Which v2 endpoint should I use?
Can I use v2 with a FREE key?
Yes, at wss://ws.newlistings.pro/v2/full only. FREE keys cannot use /v2/fast or Full history. See Keys for delays and fields by plan.
Does v2 have history or replay?
STARTER and PRO can use the Historical API, with query windows of 30 and 365 days. Fast has no history endpoint. Neither WebSocket replays missed events.
What happens when my connection drops?
For transient failures, reconnect with backoff starting at 1 second and capped at 30 seconds. Honor Retry-After on HTTP 429 responses. Correct invalid requests and expired credentials before retrying. Neither WebSocket replays missed events. See Connection lifecycle.
Can I filter events?
Yes. Both endpoints support exchange, data_type, and username. Full also supports market_type, which can be combined with data_type. See Filters and coverage.
How many v2 connections can I open?
Three simultaneous sockets per endpoint, key, and IP. See Keys for distinct-IP allowances. The READY message reports the settings applied to your key.
Does NLF guarantee complete coverage?
No. Exchanges change pages, formats, APIs, and announcement flows without warning, so events can be missed. Treat the feed as one input in your system and design for gaps.
Does NLF execute orders?
No. NLF only streams data. It does not place or manage orders. You build and run your own execution system.
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