Telemetry

The telemetry data collection screen.

Telemetry Data Collection (formerly called Snooper) is a feature that allows Mojang Studios to collect telemetry data on the player, from either the client or the server. On the telemetry data collection screen, the player can view the collected data and choose between sending a required "minimal" amount of data or an extended "all". It also includes a link to the stored data files.

This feature was removed globally in 18w21a because of the European Union's General Data Protection Regulations (GDPR). It was re-added in 21w38a to "improve players' experience", and since then it is no longer possible to disable telemetry data collection completely without client modifications.

Telemetry Data Collection

On World Load

Tag	Type	Description	Example
type	string	Whether the data relates to a world being loaded, a world being unloaded or the loading time of a world.	"world_loaded", "world_unloaded" or "world_load_times"
value	object	Contains the data listed below.	---
Tag	Type	Description	Example
user_id	string	Contains the current user's Xbox Live ID (XUID) on decimal form.	"0123456789012345"
client_id	string	A client ID that does not change when the game is restarted.	"AB00cDef11GhIJ22kLmn33OpQR44sTuv55WxYZ"
minecraft_session_id	string	A session ID (UUID) that changes when the game is restarted.	"00112233-4455-6677-8899-aabbccddeeff"
game_version	string	The currently played Minecraft version.	"1.19.3", "23w05a", etc.
operating_system	string	The operating system in use.	"windows"
platform	string	Platform used.	"Windows 10"
client_modded	boolean	Whether or not the client is modded.	true or false
event_timestamp_utc	string	Time of data collection.	"2023-01-25T18:35:44.123456700Z"
opt_in	boolean	Whether the user has given consent to full telemetry data collection.	true or false
world_session_id	string	A world session ID (UUID) that changes for every world load.	"00112233-4455-6677-8899-aabbccddeeff"
server_modded	boolean	Whether or not the server is modded.	true or false
server_type	string	If the world loaded is a local world or a server.	"local" or "server"
game_mode	string	What gamemode the player is in at the time of entering the world.	"adventure", "creative", "spectator" or "survival"

On World Unload

Tag	Type	Description	Example
type	string	Whether the data relates to a world being loaded, a world being unloaded or the loading time of a world.	"world_loaded", "world_unloaded" or "world_load_times"
value	object	Contains the data listed below.	---
Tag	Type	Description	Example
user_id	string	Contains the current user's Xbox Live ID (XUID) on decimal form.	"0123456789012345"
client_id	string	A client ID that does not change when the game is restarted.	"AB00cDef11GhIJ22kLmn33OpQR44sTuv55WxYZ"
minecraft_session_id	string	A session ID (UUID) that changes when the game is restarted.	"00112233-4455-6677-8899-aabbccddeeff"
game_version	string	The currently played Minecraft version.	"1.19.3", "23w05a", etc.
operating_system	string	The operating system in use.	"windows"
platform	string	Platform used.	"Windows 10"
client_modded	boolean	Whether or not the client is modded.	true or false
event_timestamp_utc	string	Time of data collection.	"2023-01-25T18:35:44.123456700Z"
opt_in	boolean	Whether the user has given consent to full telemetry data collection.	true or false
world_session_id	string	A world session ID (UUID) that changes for every world load.	"00112233-4455-6677-8899-aabbccddeeff"
server_modded	boolean	Whether or not the server is modded.	true or false
server_type	string	If the world loaded is a local world or a server.	"local" or "server"
seconds_since_load	integer	Seconds passed since the world was loaded.	10, 5, 3, etc.
ticks_since_load	integer	Ticks passed since the world was loaded.	60, 30, 15, etc.

World Load Time

Tag	Type	Description	Example
type	string	Whether the data relates to a world being loaded, a world being unloaded or the loading time of a world.	"world_loaded", "world_unloaded" or "world_load_times"
value	object	Contains the data listed below.	---
Tag	Type	Description	Example
user_id	string	Contains the current user's Xbox Live ID (XUID) on decimal form.	"0123456789012345"
client_id	string	A client ID that does not change when the game is restarted.	"AB00cDef11GhIJ22kLmn33OpQR44sTuv55WxYZ"
minecraft_session_id	string	A session ID (UUID) that changes when the game is restarted.	"00112233-4455-6677-8899-aabbccddeeff"
game_version	string	The currently played Minecraft version.	"1.19.3", "23w05a", etc.
operating_system	string	The operating system in use.	"windows"
platform	string	Platform used.	"Windows 10"
client_modded	boolean	Whether or not the client is modded.	true or false
event_timestamp_utc	string	Time of data collection.	"2023-01-25T18:35:44.123456700Z"
opt_in	boolean	Whether the user has given consent to full telemetry data collection.	true or false
world_session_id	string	A world session ID (UUID) that changes for every world load.	"00112233-4455-6677-8899-aabbccddeeff"
server_modded	boolean	Whether or not the server is modded.	true or false
server_type	string	If the world loaded is a local world or a server.	"local" or "server"
world_load_time_ms	integer	Time it took to fully load the world	8765, 5432, 4321, etc.
new_world	boolean	Whether or not the loaded world was a newly created world.	true or false

Fields

Client Fields (C)

Name	Type	Notes
client_brand	String
cpu_cores	integer
current_action	String
display_frequency	integer
display_type	String	`windowed` or `fullscreen`
endianness	String	`big` or `little` endianness
fps	integer
gl_max_texture_size	integer
java_version	String
jvm_arg[...]	String	Launch arguments
jvm_args	integer	Number of launch arguments
launched_version	String
memory_free	integer
memory_max	integer
memory_total	integer
opengl_vendor	String
opengl_version	String
os_architecture	String
os_name	String	Does not include Linux distribution name in most cases.
os_version	String
resource_packs	integer
run_time	integer
snooper_partner	UUID
snooper_token	UUID
version	String
vsync_enabled	boolean

GL Caps

OpenGL keys for the client.

History

Java Edition
1.3.1			12w30a				Added Snooper Settings screen.
1.7.4			13w48a				Upgraded protocol to version 2.
1.11			16w35a				Changed the Snooper Setting screen's name and description.
1.13			18w21a				Snooper is now forced off. The menu is still visible, but the button is disabled.
1.14			19w11a				Removed the Snooper Settings screen, but it is still configurable in options.txt.
1.18			21w38a				Re-added Snooper, but without its UI.
1.19.3			22w46a				Added Telemetry Data screen in the options.
1.20			23w18a				Added new property: launcher_name, sent with every event.
							Added new property realms_map_content to event world_loaded.
							Added new optional event advancement_made.
							Added new optional event game_load_times.
1.20.2			23w31a				Added a button to the Telemetry Data Collection Screen that links to the Microsoft Privacy Statement.

Gallery

• 
  Snooper Settings before 1.11.
• 
  Snooper Settings before it was removed in 1.14.