The ./bin/swapcli price-feed command is returning an error right now (execution reverted). I looked into it and while the ETH/USD price feed is working, the TestGetXMRUSDPrice_mainnet test which calls pricefeed.GetXMRUSDPrice is broken.
Optimism has a free https://mainnet.optimism.io RPC endpoint that is rate limited, but I imagine that the rate limit is high enough that users would not trigger it doing occasional price feed requests.
The
./bin/swapcli price-feedcommand is returning an error right now (execution reverted). I looked into it and while the ETH/USD price feed is working, theTestGetXMRUSDPrice_mainnettest which callspricefeed.GetXMRUSDPriceis broken.Chainlink appears to have just removed the webpage for the feed without leaving any information on why/when it was taken down: https://data.chain.link/ethereum/mainnet/crypto-usd/xmr-usd
The price feed still exists on Optimism if we want to pull it from there: https://data.chain.link/optimism/mainnet/crypto-usd/xmr-usd
Optimism has a free https://mainnet.optimism.io RPC endpoint that is rate limited, but I imagine that the rate limit is high enough that users would not trigger it doing occasional price feed requests.
Other options would include Kraken's price feeds:
Descriptions of the response field names can be found here: https://docs.kraken.com/rest/#tag/Market-Data/operation/getTickerInformation