Returns a boolean status for one KV key without loading the stored value.

Status commands return a scalar or compact status payload and do not mutate database state.

Examples

Check whether a key currently has a visible value.

CLI

$ strata kv put k v
$ strata kv exists k
$ strata kv exists absent

Wire

{"key":"aw==","type":"kv_put","value":"dg=="}
{"key":"aw==","type":"kv_exists"}
{"key":"YWJzZW50","type":"kv_exists"}

Parameters

Name	Type	Required	Description
key	Bytes	yes	Key to check.

Plus the optional scope: branch and space (default to the session branch and the "default" space).

Returns

StatusValue<bool>.

Errors

• failed_precondition.engine.runtime_closed
• not_found.engine.branch
• invalid_argument.engine.product_space
• invalid_argument.engine.kv_key

Invocation

• CLI: strata kv exists
• Wire type: kv_exists