon.io) — 1 operation(s) for global_crypto.

Massive (formerly Polygon.io) Global Forex API

The global_forex API from Massive (formerly Polygon.io) — 1 operation(s) for global_forex.

Massive (formerly Polygon.io) Indices:aggregates API

The indices:aggregates API from Massive (formerly Polygon.io) — 6 operation(s) for indices:aggregates.

Massive (formerly Polygon.io) Indices:snapshot API

The indices:snapshot API from Massive (formerly Polygon.io) — 1 operation(s) for indices:snapshot.

Massive (formerly Polygon.io) Markets API

Markets, exchanges, holidays, and status.

Massive (formerly Polygon.io) News API

Ticker news.

Massive (formerly Polygon.io) Options:aggregates API

The options:aggregates API from Massive (formerly Polygon.io) — 6 operation(s) for options:aggregates.

Massive (formerly Polygon.io) Options:last:trade API

The options:last:trade API from Massive (formerly Polygon.io) — 1 operation(s) for options:last:trade.

Massive (formerly Polygon.io) Options:open Close API

The options:open-close API from Massive (formerly Polygon.io) — 1 operation(s) for options:open-close.

Massive (formerly Polygon.io) Options:quotes API

The options:quotes API from Massive (formerly Polygon.io) — 1 operation(s) for options:quotes.

Massive (formerly Polygon.io) Options:snapshot API

The options:snapshot API from Massive (formerly Polygon.io) — 2 operation(s) for options:snapshot.

Massive (formerly Polygon.io) Options:trades API

The options:trades API from Massive (formerly Polygon.io) — 1 operation(s) for options:trades.

Massive (formerly Polygon.io) Reference API

Reference API

Massive (formerly Polygon.io) Reference:conditions API

The reference:conditions API from Massive (formerly Polygon.io) — 1 operation(s) for reference:conditions.

Massive (formerly Polygon.io) Reference:dividends API

The reference:dividends API from Massive (formerly Polygon.io) — 1 operation(s) for reference:dividends.

Massive (formerly Polygon.io) Reference:exchanges API

The reference:exchanges API from Massive (formerly Polygon.io) — 1 operation(s) for reference:exchanges.

Massive (formerly Polygon.io) Reference:news API

The reference:news API from Massive (formerly Polygon.io) — 1 operation(s) for reference:news.

Massive (formerly Polygon.io) Reference:options:contract API

The reference:options:contract API from Massive (formerly Polygon.io) — 1 operation(s) for reference:options:contract.

Massive (formerly Polygon.io) Reference:options:contracts:list API

The reference:options:contracts:list API from Massive (formerly Polygon.io) — 1 operation(s) for reference:options:contracts:list.

Massive (formerly Polygon.io) Reference:related:companies API

The reference:related:companies API from Massive (formerly Polygon.io) — 1 operation(s) for reference:related:companies.

Massive (formerly Polygon.io) Reference:sec:filing API

The reference:sec:filing API from Massive (formerly Polygon.io) — 1 operation(s) for reference:sec:filing.

Massive (formerly Polygon.io) Reference:sec:filing:file API

The reference:sec:filing:file API from Massive (formerly Polygon.io) — 1 operation(s) for reference:sec:filing:file.

Massive (formerly Polygon.io) Reference:sec:filing:files API

The reference:sec:filing:files API from Massive (formerly Polygon.io) — 1 operation(s) for reference:sec:filing:files.

Massive (formerly Polygon.io) Reference:sec:filings API

The reference:sec:filings API from Massive (formerly Polygon.io) — 1 operation(s) for reference:sec:filings.

Massive (formerly Polygon.io) Reference:stocks API

The reference:stocks API from Massive (formerly Polygon.io) — 2 operation(s) for reference:stocks.

Massive (formerly Polygon.io) Reference:stocks:ipos API

The reference:stocks:ipos API from Massive (formerly Polygon.io) — 1 operation(s) for reference:stocks:ipos.

