Meshtastic (LoRa) sniffer

Hi, is there such a thing as a Meshtastic (LoRa) sniffer?

Are you looking for something like Wireshark?
My understanding is that LoRa is encrypted, so you need to know the key to look at the payload.

LoRaWAN® Is Secure (but Implementation Matters) - LoRa Alliance®
Now available: LoRa captures in Wireshark - TTN Network and Services - The Things Network

What are you trying to find?