get https://{network}.g.alchemy.com/nft/v3//computeRarity
computeRarity - Calculates the rarity of each attribute within an NFT. This endpoint is supported on Ethereum and many L2s, including Polygon, Arbitrum, Optimism, Base, World Chain and more. See the full list of supported networks here.
NOTE
Please note that this endpoint is only available on Ethereum (mainnet) & Polygon (mainnet & mumbai)