Massive (formerly Polygon.io) Reference:stocks:market API

The reference:stocks:market API from Massive (formerly Polygon.io) — 2 operation(s) for reference:stocks:market.

Massive (formerly Polygon.io) Reference:tickers:get API

The reference:tickers:get API from Massive (formerly Polygon.io) — 2 operation(s) for reference:tickers:get.

Massive (formerly Polygon.io) Reference:tickers:list API

The reference:tickers:list API from Massive (formerly Polygon.io) — 1 operation(s) for reference:tickers:list.

Massive (formerly Polygon.io) Reference:tickers:types API

The reference:tickers:types API from Massive (formerly Polygon.io) — 1 operation(s) for reference:tickers:types.

Massive (formerly Polygon.io) Snapshot API

The Snapshot API from Massive (formerly Polygon.io) — 1 operation(s) for snapshot.

Massive (formerly Polygon.io) Stocks:aggregates API

The stocks:aggregates API from Massive (formerly Polygon.io) — 7 operation(s) for stocks:aggregates.

Massive (formerly Polygon.io) Stocks:last:quote API

The stocks:last:quote API from Massive (formerly Polygon.io) — 1 operation(s) for stocks:last:quote.

Massive (formerly Polygon.io) Stocks:last:trade API

The stocks:last:trade API from Massive (formerly Polygon.io) — 1 operation(s) for stocks:last:trade.

Massive (formerly Polygon.io) Stocks:open Close API

The stocks:open-close API from Massive (formerly Polygon.io) — 2 operation(s) for stocks:open-close.

Massive (formerly Polygon.io) Stocks:quotes API

The stocks:quotes API from Massive (formerly Polygon.io) — 2 operation(s) for stocks:quotes.

Massive (formerly Polygon.io) Stocks:snapshot API

The stocks:snapshot API from Massive (formerly Polygon.io) — 3 operation(s) for stocks:snapshot.

Massive (formerly Polygon.io) Stocks:trades API

The stocks:trades API from Massive (formerly Polygon.io) — 2 operation(s) for stocks:trades.

Massive (formerly Polygon.io) Summaries API

The Summaries API from Massive (formerly Polygon.io) — 1 operation(s) for summaries.

Massive (formerly Polygon.io) Tickers API

Ticker reference and metadata.

Massive (formerly Polygon.io) Tmx API

The tmx API from Massive (formerly Polygon.io) — 1 operation(s) for tmx.

Massive (formerly Polygon.io) Us Futures API

The us_futures API from Massive (formerly Polygon.io) — 8 operation(s) for us_futures.

Massive (formerly Polygon.io) Us Options API

The us_options API from Massive (formerly Polygon.io) — 3 operation(s) for us_options.

Massive (formerly Polygon.io) Us Stocks All API

The us_stocks_all API from Massive (formerly Polygon.io) — 2 operation(s) for us_stocks_all.

Massive (formerly Polygon.io) Us Stocks Reference API

The us_stocks_reference API from Massive (formerly Polygon.io) — 3 operation(s) for us_stocks_reference.

Massive (formerly Polygon.io) Corporate Actions API

Stock splits and dividends.

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Postman Collections 17

Ready-to-run Postman collections for exercising this provider's APIs.

