curl --request GET \
  --url https://api.formo.so/v0/boards/{boardId}/charts \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "cht_x1y2z3a4b5c6",
      "project_id": "proj_abc123",
      "board_id": "brd_a1b2c3d4e5f6",
      "chart_type": "line",
      "title": "Daily revenue (last 30 days)",
      "description": null,
      "query": "SELECT toDate(timestamp) AS day, sum(revenue) AS revenue FROM events WHERE event = 'transaction' AND timestamp >= now() - INTERVAL 30 DAY GROUP BY day ORDER BY day",
      "x_axis": "day",
      "y_axis": [
        "revenue"
      ],
      "group_by": null,
      "steps": null,
      "settings": null
    }
  ],
  "page": 1,
  "size": 100,
  "total": 1,
  "has_more": false,
  "board": {
    "id": "brd_a1b2c3d4e5f6",
    "project_id": "proj_abc123",
    "title": "Revenue Dashboard",
    "description": "Weekly revenue, conversion, and retention metrics.",
    "enabled": false
  }
}