CME Group

CME Reference Data API

A set of JSON RESTful web service APIs that provide access to product and instrument reference data for CME Group, BrokerTec, EBS, hosted partners, and CME Group-cleared markets. Supports OAuth-secured access to product definitions, instrument metadata, market segment information, and trading hours used to power trading automation and risk systems.

GitHub

Documentation

📖
Documentation
https://www.cmegroup.com/trading/market-tech-and-data-services/cme-reference-data-api.html

Other Resources

🔗
Reference
https://cmegroupclientsite.atlassian.net/wiki/display/EPICSANDBOX/CME+Reference+Data+API+Version+3
🔗
Portal
https://www.cmegroup.com/market-data/market-data-api.html
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/cme-group/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
aid: cme-group:cme-reference-data-api
name: CME Reference Data API
tags:
- Instruments
- Authentication
- Product
- Reference Data
- REST
tags_raw:
- Instruments
- OAuth
- Products
- Reference Data
- REST
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://www.cmegroup.com/trading/market-tech-and-data-services/cme-reference-data-api.html
baseURL: https://refdata.api.cmegroup.com/refdata/v3
properties:
- url: https://www.cmegroup.com/trading/market-tech-and-data-services/cme-reference-data-api.html
  type: Documentation
- url: https://cmegroupclientsite.atlassian.net/wiki/display/EPICSANDBOX/CME+Reference+Data+API+Version+3
  type: Reference
- url: https://www.cmegroup.com/market-data/market-data-api.html
  type: Portal
description: A set of JSON RESTful web service APIs that provide access to product and instrument reference
  data for CME Group, BrokerTec, EBS, hosted partners, and CME Group-cleared markets. Supports OAuth-secured
  access to product definitions, instrument metadata, market segment information, and trading hours used
  to power trading automation and risk systems.
x-features:
- name: Product Reference
  description: Lookup of CME Group product definitions across asset classes.
- name: Instrument Reference
  description: Detailed instrument-level data including expirations, contract specs, and tick sizes.
- name: Trading Hours
  description: Authoritative trading hours and holiday calendars by venue.
- name: OAuth Authentication
  description: OAuth 2.0 secured access to reference data endpoints.
x-useCases:
- name: Trading Automation
  description: Hydrate algorithmic trading systems with current product and instrument metadata.
- name: Risk and Compliance
  description: Drive risk and surveillance systems with authoritative reference data.
- name: Order Routing
  description: Validate and route orders against the latest CME instrument definitions.