Polygon Crypto REST Aggregates API

POSTMAN

Polygon Crypto REST Aggregates Books API

POSTMAN

Polygon Crypto REST Aggregates Contracts API

POSTMAN

Polygon Crypto REST Aggregates Conversion API

POSTMAN

Polygon Crypto REST Aggregates CorporateActions API

POSTMAN

Polygon Crypto REST API

POSTMAN

Polygon Crypto REST Aggregates DailyBars API

POSTMAN

Polygon Forex REST API

POSTMAN

Polygon Indices REST API

POSTMAN

Polygon Crypto REST Aggregates Markets API

POSTMAN

Polygon Crypto REST Aggregates News API

POSTMAN

Polygon Options REST API

POSTMAN

Polygon Crypto REST Aggregates Quotes API

POSTMAN

Polygon Reference REST API

POSTMAN

Polygon Crypto REST Aggregates Snapshots API

POSTMAN

Polygon Stocks REST API

POSTMAN

Polygon Crypto REST Aggregates Tickers API

POSTMAN

Scroll for all 17

Open Collections 19

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Polygon Crypto REST Aggregates API

OPEN COLLECTION

Polygon Crypto REST Aggregates Books API

OPEN COLLECTION

Polygon Crypto REST Aggregates Contracts API

OPEN COLLECTION

Polygon Crypto REST Aggregates Conversion API

OPEN COLLECTION

Polygon Crypto REST Aggregates CorporateActions API

OPEN COLLECTION

Polygon Crypto REST API

OPEN COLLECTION

Polygon Crypto REST Aggregates DailyBars API

OPEN COLLECTION

Polygon Forex REST API

OPEN COLLECTION

Polygon Indices REST API

OPEN COLLECTION

Polygon Crypto REST Aggregates Markets API

OPEN COLLECTION

Polygon Crypto REST Aggregates News API

OPEN COLLECTION

Polygon API

OPEN COLLECTION

Polygon Options REST API

OPEN COLLECTION

Polygon Crypto REST Aggregates Quotes API

OPEN COLLECTION

Polygon Reference REST API

OPEN COLLECTION

Polygon Crypto REST Aggregates Snapshots API

OPEN COLLECTION

Polygon Stocks REST API

OPEN COLLECTION

Polygon Crypto REST Aggregates Tickers API

OPEN COLLECTION

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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.

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

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MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Massive MCP server — remote https://mcp.massive.com (OAuth) + open-source mcp_massive (stdio)

Remote MCP server at mcp.massive.com; 3 tools listed.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Polygon Plans Pricing

12 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Polygon Rate Limits

6 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Polygon Finops

FINOPS

Features 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 2

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Polygon.io WebSocket APIs

Streaming WebSocket APIs from Polygon.io (now operating as Massive) for real-time and delayed US Stocks, Options, Forex, Crypto, Indices, and Futures market data. Clients connec...

ASYNCAPI

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 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Polygon Context

10 classes · 40 properties

JSON-LD

Spectral Rules 3

Spectral governance rulesets for linting and validating these APIs.

Massive (formerly Polygon.io) API Rules

5 rules · 1 errors 4 warnings

SPECTRAL

Massive (formerly Polygon.io) API Rules

5 rules · 4 warnings 1 info

SPECTRAL

Massive (formerly Polygon.io) API Rules

21 rules · 4 errors 13 warnings 4 info

SPECTRAL

OpenAPI Overlays 64

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Massive Com Benzinga Api Phrasing Overlay

