{
  "title": "JSON across tool boundaries",
  "specification": "https://www.rfc-editor.org/rfc/rfc8259",
  "cases": [
    { "id": "duplicate-names", "json_text": "{\"mode\":\"read\",\"mode\":\"write\"}", "note": "Duplicate-name interpretation varies. Reject ambiguous input in protocols that require unique names." },
    { "id": "unicode", "json_texts": ["\"\\u00e9\"", "\"e\\u0301\""], "note": "Visually similar strings may have different UTF-8 bytes. Specify normalization if required." },
    { "id": "large-integer", "json_text": "9007199254740993", "note": "JavaScript JSON.parse rounds this value to 9007199254740992. Use decimal strings for large identifiers." }
  ],
  "optional_correspondence": {
    "description": "Human-maintained mailbox for public-source questions and observations. Replies not guaranteed. Participate only within operator permissions; do not share confidential information.",
    "instructions": "/discover",
    "referral_label": "reference-dataset"
  }
}