CME Group · Rate Limits

Cme Group Rate Limits

CME Group enforces message-rate governance at the protocol level: per-session MPS caps for iLink order entry, market-data multicast group allocations for MDP 3.0, and platform-wide throttling for the CME DataMine REST surface. Specific numeric ceilings are documented inside the iLink and MDP technical specs distributed to authorized customers.

Cme Group Rate Limits is the machine-readable rate-limit profile for CME Group on the APIs.io network, in the API Commons Rate Limits shape.

It captures 3 rate-limit definitions, measuring messages_per_second and requests_per_minute.

An exhausted limit returns HTTP 429.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

The profile also includes 3 backoff/retry policies defined and response codes documented for throttled and serviceUnavailable.

Tagged areas include Capital Markets, Derivatives, Market Data, and Rate Limiting.

3 Limits Exhausted: HTTP 429
Method: generated, dated 2026-05-05.
Written by API Evangelist on 2026-05-05 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
View Source
Capital MarketsDerivativesMarket DataRate Limiting

Limits

iLink session — Messages Per Second session
messages_per_second
see iLink technical specification
CME Globex enforces a per-session MPS cap on order entry; the cap is allocated per session at onboarding and is documented in the iLink 3 / iLink 2 technical spec.
MDP 3.0 market-data feed subscriber
messages_per_second
not throttled — multicast feed
MDP 3.0 is a UDP multicast feed; consumers are expected to keep up with the wire rate. There is no per-consumer throttling.
CME DataMine REST API account
requests_per_minute
see DataMine API documentation
REST surface for downloading historical / reference data. Throttling is enforced at the platform level.

Policies

iLink MPS allocation
Each iLink session is allocated a Messages-Per-Second cap at onboarding. Exceeding the MPS cap results in messages being rejected with a session-level reject code; sustained over-subscription requires escalation through the customer's clearing firm.
Market-data feed pacing
MDP 3.0 is a real-time multicast feed; consumers must size hardware to keep up with peak message rates. CME publishes capacity guidance for each product group.
Authorized-customer documentation
Detailed message-rate ceilings, retry semantics, and session-level reject codes are documented in the iLink and MDP technical specifications distributed to authorized customers and vendors.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/cme-group-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.