10 actions · phrasing · massive-com-benzinga-api-openapi.yml

GENERATED

Massive Com Corporate Actions Api Phrasing Overlay

3 actions · phrasing · massive-com-corporate-actions-api-openapi.yml

GENERATED

Massive Com Crypto Aggregates Api Phrasing Overlay

8 actions · phrasing · massive-com-crypto-aggregates-api-openapi.yml

GENERATED

Massive Com Crypto Last Trade Api Phrasing Overlay

2 actions · phrasing · massive-com-crypto-last-trade-api-openapi.yml

GENERATED

Massive Com Crypto Open Close Api Phrasing Overlay

2 actions · phrasing · massive-com-crypto-open-close-api-openapi.yml

GENERATED

Massive Com Crypto Snapshot Api Phrasing Overlay

5 actions · phrasing · massive-com-crypto-snapshot-api-openapi.yml

GENERATED

Massive Com Crypto Trades Api Phrasing Overlay

3 actions · phrasing · massive-com-crypto-trades-api-openapi.yml

GENERATED

Massive Com Etfglobal Api Phrasing Overlay

6 actions · phrasing · massive-com-etfglobal-api-openapi.yml

GENERATED

Massive Com Fable Api Phrasing Overlay

3 actions · phrasing · massive-com-fable-api-openapi.yml

GENERATED

Massive Com Fed Api Phrasing Overlay

5 actions · phrasing · massive-com-fed-api-openapi.yml

GENERATED

Massive Com Financials Api Phrasing Overlay

5 actions · phrasing · massive-com-financials-api-openapi.yml

GENERATED

Massive Com Futures Aggregates Api Phrasing Overlay

2 actions · phrasing · massive-com-futures-aggregates-api-openapi.yml

GENERATED

Massive Com Fx Aggregates Api Phrasing Overlay

8 actions · phrasing · massive-com-fx-aggregates-api-openapi.yml

GENERATED

Massive Com Fx Conversion Api Phrasing Overlay

2 actions · phrasing · massive-com-fx-conversion-api-openapi.yml

GENERATED

Massive Com Fx Last Quote Api Phrasing Overlay

2 actions · phrasing · massive-com-fx-last-quote-api-openapi.yml

GENERATED

Massive Com Fx Quotes Api Phrasing Overlay

2 actions · phrasing · massive-com-fx-quotes-api-openapi.yml

GENERATED

Massive Com Fx Snapshot Api Phrasing Overlay

4 actions · phrasing · massive-com-fx-snapshot-api-openapi.yml

GENERATED

Massive Com Fx Trades Api Phrasing Overlay

2 actions · phrasing · massive-com-fx-trades-api-openapi.yml

GENERATED

Massive Com Global Crypto Api Phrasing Overlay

2 actions · phrasing · massive-com-global-crypto-api-openapi.yml

GENERATED

Massive Com Global Forex Api Phrasing Overlay

2 actions · phrasing · massive-com-global-forex-api-openapi.yml

GENERATED

Massive Com Indices Aggregates Api Phrasing Overlay

7 actions · phrasing · massive-com-indices-aggregates-api-openapi.yml

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Massive Com Indices Snapshot Api Phrasing Overlay

2 actions · phrasing · massive-com-indices-snapshot-api-openapi.yml

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Massive Com Markets Api Phrasing Overlay

5 actions · phrasing · massive-com-markets-api-openapi.yml

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Massive Com News Api Phrasing Overlay

2 actions · phrasing · massive-com-news-api-openapi.yml

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Massive Com Options Aggregates Api Phrasing Overlay

7 actions · phrasing · massive-com-options-aggregates-api-openapi.yml

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Massive Com Options Last Trade Api Phrasing Overlay

2 actions · phrasing · massive-com-options-last-trade-api-openapi.yml

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Massive Com Options Open Close Api Phrasing Overlay

2 actions · phrasing · massive-com-options-open-close-api-openapi.yml

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Massive Com Options Quotes Api Phrasing Overlay

2 actions · phrasing · massive-com-options-quotes-api-openapi.yml

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Massive Com Options Snapshot Api Phrasing Overlay

3 actions · phrasing · massive-com-options-snapshot-api-openapi.yml

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Massive Com Options Trades Api Phrasing Overlay

2 actions · phrasing · massive-com-options-trades-api-openapi.yml

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Massive Com Reference Api Phrasing Overlay

15 actions · phrasing · massive-com-reference-api-openapi.yml

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Massive Com Reference Conditions Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-conditions-api-openapi.yml

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Massive Com Reference Dividends Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-dividends-api-openapi.yml

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Massive Com Reference Exchanges Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-exchanges-api-openapi.yml

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Massive Com Reference News Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-news-api-openapi.yml

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Massive Com Reference Options Contract Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-options-contract-api-openapi.yml

