> ## Documentation Index
> Fetch the complete documentation index at: https://docsuncv2.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# getscriptfromthread

```luau theme={null}
getscriptfromthread(t: thread): Instance?
```

Game-side threads spawned by a running LocalScript map back to that LocalScript Instance.

The common source of valid threads is the table returned by `getreg(){:luau}`. Pass each thread from the registry to `getscriptfromthread{:luau}` and you get the owning script back. Multiple threads can map to the same script - one LocalScript can spawn many coroutines, and each one points to that same LocalScript.

Most commonly used inside a hook to figure out which game script triggered the call, by passing `coroutine.running(){:luau}` from the hook body.

Game-side threads spawned by a running LocalScript map back to that LocalScript Instance.

The common source of valid threads is the table returned by `getreg()`. Pass each thread from the registry to `getscriptfromthread` and you get the owning script back. Multiple threads can map to the same script - one LocalScript can spawn many coroutines, and each one points to that same LocalScript.

Most commonly used inside a hook to figure out which game script triggered the call, by passing `coroutine.running()` from the hook body.

## Parameters

| Parameter | Type     | Description                |
| --------- | -------- | -------------------------- |
| `t`       | `thread` | The Lua thread to look up. |

## Returns

| Parameter | Type     | Description                |
| --------- | -------- | -------------------------- |
| `t`       | `thread` | The Lua thread to look up. |

`[LuaSourceContainer](https://create.roblox.com/docs/reference/engine/classes/LuaSourceContainer)?` - the script that owns the given thread, or `nil` if the thread has no associated script. `Instance?{:luau}` - the script that owns `t{:luau}`, or `nil{:luau}` if no script owns it. Executor-created threads always return `nil{:luau}`.

## Example

Print the owning script for every thread `getreg(){:luau}` returns. Threads with no game-side owner are skipped.

````text theme={null}

Maps a Lua thread back to the script Instance it belongs to.

```luau
getscriptfromthread(t: thread): Instance?
````

Game-side threads spawned by a running LocalScript map back to that LocalScript Instance.

The common source of valid threads is the table returned by `getreg()`. Pass each thread from the registry to `getscriptfromthread` and you get the owning script back. Multiple threads can map to the same script - one LocalScript can spawn many coroutines, and each one points to that same LocalScript.

Most commonly used inside a hook to figure out which game script triggered the call, by passing `coroutine.running()` from the hook body.

## Parameters

| Parameter | Type     | Description                |
| --------- | -------- | -------------------------- |
| `t`       | `thread` | The Lua thread to look up. |

## Returns

`Instance?` - the script that owns `t`, or `nil` if no script owns it. Executor-created threads always return `nil`.

## Example

<CodeGroup>
  ```luau Example 1 theme={null}
  getscriptfromthread(t: thread): Instance?
  ```

  ```luau Example 2 theme={null}
  for _, item in ipairs(getreg()) do -- this would've been easier if getallthreads() existed :(
      if type(item) == "thread" then
          local owner = getscriptfromthread(item)
          if owner then
              print(`{owner:GetFullName()}`)
          end
      end
  end
  ```
</CodeGroup>

<Tip>
  `gettenv(t).script` returns the same Instance as `getscriptfromthread(t)` for any matching thread. Useful when you already have the thread's env table on hand and don't want a second call.
</Tip>

## Example

Print the owning script for every thread `getreg()` returns. Threads with no game-side owner are skipped.

<CodeGroup>
  ```luau Example 1 theme={null}
  -- getscriptfromthread(t: thread): Instance?
  ```

  ```luau Example 2 theme={null}
  for _, item in ipairs(getreg()) do -- this would've been easier if getallthreads() existed :(
      if type(item) == "thread" then
          local owner = getscriptfromthread(item)
          if owner then
              print(`{owner:GetFullName()}`)
          end
      end
  end
  ```
</CodeGroup>

<Tip>
  `gettenv(t).script` returns the same Instance as `getscriptfromthread(t)` for any matching thread. Useful when you already have the thread's env table on hand and don't want a second call.
</Tip>