Use these endpoints to look up some basic information about axies.
This will give you the basic GraphQL response from the Axie server.
https://axie.sirsean.workers.dev/info?id={axieId}
This will look up comparable axies in the marketplace to determine the most likely floor price for the given axie.
https://axie.sirsean.workers.dev/comp?id={axieId}
For example:
http://axie.sirsean.workers.dev/comp?id=103248
{"floor":0.30000000000000004}