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Massive Com Reference Options Contracts List Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-options-contracts-list-api-openapi.yml

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Massive Com Reference Related Companies Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-related-companies-api-openapi.yml

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Massive Com Reference Sec Filing Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-sec-filing-api-openapi.yml

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Massive Com Reference Sec Filing File Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-sec-filing-file-api-openapi.yml

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Massive Com Reference Sec Filing Files Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-sec-filing-files-api-openapi.yml

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Massive Com Reference Sec Filings Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-sec-filings-api-openapi.yml

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Massive Com Reference Stocks Api Phrasing Overlay

3 actions · phrasing · massive-com-reference-stocks-api-openapi.yml

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Massive Com Reference Stocks Ipos Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-stocks-ipos-api-openapi.yml

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Massive Com Reference Stocks Market Api Phrasing Overlay

3 actions · phrasing · massive-com-reference-stocks-market-api-openapi.yml

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Massive Com Reference Tickers Get Api Phrasing Overlay

3 actions · phrasing · massive-com-reference-tickers-get-api-openapi.yml

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Massive Com Reference Tickers List Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-tickers-list-api-openapi.yml

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Massive Com Reference Tickers Types Api Phrasing Overlay

2 actions · phrasing · massive-com-reference-tickers-types-api-openapi.yml

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Massive Com Snapshot Api Phrasing Overlay

2 actions · phrasing · massive-com-snapshot-api-openapi.yml

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Massive Com Stocks Aggregates Api Phrasing Overlay

8 actions · phrasing · massive-com-stocks-aggregates-api-openapi.yml

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Massive Com Stocks Last Quote Api Phrasing Overlay

2 actions · phrasing · massive-com-stocks-last-quote-api-openapi.yml

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Massive Com Stocks Last Trade Api Phrasing Overlay

2 actions · phrasing · massive-com-stocks-last-trade-api-openapi.yml

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Massive Com Stocks Open Close Api Phrasing Overlay

3 actions · phrasing · massive-com-stocks-open-close-api-openapi.yml

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Massive Com Stocks Quotes Api Phrasing Overlay

3 actions · phrasing · massive-com-stocks-quotes-api-openapi.yml

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Massive Com Stocks Snapshot Api Phrasing Overlay

4 actions · phrasing · massive-com-stocks-snapshot-api-openapi.yml

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Massive Com Stocks Trades Api Phrasing Overlay

3 actions · phrasing · massive-com-stocks-trades-api-openapi.yml

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Massive Com Summaries Api Phrasing Overlay

2 actions · phrasing · massive-com-summaries-api-openapi.yml

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Massive Com Tickers Api Phrasing Overlay

4 actions · phrasing · massive-com-tickers-api-openapi.yml

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Massive Com Tmx Api Phrasing Overlay

2 actions · phrasing · massive-com-tmx-api-openapi.yml

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Massive Com Us Futures Api Phrasing Overlay

9 actions · phrasing · massive-com-us-futures-api-openapi.yml

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Massive Com Us Options Api Phrasing Overlay

4 actions · phrasing · massive-com-us-options-api-openapi.yml

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Massive Com Us Stocks All Api Phrasing Overlay

3 actions · phrasing · massive-com-us-stocks-all-api-openapi.yml

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Massive Com Us Stocks Reference Api Phrasing Overlay

4 actions · phrasing · massive-com-us-stocks-reference-api-openapi.yml

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Polygon Openapi Overlay

3 actions · documentation · polygon-openapi-original.json

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JSON Schema 5

Standalone JSON Schema definitions for this provider's data models.

Polygon Aggregate Bar

9 properties

JSON SCHEMA

Polygon Options Contract

9 properties

JSON SCHEMA

Polygon NBBO Quote Tick

9 properties

JSON SCHEMA

Polygon Ticker

12 properties

JSON SCHEMA

Polygon Trade Tick

8 properties

JSON SCHEMA

JSON Structure 3

JSON Structure definitions describing this provider's data shapes.

