listlabels ( "purpose" )

The listlabels RPC returns the list of all labels, or labels that are assigned to addresses with a specific purpose.

*bitcoin-cli help listlabels

listlabels ( "purpose" )

Returns the list of all labels, or labels that are assigned to addresses with a specific purpose.

Arguments:
1. "purpose"    (string, optional) Address purpose to list labels for ('send','receive'). An empty string is the same as not providing this argument.

Result:
[               (json array of string)
  "label",      (string) Label name
  ...
]

Examples:

List all labels
> bitcoin-cli listlabels 

List labels that have receiving addresses
> bitcoin-cli listlabels receive

List labels that have sending addresses
> bitcoin-cli listlabels send

As json rpc call
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "listlabels", "params": [receive] }' -H 'content-type: text/plain;' http://127.0.0.1:8332/