curl --request POST \
  --url https://api.iotools.cloud/v1/tool/distance-between-two-points-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "x1": "1",
  "y1": "2",
  "x2": "4",
  "y2": "6"
}
'

{
  "tool": "distance-between-two-points-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "distance": "5",
    "midpoint": "(2.5, 4)",
    "steps": "Distance = √[(x₂ − x₁)² + (y₂ − y₁)²] = √[(4 − 1)² + (6 − 2)²] = √[(3)² + (4)²] = 5\nMidpoint = ((x₁ + x₂)/2, (y₁ + y₂)/2) = ((1 + 4)/2, (2 + 6)/2) = (2.5, 4)"
  },
  "credits_used": 5,
  "credits_remaining": null
}