Polygon Aggregate Bar Structure

9 properties

JSON STRUCTURE

Polygon Options Contract Structure

9 properties

JSON STRUCTURE

Polygon Ticker Structure

12 properties

JSON STRUCTURE

Examples 5

Example request and response payloads for these APIs.

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

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Polygon Authentication

apiKey/http · 2 schemes

SECURITY

Polygon Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Polygon Scopes

6 scopes · authorizationCode/clientCredentials

6 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Polygon Agentic Access

175 operations

175 operations · 0 acting

AGENTIC

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

Portal

Portal

GettingStarted

GettingStarted

Signup

Signup

Login

Documentation 3

Reference material describing how the API behaves

OpenAPI

OpenAPI

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

AgenticAccess

Design & Contract 21

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

Idempotency

DataModel

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

SpectralRules

Vocabulary

JSONLD

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Build 10

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Packages

Packages

PostmanWorkspace

PostmanWorkspace

GitHubOrganization

GitHubOrganization

Official Polygon (Massive) MCP Server

Tools

Official PHP SDK

SDKs

Python SDK

SDKs

JavaScript / TypeScript SDK

SDKs

Kotlin / JVM SDK

SDKs

Go SDK

SDKs

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Access & Security 3

Authentication, authorization, and security posture

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 4

Status, limits, changes, and where to get help

ChangeLog

StatusPage

Support

RateLimits

Commercial 5

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

FinOps

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: massive-com
name: Massive (formerly Polygon.io)
url: https://raw.githubusercontent.com/api-evangelist/massive-com/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - scopes
  - security
  - url: https://polygon.io/
    status: 301
    note: declared website redirects to https://massive.com/ — a different registrable domain (polygon.io -> massive.com),
      possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/polygon.png
description: 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.
specificationVersion: '0.23'
created: '2026-05-28'
modified: '2026-09-16'
x-source: public-apis/public-apis
x-category: Finance
x-type: company
x-tier: 2
x-tier-reason: pipeline-enriched
tags:
- Finance
- Fintech
- Market Data
- Stocks
- Options
- Forex
- Crypto
- Indices
- Futures
- WebSocket
- Real-Time
- Historical
- Public APIs
- Financial Data
tags_raw:
- Finance
- Fintech
- Market Data
- Stocks
- Options
- Forex
- Crypto
- Indices
- Futures
- WebSockets
- Real-time
- Historical
- Public APIs
- Financial Data
apis:
- aid: massive-com:websocket-api
  name: Polygon WebSocket API
  description: 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, quotes, aggregates, and book updates.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - WebSocket
  - Streaming
  - Real-Time
  tags_raw:
  - WebSocket
  - Streaming
  - Real-time
  properties:
  - type: Documentation
    url: https://polygon.io/docs/stocks/ws_getting-started
  - type: AsyncAPI
    url: asyncapi/polygon-websocket-asyncapi.yml
  - type: JSONSchema
    url: json-schema/polygon-trade-schema.json
  - type: JSONSchema
    url: json-schema/polygon-quote-schema.json
  - type: Examples
    url: examples/polygon-websocket-subscribe-example.json
- name: Polygon.io Stocks API
  tags:
  - Stocks
  - Market Data
  - Real-Time
  tags_raw:
  - Stocks
  - Equities
  - Market Data
  - Real-time
  image: https://kinlane-images.s3.amazonaws.com/shared/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
  - type: AsyncAPI
    url: asyncapi/polygon-io-asyncapi.yml
  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
- name: Polygon.io Options API
  tags:
  - Options
  - OPRA
  - Market Data
  image: https://kinlane-images.s3.amazonaws.com/shared/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
  - type: AsyncAPI
    url: asyncapi/polygon-io-asyncapi.yml
