---
name: "Arma 3: meta.cpp"
type: topic
source: https://community.bistudio.com/wiki/Arma_3:_meta.cpp
revid: 373435
updated: 2025-05-08T11:27:12Z
---

# Arma 3: meta.cpp

Arma 3 v1.54

**Meta.cpp** file contains additional information about mods published on Steam Workshop.
This file is automatically created when a mod is published by [Arma 3: Publisher](../topics/Arma_3~3A_Publisher.md) to Steam Workshop.

#### Attributes

**meta.cpp attributes**

| Key | Required | Meaning |
|---|---|---|
| `protocol` | Yes | Version of meta.cpp file content. |
| `publishedId` | No | Steam Workshop identifier for the mod. If this id is filled in on a server, [Arma 3: Launcher](../topics/Launcher.md) set up this mod when user connects to that server. |
| `name` | No | Steam Workshop item name. |
| `timestamp` | No | Time of last mod update in [.NET Framework ticks time format](https://docs.microsoft.com/en-us/dotnet/api/system.datetime.tobinary?view=netcore-3.1) (10,000 ticks = 1 millisecond). |
| `hashOverride` | No | Mod hash override that is send by the server to the client instead of the hash calculated from real mod. The override hash can be calculated by [ModHashCalculator](../topics/ModHashCalculator.md). |

#### Example

```cpp
/// Version of meta.cpp content
protocol = 1;

/// Steam Workshop item id
publishedid = 123456790;

/// Steam Workshop item name
name = "Splendid mod";

/// Time of last update of the Steam Workshop Item (in .NET Framework time format)
timestamp = 9876432101234567890;

/// Mod hash that is send by the server to the client instead of calculated hash)
hashOverride = 1234567890;
```

<sub>Source: [BI Community Wiki — Arma 3: meta.cpp](https://community.bistudio.com/wiki/Arma_3:_meta.cpp) (revision 373435).</sub>