> **Documentation Index:** Fetch the complete configuration index at https://help.smelter.ai/en/llms.txt

# Upload custom markup

You can change tags, aspects and sentiment for each mention. Custom markup affects the first method and data in the web interface.

To upload custom markup, use POST method.

Example:

```xml
POST <host>/api/project_markup/myaccount/myproject
```

Pass the following payload:

```json
{
"posts": [
  {
    "mention_id": "cddeb635593ed4ee00",
    "tags": ["report", "customer"],
    "sentiment": "positive"
   },
   { ... }
]
}
```

`mention_id` is a required parameter, what identifies each mention.

No query parameters are required.

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