20 Compute Units.
Reference: Here
Parameters
feature(string, optional) The unique ID of an amendment, as hexadecimal, or the short name of the amendment. If provided, limits the response to one amendment. Otherwise, the response lists all amendments.
Returns
features(object) A map of amendment IDs to amendment objects. Each amendment object hasname(may be omitted),enabled(whether the amendment is currently enabled in the latest ledger) andsupported(whether the server knows how to apply it).ledger_hash,ledger_index,validatedThe ledger version the amendment status was read from.
{"id":1,"command":"feature"} to wss://mainnet.xrpl.validationcloud.io/v1/<YOUR_API_KEY_HERE>.
Without a feature filter the full response lists every amendment (roughly 15 KB). The example above is trimmed to the first two entries.