curl --request POST \
  --url https://api.iotools.cloud/v1/tool/beam-deflection-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "beamType": "simply-supported",
  "material": "structural-steel",
  "elasticModulus": "",
  "momentOfInertia": "8360000",
  "span": "3",
  "udl": "5",
  "pointLoad": "10"
}
'

{
  "tool": "beam-deflection-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "metric": "Deflection From Distributed Load",
        "value": "3.154 mm (0.1242 in)"
      },
      {
        "metric": "Deflection From Point Load (at mid-span)",
        "value": "3.364 mm (0.1325 in)"
      },
      {
        "metric": "Total Maximum Deflection",
        "value": "6.518 mm (0.2566 in)"
      },
      {
        "metric": "Span-to-Deflection Ratio (L/δ)",
        "value": "L/460.2 — meets the common L/360 live-load serviceability limit"
      },
      {
        "metric": "Elastic Modulus Used",
        "value": "200.0 GPa"
      },
      {
        "metric": "Note",
        "value": "Preliminary stiffness check only — verify against your governing design code's serviceability limits."
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}