# Create Topic

POST

/

topics

:::code-group
```typescript title="Node.js"
import { Resend } from 'resend';

const resend = new Resend('re_xxxxxxxxx');

const { data, error } = await resend.topics.create({
  name: 'Weekly Newsletter',
  defaultSubscription: 'opt_in',
});
```

```php title="PHP"
$resend = Resend::client('re_xxxxxxxxx');

$resend->topics->create([
  'name' => 'Weekly Newsletter',
  'default_subscription' => 'opt_in',
]);
```

```python title="Python"
import resend

resend.api_key = "re_xxxxxxxxx"

resend.Topics.create({
    "name": "Weekly Newsletter",
    "default_subscription": "opt_in",
    "description": "Subscribe to our weekly newsletter for updates",
})
```

```ruby title="Ruby"
require "resend"

Resend.api_key = "re_xxxxxxxxx"

Resend::Topics.create(
  name: "Weekly Newsletter",
  default_subscription: "opt_in"
)
```

```go title="Go"
package main

import (
	"context"

	"github.com/resend/resend-go/v4"
)

func main() {
	client := resend.NewClient("re_xxxxxxxxx")

	client.Topics.CreateWithContext(context.TODO(), &resend.CreateTopicRequest{
		Name:                "Weekly Newsletter",
		DefaultSubscription: resend.DefaultSubscriptionOptIn,
	})
}
```

```rust title="Rust"
use resend_rs::{
  types::{CreateTopicOptions, SubscriptionType},
  Resend, Result,
};

#[tokio::main]
async fn main() -> Result<()> {
  let resend = Resend::new("re_xxxxxxxxx");

  let opts = CreateTopicOptions::new("Weekly Newsletter", SubscriptionType::OptIn);
  let _topic = resend.topics.create(opts).await?;

  Ok(())
}
```

```java title="Java"
import com.resend.Resend;
import com.resend.core.exception.ResendException;
import com.resend.services.topics.model.CreateTopicOptions;
import com.resend.services.topics.model.CreateTopicResponseSuccess;

public class Main {
  public static void main(String[] args) throws ResendException {
    Resend resend = new Resend("re_xxxxxxxxx");

    CreateTopicOptions createTopicOptions = CreateTopicOptions.builder()
      .name("Weekly Newsletter")
      .defaultSubscription("opt_in")
      .build();

    CreateTopicResponseSuccess response = resend.topics().create(createTopicOptions);
  }
}
```

```csharp title=".NET"
using Resend;

IResend resend = ResendClient.Create( "re_xxxxxxxxx" ); // Or from DI

var resp = await resend.TopicCreateAsync( new TopicData() {
  Name = "Weekly Newsletter",
  Description = "Weekly newsletter for our subscribers",
  SubscriptionDefault = SubscriptionType.OptIn,
} );
Console.WriteLine( "Topic Id={0}", resp.Content );
```

```shellscript title="cURL"
curl -X POST 'https://api.resend.com/topics' \
     -H 'Authorization: Bearer re_xxxxxxxxx' \
     -H 'Content-Type: application/json' \
     -d $'{
  "name": "Weekly Newsletter",
  "default_subscription": "opt_in"
}'
```

```shellscript title="CLI"
resend topics create --name "Weekly Newsletter" --default-subscription opt_in
```
:::

:::code-group
```json title="Response"
{
  "object": "topic",
  "id": "b6d24b8e-af0b-4c3c-be0c-359bbd97381e"
}
```
:::

## Body Parameters

string

required

The topic name. Max length is `50` characters.

string

The topic description. Max length is `200` characters.

:::code-group
```typescript title="Node.js"
import { Resend } from 'resend';

const resend = new Resend('re_xxxxxxxxx');

const { data, error } = await resend.topics.create({
  name: 'Weekly Newsletter',
  defaultSubscription: 'opt_in',
});
```

```php title="PHP"
$resend = Resend::client('re_xxxxxxxxx');

$resend->topics->create([
  'name' => 'Weekly Newsletter',
  'default_subscription' => 'opt_in',
]);
```

```python title="Python"
import resend

resend.api_key = "re_xxxxxxxxx"

resend.Topics.create({
    "name": "Weekly Newsletter",
    "default_subscription": "opt_in",
    "description": "Subscribe to our weekly newsletter for updates",
})
```

```ruby title="Ruby"
require "resend"

Resend.api_key = "re_xxxxxxxxx"

Resend::Topics.create(
  name: "Weekly Newsletter",
  default_subscription: "opt_in"
)
```

```go title="Go"
package main

import (
	"context"

	"github.com/resend/resend-go/v4"
)

func main() {
	client := resend.NewClient("re_xxxxxxxxx")

	client.Topics.CreateWithContext(context.TODO(), &resend.CreateTopicRequest{
		Name:                "Weekly Newsletter",
		DefaultSubscription: resend.DefaultSubscriptionOptIn,
	})
}
```

```rust title="Rust"
use resend_rs::{
  types::{CreateTopicOptions, SubscriptionType},
  Resend, Result,
};

#[tokio::main]
async fn main() -> Result<()> {
  let resend = Resend::new("re_xxxxxxxxx");

  let opts = CreateTopicOptions::new("Weekly Newsletter", SubscriptionType::OptIn);
  let _topic = resend.topics.create(opts).await?;

  Ok(())
}
```

```java title="Java"
import com.resend.Resend;
import com.resend.core.exception.ResendException;
import com.resend.services.topics.model.CreateTopicOptions;
import com.resend.services.topics.model.CreateTopicResponseSuccess;

public class Main {
  public static void main(String[] args) throws ResendException {
    Resend resend = new Resend("re_xxxxxxxxx");

    CreateTopicOptions createTopicOptions = CreateTopicOptions.builder()
      .name("Weekly Newsletter")
      .defaultSubscription("opt_in")
      .build();

    CreateTopicResponseSuccess response = resend.topics().create(createTopicOptions);
  }
}
```

```csharp title=".NET"
using Resend;

IResend resend = ResendClient.Create( "re_xxxxxxxxx" ); // Or from DI

var resp = await resend.TopicCreateAsync( new TopicData() {
  Name = "Weekly Newsletter",
  Description = "Weekly newsletter for our subscribers",
  SubscriptionDefault = SubscriptionType.OptIn,
} );
Console.WriteLine( "Topic Id={0}", resp.Content );
```

```shellscript title="cURL"
curl -X POST 'https://api.resend.com/topics' \
     -H 'Authorization: Bearer re_xxxxxxxxx' \
     -H 'Content-Type: application/json' \
     -d $'{
  "name": "Weekly Newsletter",
  "default_subscription": "opt_in"
}'
```

```shellscript title="CLI"
resend topics create --name "Weekly Newsletter" --default-subscription opt_in
```
:::

```json
{
  "object": "topic",
  "id": "b6d24b8e-af0b-4c3c-be0c-359bbd97381e"
}
```

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## Related pages

- [Account Management](./account-management-index.md)
- [API Keys](./api-keys-2-index.md)
- [API Keys](./api-keys-index.md)
- [API Reference](./api-reference-index.md)
- [AudiencesDEPRECATED](./audiencesdeprecated-index.md)
- [Authorized Apps](./authorized-apps-index.md)
- [Automations](./automations-index.md)
- [Broadcasts](./broadcasts-index.md)
- [Build with AI](./build-with-ai-index.md)
- [Changelog](../changelog.md)

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