> curl --data @- -X POST --dump - http://localhost:8529/_api/explain
{ "query" : "FOR u IN users FILTER u.id == @id LIMIT 2 RETURN u.name", "bindVars": { "id" : 3 } }

HTTP/1.1 200 OK
content-type: application/json

{
  "plan": [
    { "id": 1,
      "level": 1,
      "type": "for",
      "resultVariable": "u",
      "expression": {
        "type": "collection",
        "value": "users",
        "extra": {
          "accessType": "index",
          "index": {
            "id": "1392880787389/1425650910275",
            "type": "hash",
            "attributes": "id"
          }
        }
      }
    },
    {
      "id": 2,
      "level": 1,
      "type": "filter",
      "expression": {
        "type": "expression",
        "value": "u.id == 3"
      }
    },
    {
      "id": 3,
      "level": 1,
      "type": "limit",
      "offset": 0,
      "count": 2
    },
    {
      "id": 4,
      "level": 1,
      "type": "limit",
      "offset": 0,
      "count": 2
    },
    {
      "id": 5,
      "level": 1,
      "type": "return",
      "expression": {
        "type": "expression",
        "value": "u.name"
      }
    }
  ],
  "error": false,
  "code": 200
}