getfitcraft.com

{
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "goal": {
      "type": "string",
      "enum": [
        "muscle",
        "weight",
        "consistent"
      ],
      "description": "Training goal: muscle (build muscle), weight (lose weight), consistent (build the habit on a minimum effective dose)."
    },
    "experience": {
      "type": "string",
      "enum": [
        "beginner",
        "intermediate",
        "advanced"
      ],
      "description": "Training experience: beginner (under 6 months), intermediate (6 months to 2 years), advanced (2 years or more)."
    },
    "days_per_week": {
      "type": "number",
      "description": "Resistance training days per week, 2 to 5.",
      "minimum": 2,
      "maximum": 5
    },
    "equipment": {
      "type": "string",
      "enum": [
        "none",
        "dumbbells",
        "gym"
      ],
      "description": "Available equipment: none (no equipment, bodyweight only), dumbbells, or gym (full gym)."
    },
    "session_length": {
      "type": "string",
      "enum": [
        "short",
        "medium",
        "long"
      ],
      "description": "Available session time: short (10 to 20 minutes), medium (20 to 30 minutes), long (30 to 45 minutes)."
    },
    "extras": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": [
          "bar",
          "rings",
          "bench",
          "band"
        ]
      },
      "uniqueItems": true,
      "description": "Optional extra gear the user also has, for equipment none or dumbbells (ignored for gym, which has all of it): bar (overhead pull-up bar, for chin-ups and chin-up negatives), rings (rings, suspension straps, a low bar, or a sturdy table to row under, for inverted rows), bench (Bulgarian split squats, bench dips, supported rows, pullovers), band (resistance band, for pull-aparts and pulldowns from a door anchor). Omit or leave empty when the user has none of these."
    }
  },
  "required": [
    "goal",
    "days_per_week",
    "equipment"
  ]
}