Two APIs at a glance
Authentication comparison
The two APIs use different access models. The REST API needs no credential; only Orderbook account endpoints do.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 applies per-IP rate limits 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 access
Call the REST API with no API key and read its rate-limit headers.
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.