  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
- name: Polygon.io Indices API
  tags:
  - Indices
  - Market Data
  image: https://kinlane-images.s3.amazonaws.com/shared/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
  - type: AsyncAPI
    url: asyncapi/polygon-io-asyncapi.yml
  x-features:
  - Index values and aggregates
  - Snapshots
  - WebSocket streaming
  x-use-cases:
  - Benchmark performance tracking
  - Index-based product pricing
- name: Polygon.io Forex API
  tags:
  - Forex
  - FX
  - Currency
  - Market Data
  tags_raw:
  - Forex
  - FX
  - Currencies
  - Market Data
  image: https://kinlane-images.s3.amazonaws.com/shared/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
  - type: AsyncAPI
    url: asyncapi/polygon-io-asyncapi.yml
  x-features:
  - 1,000+ currency pairs
  - Aggregates and quotes
  - WebSocket streaming
  x-use-cases:
  - Multi-currency reporting
  - FX trading strategies
- name: Polygon.io Crypto API
  tags:
  - Crypto
  - Cryptocurrency
  - Market Data
  image: https://kinlane-images.s3.amazonaws.com/shared/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
  - type: AsyncAPI
    url: asyncapi/polygon-io-asyncapi.yml
  x-features:
  - Aggregated cross-exchange data
  - Level-2 order books
  - WebSocket streaming
  x-use-cases:
  - Crypto trading and analytics
  - Cross-exchange arbitrage research
- name: Polygon.io Futures API
  tags:
  - Futures
  - Market Data
  image: https://kinlane-images.s3.amazonaws.com/shared/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
  - type: AsyncAPI
    url: asyncapi/polygon-io-asyncapi.yml
  x-features:
  - CME-licensed futures data
  - Aggregates and snapshots
  - Continuous contracts
  x-use-cases:
  - Futures trading research
  - Commodities and rates analytics
- aid: massive-com:massive-com-benzinga-api
  name: Massive (formerly Polygon.io) Benzinga API
  description: The benzinga API from Massive (formerly Polygon.io) — 9 operation(s) for benzinga.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - benzinga
  properties:
  - type: OpenAPI
    url: openapi/massive-com-benzinga-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-crypto-aggregates-api
  name: Massive (formerly Polygon.io) Crypto:aggregates API
  description: The crypto:aggregates API from Massive (formerly Polygon.io) — 7 operation(s) for crypto:aggregates.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - crypto:aggregates
  properties:
  - type: OpenAPI
    url: openapi/massive-com-crypto-aggregates-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-crypto-last-trade-api
  name: Massive (formerly Polygon.io) Crypto:last:trade API
  description: The crypto:last:trade API from Massive (formerly Polygon.io) — 1 operation(s) for crypto:last:trade.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - crypto:last:trade
  properties:
  - type: OpenAPI
    url: openapi/massive-com-crypto-last-trade-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-crypto-open-close-api
  name: Massive (formerly Polygon.io) Crypto:open Close API
  description: The crypto:open-close API from Massive (formerly Polygon.io) — 1 operation(s) for crypto:open-close.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - crypto:open-close
  properties:
  - type: OpenAPI
    url: openapi/massive-com-crypto-open-close-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-crypto-snapshot-api
  name: Massive (formerly Polygon.io) Crypto:snapshot API
  description: The crypto:snapshot API from Massive (formerly Polygon.io) — 4 operation(s) for crypto:snapshot.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - crypto:snapshot
  properties:
  - type: OpenAPI
    url: openapi/massive-com-crypto-snapshot-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-crypto-trades-api
  name: Massive (formerly Polygon.io) Crypto:trades API
  description: The crypto:trades API from Massive (formerly Polygon.io) — 2 operation(s) for crypto:trades.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - crypto:trades
  properties:
  - type: OpenAPI
    url: openapi/massive-com-crypto-trades-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-etfglobal-api
  name: Massive (formerly Polygon.io) Etfglobal API
