GET /v2/amplify/vaults). Three dedicated helpers cover what isn’t on the discovery response: previewing the fee for a specific redemption, reading up-to-the-block supply-cap utilization, and reading a user’s current position.
None of these requires an RPC connection — the backend reads the indexer and on-chain state for you.
Dedicated Helpers
Fields Returned by /v2/amplify/vaults
The following per-deployment fields are already present on the discovery response — there are no separate endpoints for them:
Fetch them once during account discovery and cache them client-side; they change rarely.