---
id: "P:cAlgo.API.MessageSubscription.Subject"
kind: "property"
type: "T:cAlgo.API.MessageSubscription"
url: "https://help.ctrader.com/ctrader-algo/references/Messages/MessageSubscription/Subject/"
---

> Documentation index for agents: https://help.ctrader.com/ctrader-algo/llms.txt · machine index: https://help.ctrader.com/ctrader-algo/api.json

# MessageSubscription.Subject

Member of [MessageSubscription](https://help.ctrader.com/ctrader-algo/references/Messages/MessageSubscription/index.md).

## Subject

GGets message subject.

Environments: Desktop supported · CLI supported · Cloud supported.

C#:

```csharp
string Subject {get;}
```

Python:

```python
messageSubscription.Subject: str
```

### Returns

`string` — 

Available since cAlgo.API 5.2.

### Examples

C#:

```csharp
var subscription = Messages.Subscribe<string>("Signals", args => Print("Received: {0}", args.Message));
Print("Subscribed to subject: {0}", subscription.Subject);
```

Python:

```python
# Not available in Python: subscriptions are created by the generic Messages.Subscribe method
```