{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://openyacht.org/schemas/v1/collection.schema.json",
  "title": "OpenYacht Listings Collection",
  "description": "Response envelope of GET /openyacht/v1/listings: a page of listings and tombstones plus sync metadata. The prose spec (spec/api-design.md) is normative; this schema is normative for JSON shape only — on any conflict the prose wins and this schema is defective.",
  "type": "object",
  "properties": {
    "data": {
      "type": "array",
      "items": {
        "anyOf": [
          { "$ref": "listing.schema.json" },
          { "$ref": "tombstone.schema.json" }
        ]
      }
    },
    "meta": {
      "type": "object",
      "properties": {
        "next_cursor": {
          "type": "string",
          "description": "Opaque pagination cursor. Absent (not null) on the last page — the one deliberate absence in the protocol."
        },
        "generated_at": {
          "type": "string",
          "format": "date-time",
          "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}(\\.[0-9]+)?Z$"
        },
        "protocol_version": { "type": "string", "pattern": "^[0-9]+\\.[0-9]+$" }
      },
      "required": ["generated_at", "protocol_version"],
      "patternProperties": { "^x_": true },
      "additionalProperties": false
    }
  },
  "required": ["data", "meta"],
  "patternProperties": { "^x_": true },
  "additionalProperties": false
}