Subscription cap details
Each connection may hold up to 200 subscription slots. A slot is consumed by:-
each distinct market you hold any of
orderbook/trades/ticker/limit_orderson (all of those on one market share a single slot), -
each distinct market you hold a
klinesubscription on, -
each distinct market you hold a
mid_klinesubscription on, -
each distinct wallet you hold
user_orders/user_fillson.
mini_tickers, market_updates) are effectively free, they
share a single internal slot between them no matter how many you hold, so
they never meaningfully eat into your 200 (worst case, holding any global
channel costs one slot total). When a new market/wallet would exceed the cap,
the offending subscribe is rejected with SUBSCRIPTION_LIMIT and nothing new is
added; existing subscriptions are unaffected. Unsubscribe from something to free
a slot.
With a 200-slot budget and per-market channels sharing one slot per market, a
single connection can follow up to ~200 markets’ full order-flow at once. If you need more,
open a second connection (subject to the per-IP cap of 50).
Transaction status feed
The relay’s feed (wss://send.archer.exchange/v1/ws) has its own limits. See Transaction status feed.