Two APIs at a glance
Authentication comparison
The two APIs use different access models. Keys and tokens are not interchangeable between them.Base URLs
REST API:
Orderbook API:
Orderbook WebSocket streams use the same hosts with the
wss:// scheme.
Endpoints by capability
Rate limits
The REST API enforces a monthly request quota per API key, agreed when your key is provisioned, and reports usage throughx-ratelimit-* response headers. See REST API errors and rate limits.
The Orderbook API applies rate and service-protection limits and returns 429 when they are exceeded, plus policy limits on order counts and deadlines. See Orderbook limits and errors. Teams planning sustained high-volume traffic should contact [email protected] to coordinate limits.
Next steps
REST API authentication
Request an API key and make your first authenticated call.
REST API conventions
Understand tinybar, smallest-unit amounts, timestamps, and intervals.
Orderbook API overview
Integrate with the V3 order book, from market data to order placement.
Developer quickstart
Make your first API call in under five minutes.