Add Tag to Item

curl -X POST https://api.getmatter.com/public/v1/items/itm_r9f3a/tags \
  -H "Authorization: Bearer mat_your_token_here" \
  -H "Content-Type: application/json" \
  -d '{"name": "essays"}'

response = requests.post(
    "https://api.getmatter.com/public/v1/items/itm_r9f3a/tags",
    headers={
        "Authorization": f"Bearer {token}",
        "Content-Type": "application/json"
    },
    json={"name": "essays"}
)
tag = response.json()

{
  "object": "tag",
  "id": "tag_n5j2x",
  "name": "essays",
  "item_count": 43,
  "created_at": "2025-01-15T10:00:00Z"
}