The KEEP token contract address in mainnet is 0x85eee30c52b0b379b046fb0f85f4f3dc3009afec. You can find more info on Etherscan.
Keep’s native token, KEEP, powers the network and supports all the apps that are and will be built on it. This article reviews:
This Messari section presents the usage details of the KEEP token.
What is Keep Network? | history, roadmap, usage, team, supply | Messari
Not exclusive on KEEP, but quite an interesting article nevertheless on utility tokens such as KEEP.