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A hub is an isolation domain. Every market is addressed as:
Never identify a market by asset address alone. The same token on two hubs is two markets: separate indexes, cash, revenue, debt, and bad-debt socialization.

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What the hub gives you

  • One pool contract, but separate accounting rows per market
  • Its own interest-rate curve, reserve factor, and flash-loan settings, stored in pool Params(HubAssetKey)
  • Its own indexes, cash, revenue, and bad-debt write-downs
Caps are not set here. Supply and borrow caps live on the spoke listing (SpokeAssetConfig), so two spokes can cap the same market differently. See Spokes.

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Discover markets

  1. Read deployed controller / pool addresses from Addresses (do not hardcode).
  2. Resolve listed hub assets from controller/pool views used by your indexer or SDK.
  3. Always pass both hub_id and asset into supply, borrow, withdraw, and repay.