Rate Limits & API Usage¶
These usage limits are the operating baseline for the upgraded UAT REST V3 validation track.
Use this page while testing the newer V3 payload flow in the upgraded UAT environment.
This page outlines the rate limits and usage guidelines for Nubra’s REST and WebSocket APIs. Adhering to these limits is crucial for stable, uninterrupted algorithmic trading.
API Rate Limits Summary¶
Nubra maintains separate limits for different API categories to ensure high-throughput trading and reliable market data streams.
| API Category | Limit | Notes |
|---|---|---|
| Trading APIs (UAT) | 100 operations/sec | Higher OPS cap for testing and simulation purposes. |
| Historical Data (REST) | 60 requests/min | Intended for backtesting and analysis workloads. |
| Live Market Data (WebSocket) | Weight-based limits | Subscription limits are governed by a weight-based tier system. |
Trading API Limits¶
The core trading APIs (placing, modifying, and canceling orders) are optimized for low-latency execution and are subject to exchange-defined constraints.
- UAT Environment Limit: 100 ops/sec for testing and dry runs.
- Enforcement: Limits are applied per IP address.
- Note: Treat the UAT limit as a validation baseline rather than a production throughput promise.
Market Data Limits¶
Market data access is governed by separate rules for REST and WebSocket APIs.
REST (Historical Data)¶
- Limited to 60 requests per minute.
WebSocket (Live Market Data)¶
- WebSocket subscriptions are governed by a weight-based tier system.
- Each WebSocket stream type consumes a predefined number of weight points.
- The free tier provides a capped amount of total weight per session.
- Clients may subscribe to any combination of streams as long as the total session weight remains within the allowed limit.
- Subscription requests exceeding the allowed weight are rejected with an error.
- Clients must unsubscribe from existing streams to free up weight before adding new subscriptions.
For detailed stream weights and tier limits, refer to the WebSocket Subscription Tiers & Weights documentation.
