> For the complete documentation index, see [llms.txt](https://sdk.venly.io/sdk-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sdk.venly.io/sdk-reference/c-sdk-v3/function-references/token/token-metadata/adderc1155tokenattribute.md).

# AddErc1155TokenAttribute

### Description

This endpoint is used to add attributes to a specific NFT.

{% code overflow="wrap" %}

```csharp
public static VyTask<VyMetadataDto> AddErc1155TokenAttribute(eVyChain chain, string contractAddress, int tokenId, VyErc1155TokenAttributeDto reqParams)
```

{% endcode %}

{% tabs %}
{% tab title="Details" %}
**Parameters**

| chain           | [eVyChain](/sdk-reference/c-sdk-v3/object-references/enum/evychain.md)                                      | The blockchain of the NFT collection |
| --------------- | ----------------------------------------------------------------------------------------------------------- | ------------------------------------ |
| contractAddress | string                                                                                                      | The NFT contract address             |
| tokenId         | int                                                                                                         | The \`ID\` of the token              |
| reqParams       | [VyErc1155TokenAttributeDto](/sdk-reference/c-sdk-v3/object-references/token/vyerc1155tokenattributedto.md) | Request data for the operation       |

**Returns**

VyTask<[VyMetadataDto](/sdk-reference/c-sdk-v3/object-references/token/vymetadatadto.md)>
{% endtab %}
{% endtabs %}