Websocket to subscribe to traders?

[napindc]

Would you be able to add a websocket, where I can subscribe to 100s of Polymarket wallet addresses at once? And then within milliseconds, I should be able to see what type of trade they made. You can see how other platforms do this here https://docs.predexon.com/websocket/subscriptions#subscriptions

[realfishsam]

Would you be able to add a websocket, where I can subscribe to 100s of Polymarket wallet addresses at once? And then within milliseconds, I should be able to see what type of trade they made. You can see how other platforms do this here https://docs.predexon.com/websocket/subscriptions#subscriptions

Good idea. I'll try to get this done before the weekend. Could you submit a GitHub issue? That would help me get to it faster!

[napindc]

sure here :) #43

tysm!

[adamantmm]

Wallet-trade websockets are a different animal from market-data sockets — you are fan-out multiplexing hundreds of address filters, not one order book.

If this gets built, two things I would design for up front:

1. Snapshot + delta — on subscribe, send recent fills for that address, then stream; otherwise clients race the first event.
2. Backpressure / batching — 100s of busy wallets will burst; coalesce per-address or per-interval rather than one WS frame per fill, or consumers fall behind and reconnect storms follow.

For arb specifically, also expose a server-side clock and the Polymarket event id on each fill so you can align against your own book timestamps. Without that, “milliseconds” is hard to reason about across processes.