Changelog Oct 28, 2026

Live WebSocket feed: full documentation

The live feed in every self-serve plan now has its own reference: connecting, channels, messages, limits, errors and reconnecting, with Python, CLI and wscat examples.

The WebSocket feed is documented at API Docs: Live WebSocket Feed.

Connecting: wss://stream.aperiodic.io/v1/stream, with your API key in the X-API-KEY header, never in the URL. Frames are JSON. The feed is for servers, notebooks and scripts, since browsers cannot set the header.
Channels: one dataset on one exchange at one interval, named like ohlcv.binance-futures.1m, with Atlas symbol IDs.
Quickstarts: the Python client (pip install "aperiodic[stream]"), the CLI (aperiodic stream) and any WebSocket client. The Python client and the CLI reconnect and resubscribe on their own.
Limits and errors: what each refused connection's status means, how many connections a plan holds, at-most-once delivery, and how to reconnect.

Replay No. 05: the Binance hack, in 15-second bars

Oct 30, 2026

Replays: four market events, minute by minute

Oct 28, 2026