# How do I test for a player at specific coordinates?

If I do:

``````/testfor @p[x=,y=,z=,r=]
``````

It says:

The entity UUID is in an invalid format.

You're scanning for the nearest player, your should scan for all the players.

## Solution

``````/testfor @a[x=X,y=Y,z=Z,r=R]
``````

Where:

• X the x location
• Y the y location
• Z the z location

For example:

``````/testfor @a[x=64,y=10,z=64,r=5]
``````

(Search for players on coordinates 64,64 at height 10, with a radius of 5 blocks)

## Variables

Specify the location:

• @p nearest player
• @r random player
• @a all players
• @e all entities

Specify the values:

• x, y, z coordinate
• r, rm radius (max, min)
• m game mode
• c count
• l, lm experience level (max, min)
• score_name max score
• score_name_min min score
• team team name
• name entity name
• dx, dy, dz volume dimensions
• rx, rxm vertical rotation (max, min)
• ry, rym horizontal rotation (max, min)
• type entity type

## Examples:

To test if Alice is online:

``````testfor Alice
``````

To count the number of players in survival mode within a 3-block radius of (0,64,0):

``````testfor @a[0,64,0,3,m=0]
``````

To count the number of players currently flying:

``````testfor @a {abilities:{flying:1b}}
``````

To count the number of zombies within a 20-block radius of (0,64,0):

``````testfor @e[0,64,0,20,type=Zombie]
``````

Source

• This does not really answer the question. He wants to detect himself.
– 54D
Commented Dec 29, 2014 at 11:56
• His title states that he wants to test for a player at specific coordinates, I cannot find where he states that he wants to find himself. Commented Dec 29, 2014 at 12:01
• Isn't he himself a player?
– 54D
Commented Dec 29, 2014 at 12:01
• Correct, He is a player as well. The solution I propose (which scans all players) will include him. Commented Dec 29, 2014 at 12:04
• @ArceusMaster0493 If the original intention is scanning himself at coordinates (so checking if he's near coordinates), the command should be: `testfor @a[64,64,10,5,name=playername]`. I'm not twisting his original intention, I'm just answering his question which states: `How do I test for a player at specific coordinates?`, which not specifies himself. Commented Dec 29, 2014 at 12:17

In newer versions of minecraft you can use something like this:

``````/execute as @a[x=100,y=100,z=100,dx=0,dy=0,dz=0] at @s run <command>
``````

You need to specify delta values for this to work. The coordinates defined with `x y z` are one corner of the specified area, the delta values `dx dy dz` define how many blocks the second corner is away from the first corner.

You can also use this command:

``````/execute positioned 100 100 100 as @a[distance=..1] at @s run <command>
``````

This will execute your command as all players who are within a 1 block radius from the coordinates `100 100 100`.

• I tried the first command in chat, it worked fine. However, when I tried the exact same command in a command block, nothing happened. Strange. Commented Aug 24, 2019 at 1:00
• @Diriector_Doc what exact command did you try to run? The first command should in most cases work the same in a command block as in chat.
– user232393
Commented Aug 24, 2019 at 10:06
• Never mind. I got it to work. Even though it was a repeating command block that was always active, I needed to provide a block update. Then it worked fine. Commented Aug 24, 2019 at 19:06

I've noticed that the invalid UUID doesn't always mean that the format is wrong, as I've gotten the error a lot when the format was correct, but no entity was detected. Make sure you are in the area you've specified, and then retry your command.

You would use the `testfor` command like so:

``````/testfor @a[x=-682,y=4,z=-188,dx=0]
``````

You put @p[x,y,z,r] this considers the whole section as the identification of the player try @p [x,y,z,r].