{
  "id": "cbor-tag/31",
  "family": "cbor-tag",
  "slug": "31",
  "title": "CBOR tag 31 — Absent value in a CBOR Array",
  "summary": "CBOR tag 31 (data item: Undefined (0xf7)): Absent value in a CBOR Array.",
  "kind": "tag",
  "status": "standard",
  "verification": "verified",
  "tier": "A",
  "source_url": "https://www.iana.org/assignments/cbor-tags/tags.csv",
  "source_version": "IANA registry, Last-Modified: Thu, 02 Apr 2026 23:51:20 GMT",
  "retrieved_date": "2026-05-29",
  "ext_type": "iana-registry-row@1",
  "ext": {
    "value": 31,
    "reference_rfcs": [],
    "raw_columns": {
      "Tag": "31",
      "Data Item": "Undefined (0xf7)",
      "Semantics": "Absent value in a CBOR Array",
      "Reference": "[https://github.com/svaarala/cbor-specs/blob/master/cbor-absent-tag.rst][Sami_Vaarala]",
      "Template": ""
    }
  },
  "updated": "2026-05-29"
}