Swarm of Mechanical Spiders

{
  "ac": [
    {
      "ac": 12,
      "from": [
        "natural armor"
      ]
    }
  ],
  "cr": "1/2",
  "hp": {
    "average": 22,
    "formula": "5d8"
  },
  "cha": 1,
  "con": 10,
  "dex": 13,
  "int": 1,
  "str": 3,
  "wis": 7,
  "name": "Swarm of Mechanical Spiders",
  "page": 143,
  "size": [
    "M"
  ],
  "type": {
    "type": "construct",
    "swarmSize": "T"
  },
  "speed": {
    "walk": 20,
    "climb": 20
  },
  "trait": [
    {
      "name": "Constructed Nature",
      "entries": [
        "The swarm doesn't require air, food, drink, or sleep."
      ]
    },
    {
      "name": "Swarm",
      "entries": [
        "The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny insect. The swarm can't regain hit points or gain temporary hit points."
      ]
    },
    {
      "name": "Spider Climb",
      "entries": [
        "The swarm can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check."
      ]
    },
    {
      "name": "Web Sense",
      "entries": [
        "While in contact with a web, the swarm knows the exact location of any other creature in contact with the same web."
      ]
    },
    {
      "name": "Web Walker",
      "entries": [
        "The swarm ignores movement restrictions caused by webbing."
      ]
    }
  ],
  "__prop": "monster",
  "action": [
    {
      "name": "Bites",
      "entries": [
        "{@atk mw} {@hit 3} to hit, reach 0 ft., one target in the swarm's space. {@h}10 ({@damage 4d4}) piercing damage, or 5 ({@damage 2d4}) piercing damage if the swarm has half of its hit points or fewer."
      ]
    }
  ],
  "resist": [
    "bludgeoning",
    "piercing",
    "slashing"
  ],
  "senses": [
    "blindsight 10 ft."
  ],
  "source": "WDH",
  "passive": 8,
  "hasFluff": true,
  "hasToken": true,
  "miscTags": [
    "MW"
  ],
  "alignment": [
    "U"
  ],
  "senseTags": [
    "B"
  ],
  "traitTags": [
    "Spider Climb",
    "Web Sense",
    "Web Walker"
  ],
  "damageTags": [
    "P"
  ],
  "vulnerable": [
    "lightning"
  ],
  "conditionImmune": [
    "exhaustion",
    "charmed",
    "frightened",
    "grappled",
    "paralyzed",
    "petrified",
    "prone",
    "restrained",
    "stunned",
    "poisoned"
  ]
}