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Market Data Documentation

The Market Data REST API, its SDKs for Go, Python, JavaScript, C#, PHP and Java, and the Google Sheets add-on.

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# Market Data Documentation

> The Market Data REST API, its SDKs for Go, Python, JavaScript, C#, PHP and Java, and the Google Sheets add-on.

Authentication, and how to obtain a token:
https://www.marketdata.app/docs/api/authentication/index.md

## Overview

- [Market Data Documentation](https://www.marketdata.app/docs/index.md): Documentation for the Market Data REST API, the Go, Python, JavaScript, C#, PHP and Java SDKs, and the Google Sheets add-on.

## API reference

- [Market Data API Documentation](https://www.marketdata.app/docs/api/index.md): The Market Data API is a REST service with standard HTTP methods and status codes, returning JSON for code or CSV for a spreadsheet.
- [Authentication](https://www.marketdata.app/docs/api/authentication/index.md): Authenticate every Market Data API request with a Bearer Token, sent in a header or a URL parameter, and keep that token out of public code.
- [CORS](https://www.marketdata.app/docs/api/cors/index.md): The Market Data API sends CORS headers so you can call it from a browser for development or personal use. Learn what that permits and what it does not.
- [Dates and Times](https://www.marketdata.app/docs/api/dates-and-times/index.md): How the Market Data API formats response timestamps, which timezone it reports them in, and which date formats a request accepts.
- [Mutual Funds](https://www.marketdata.app/docs/api/funds/index.md): Root endpoint /v1/funds/ and the mutual fund endpoints that return historical net asset value pricing data for any supported mutual fund symbol.
- [Mutual Fund Candles](https://www.marketdata.app/docs/api/funds/candles/index.md): Get historical open, high, low, close and volume candles for a mutual fund, with the request parameters and response attributes documented.
- [Markets](https://www.marketdata.app/docs/api/markets/index.md): Root endpoint /v1/markets/ and the markets endpoints that return reference data and open or closed status for the markets that Market Data covers.
- [Market Status](https://www.marketdata.app/docs/api/markets/status/index.md): Get the past, present, or future status for a stock market. The endpoint will respond with "open" for trading days or "closed" for weekends or market holidays.
- [Options](https://www.marketdata.app/docs/api/options/index.md): The Market Data options endpoints cover chains, expirations, quotes and OCC symbol lookup, for both real-time and historical queries.
- [Option Chain](https://www.marketdata.app/docs/api/options/chain/index.md): Get a current or historical end of day option chain for an underlying ticker symbol. Optional parameters allow for extensive filtering of the chain.
- [Option Expirations](https://www.marketdata.app/docs/api/options/expirations/index.md): Get the current or historical option expiration dates for an underlying symbol, narrowed by strike price or by a date in the past.
- [Option Lookup](https://www.marketdata.app/docs/api/options/lookup/index.md): Convert a human-readable option descri
…

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