Rate Limits

Order Entry Limits

The FIX Order Entry API rate limit is 50 requests per rolling second per session and up to 100 messages per second in bursts.

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Rolling second: the clock starts when the first command is sent. We use a lazy-fill token bucket implementation.

A maximum of 7 connections can be established per profile. See FIX Best Practices

Market Data Limits

The FIX Market Data API is limited to a single connection per API key. It does not use FIX order entry rate limits (connections, rps, burst rps).