FAQ
Is Aeon Feed really free?
Yes. The WebSocket and REST API are free and public with no API key or signup. Fair-use limits apply (10 connections per IP, 200 channels per connection) so the service stays fast for everyone. Donations fund the servers, ongoing maintenance and new features such as cross-exchange arbitrage signals.
Which exchanges are included?
Binance, Bybit, OKX, MEXC, Gate, KuCoin, Bitget, Coinbase, Kraken, Bitfinex, Upbit and Crypto.com. Pairs an exchange does not list are skipped automatically.
How fresh is the data?
Real-time. Each exchange's top of book arrives over its own WebSocket, and every change is pushed to ticker subscribers immediately, typically within a few milliseconds of the exchange message. Cross-exchange aggregates (agg:*) are recomputed once per second.
What data does the feed contain?
Best bid, best ask and their sizes per exchange, plus a cross-exchange summary per pair: median price, best bid and ask with venue, spread, 24h change and 24h volume.
Can I use it in a trading bot or a commercial product?
You can, at your own risk. The data is for informational purposes only and is not investment advice, and the feed comes with no uptime guarantee and no warranty (see the terms of use). For latency-sensitive trading, connect to the exchanges directly; the open-source Rust library behind Aeon Feed makes that easy.
How does it work under the hood?
A Rust server built on the open-source aeon-market-scanner-rs crate keeps one upstream WebSocket per exchange shard, normalises symbols and prices, and serializes each update once before sending it to all subscribers.