Financial Market Data Platform

Stocks APIs, Forex, Crypto, and More

Built by Developers for Developers

Polygon.io

Trusted by Top Companies, Governments, and Institutions

Use Any Language

Clients for All Major Development Languages

Create your application in any language. No more C++/Java limitations. Use the technology you already know, and spend your time creating, not integrating.

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package main
import (
    "fmt"
    websocket "github.com/gorilla/websocket"
)

const APIKEY = "YOUR_API_KEY"
const CHANNELS = "C.AUD/USD,C.USD/EUR,C.USD/JPY"

func main(){
    c, _, err := websocket.DefaultDialer.Dial("wss://socket.polygon.io/forex", nil )
    if err != nil {
        panic( err )
    }
    defer c.Close()
    c.WriteMessage( websocket.TextMessage, []byte( fmt.Sprintf("{\"action\":\"auth\",\"params\":\"%s\"}", APIKEY) ) )
    c.WriteMessage( websocket.TextMessage, []byte( fmt.Sprintf("{\"action\":\"subscribe\",\"params\":\"%s\"}", CHANNELS) ) )
    var msg interface{}
    for {
        err := c.ReadJSON( &msg ); if err != nil {
            panic( err )
        }
        fmt.Println( "Message:", msg )
    }
}

Accurate, Fast, and Reliable

Complete redundancy, horizontally scalable, built on proven technologies.

< 1 millisecond

Ultra low latency APIs

Equinix NY Datacenters

Same datacenters as the exchanges

1,000,000+

Messages per Second

Impeccable Reliability

Multiple redundancies

Create Powerful Visualizations

Develop for Any Platform

Polygon.io's market data APIs give you the tools you need to create visualizations for any platform or operating system, in the coding language which fits you best.

Success Stories

You're in Good Company

Data for BigQuery

Polygon.io has teamed up with Google to provide BigQuery public dataset for stock data.

Powering Brokerage

Alpaca uses Polygon.io to power their cutting edge API first brokerage platform.

Digital Banking & Trading

Revolut trusts Polygon.io to power their new trading application for US stocks.

Simple Pricing.

Instant Access. Cancel Anytime.

Stocks

All US Exchanges + Dark Pools

Basic
NEW

Great for trying our APIs

Free
Get your Free API Key
  • 100% Market Coverage
  • 5 API Calls per Minute
  • End of Day Data
  • 2 Years Historical Data
  • 1 Minute Granularity
  • Level 1 Data
  • Limit Up Limit Down
  • Imbalances

  • Individual Use
  • Pro / Non-Pro

Starter
NEW

Great for Historical Data

$99/m
Sign Up
  • 100% Market Coverage
  • Unlimited API Calls
  • 15-Minute Delayed Data
  • 15 Years Historical Data
  • 1 Minute Granularity
  • Level 1 Data
  • Limit Up Limit Down
  • Imbalances

  • Individual Use
  • Pro / Non-Pro

Developer
POPULAR

Great for Real Time Data

$199/m
Sign Up
  • 100% Market Coverage
  • Unlimited API Calls
  • Real-Time Data
  • 15 Years Historical Data
  • Tick Level Granularity
  • Level 1 Data
  • Limit Up Limit Down
  • Imbalances

  • Individual Use
  • Non-Pro Use Only

Professional
NEW

Great for Advanced Data

$499/m
Sign Up
  • 100% Market Coverage
  • Unlimited API Calls
  • Real-Time Data
  • 15 Years Historical Data
  • Tick Level Granularity
  • Level 1.5 Data
  • Limit Up Limit Down
  • Imbalances

  • Individual Use
  • Non-Pro Use Only

Currencies

Crypto + Forex

Basic
NEW

Great for trying our APIs

Free
Get your Free API Key
  • Crypto + Forex
  • 5 API Calls per Minute
  • End of Day Data
  • 2 Years Historical Data
  • 1 Minute Granularity

  • Individual Use
  • Pro / Non-Pro

Starter
POPULAR

Great for Historical Data

$49/m
Sign Up
  • Crypto + Forex
  • Unlimited API Calls
  • Real-Time Data
  • 15 Years Historical Data
  • Tick Level Granularity

  • Individual Use
  • Pro / Non-Pro
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Not sure which plan to choose?

Contact Us

We’re always here to assist if you happen to need our help. Feel free to contact us and one of our team members will gladly walk you through choosing the right plan for you.

Contact Us

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Polygon is a dream come true when compared to some of the largest players in the market. They provide excellent quality data through a modern API with no long term contract.

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Dan Aisen

Founder @ Proof Trading