Fetching VIX Chains: "forbidden: insufficient grants"

Hi,

I’m trying to build VIX fetch into my trading algo. I can see the ~live VIX values and chains in the Alpaca UI - but when trying to fetch the VIX endpoint I get errored (below). My account is approved for options and I’ve signed the agreement - so why would I be able to see the VIX data / chain in the UI but not the API?

GET https://data.alpaca.markets/v1beta1/indices/latest/values?index_symbols=VIX
HTTP 403
{“message”:“forbidden: insufficient grants”}

GET data.alpaca.markets/v1beta1/indices/values?index_symbols=VIX&start=2026-10-20T00:00:00Z&limit=5
HTTP 403
{“message”:“forbidden: insufficient grants”}

GET data.alpaca.markets/v1beta1/options/snapshots/VIX?feed=opra&limit=1
HTTP 403
{“message”:“OPRA agreement is not signed”}