Supported account scope
Binance is read from its Spot account; OKX is read from its trading account. The distinction matters because assets held in unrelated products are not guaranteed to appear in either portfolio total.
Credential setup
Binance uses API key and secret. OKX uses API key, secret and passphrase. In both cases the credential should be dedicated to portfolio tracking and limited to the minimum account-reading permissions.
Normalization differences
The Binance connector handles straightforward non-zero Spot balances, while the OKX connector handles available and frozen trading-account details. Both outputs become the same normalized asset-position model before aggregation.
Using both together
A multi-exchange view is most useful when connection identity remains visible. ChainsFlow keeps per-exchange synchronization state and does not hide a provider error behind an apparently complete combined total.