  description: The etfglobal API from Massive (formerly Polygon.io) — 5 operation(s) for etfglobal.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - etfglobal
  properties:
  - type: OpenAPI
    url: openapi/massive-com-etfglobal-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-fable-api
  name: Massive (formerly Polygon.io) Fable API
  description: The fable API from Massive (formerly Polygon.io) — 2 operation(s) for fable.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - fable
  properties:
  - type: OpenAPI
    url: openapi/massive-com-fable-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-fed-api
  name: Massive (formerly Polygon.io) Fed API
  description: The fed API from Massive (formerly Polygon.io) — 4 operation(s) for fed.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - fed
  properties:
  - type: OpenAPI
    url: openapi/massive-com-fed-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-financials-api
  name: Massive (formerly Polygon.io) Financials API
  description: The financials API from Massive (formerly Polygon.io) — 4 operation(s) for financials.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - Finance
  tags_raw:
  - financials
  properties:
  - type: OpenAPI
    url: openapi/massive-com-financials-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-futures-aggregates-api
  name: Massive (formerly Polygon.io) Futures:aggregates API
  description: The futures:aggregates API from Massive (formerly Polygon.io) — 1 operation(s) for futures:aggregates.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - futures:aggregates
  properties:
  - type: OpenAPI
    url: openapi/massive-com-futures-aggregates-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-fx-aggregates-api
  name: Massive (formerly Polygon.io) Fx:aggregates API
  description: The fx:aggregates API from Massive (formerly Polygon.io) — 7 operation(s) for fx:aggregates.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - fx:aggregates
  properties:
  - type: OpenAPI
    url: openapi/massive-com-fx-aggregates-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices
  - type: APIReference
    url: https://polygon.io/docs/indices
  - type: Documentation
    url: https://polygon.io/docs/forex
  - type: APIReference
    url: https://polygon.io/docs/forex
  - type: Examples
    url: examples/polygon-forex-conversion-example.json
  - type: Documentation
    url: https://polygon.io/docs/crypto
  - type: APIReference
    url: https://polygon.io/docs/crypto
  - type: Documentation
    url: https://polygon.io/docs/stocks/get_v3_reference_tickers
  - type: JSONSchema
    url: json-schema/polygon-ticker-schema.json
  - type: JSONStructure
    url: json-structure/polygon-ticker-structure.json
  - type: Examples
    url: examples/polygon-reference-tickers-example.json
- aid: massive-com:massive-com-fx-conversion-api
  name: Massive (formerly Polygon.io) Fx:conversion API
  description: The fx:conversion API from Massive (formerly Polygon.io) — 1 operation(s) for fx:conversion.
  humanURL: https://polygon.io/docs/stocks/ws_getting-started
  baseURL: wss://socket.polygon.io
  tags:
  - fx:conversion
  properties:
  - type: OpenAPI
    url: openapi/massive-com-fx-conversion-api-openapi.yml
  - type: Documentation
    url: https://polygon.io/docs/stocks
  - type: APIReference
    url: https://polygon.io/docs/stocks
  - type: Authentication
    url: https://polygon.io/docs/getting-started
  - type: JSONSchema
    url: json-schema/polygon-aggregate-bar-schema.json
  - type: JSONStructure
    url: json-structure/polygon-aggregate-bar-structure.json
  - type: Examples
    url: examples/polygon-stocks-aggregate-bars-example.json
  - type: Documentation
    url: https://polygon.io/docs/options
  - type: APIReference
    url: https://polygon.io/docs/options
  - type: JSONSchema
    url: json-schema/polygon-options-contract-schema.json
  - type: JSONStructure
    url: json-structure/polygon-options-contract-structure.json
  - type: Examples
    url: examples/polygon-options-chain-snapshot-example.json
  - type: Documentation
    url: https://polygon.io/docs/indices


# --- truncated at 32 KB (138 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/massive-com/refs/heads/main/apis.yml

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