{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://asaptic.com/developers/contract/asaptic.tender.v1.schema.json",
  "title": "asaptic.tender.v1",
  "description": "Public data contract for the Asaptic tender feed (https://asaptic.com/tender/rows.json). One envelope per published issue; each row is the 11-field public listing shape. Detail beyond these 11 fields is access-gated and not part of this contract.",
  "type": "object",
  "required": ["generated", "issue_id", "market", "total", "withheld", "rows"],
  "properties": {
    "generated": {
      "type": "string",
      "description": "ISO 8601 timestamp of when this issue of the feed was generated.",
      "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}(\\.[0-9]+)?([+-][0-9]{2}:[0-9]{2}|Z)$"
    },
    "issue_id": {
      "type": "string",
      "description": "Weekly issue identifier, ISO week form.",
      "pattern": "^[0-9]{4}-W[0-9]{2}$"
    },
    "market": {
      "type": "string",
      "description": "Primary market of this feed build.",
      "minLength": 2,
      "maxLength": 3
    },
    "total": {
      "type": "integer",
      "description": "Number of rows published in this issue.",
      "minimum": 0
    },
    "withheld": {
      "type": "integer",
      "description": "Number of listings withheld from publication in this issue.",
      "minimum": 0
    },
    "rows": {
      "type": "array",
      "items": { "$ref": "#/$defs/row" }
    }
  },
  "additionalProperties": false,
  "$defs": {
    "row": {
      "type": "object",
      "description": "The 11-field public tender row.",
      "required": [
        "asaptic_id",
        "market",
        "category",
        "summary_en",
        "summary_zh",
        "summary_zht",
        "value_band",
        "closing_bucket",
        "lead_ok",
        "new_this_issue",
        "sort_key"
      ],
      "properties": {
        "asaptic_id": {
          "type": "string",
          "description": "Stable Asaptic listing id. Synthetic test fixtures use the AT-TEST- prefix and never collide with live ids.",
          "pattern": "^AT-(TEST-)?[A-Z]{2}-[0-9]{4}-[0-9]{3}$"
        },
        "market": {
          "type": "string",
          "description": "Market the opportunity belongs to.",
          "enum": ["HK", "SG", "MO", "GB", "AU", "CA", "EU"]
        },
        "category": {
          "type": "object",
          "description": "Trilingual category label.",
          "required": ["name_en", "name_zh", "name_zht"],
          "properties": {
            "name_en": { "type": "string", "minLength": 1 },
            "name_zh": { "type": "string", "minLength": 1 },
            "name_zht": { "type": "string", "minLength": 1 }
          },
          "additionalProperties": false
        },
        "summary_en": {
          "type": "string",
          "description": "Sanitized English summary of the requirement. Generic procurement language only.",
          "minLength": 1
        },
        "summary_zh": {
          "type": "string",
          "description": "Sanitized Simplified Chinese summary.",
          "minLength": 1
        },
        "summary_zht": {
          "type": "string",
          "description": "Sanitized Traditional Chinese summary.",
          "minLength": 1
        },
        "value_band": {
          "description": "Estimated value band in HKD-equivalent, or null when no estimate is published.",
          "enum": ["lt_500k", "500k_2m", "2m_10m", "gt_10m", null]
        },
        "closing_bucket": {
          "type": "string",
          "description": "Coarse time-to-close bucket. Exact closing timestamps are not part of the public contract.",
          "enum": ["le_2w", "2_4w", "gt_4w", "deadline_passed"]
        },
        "lead_ok": {
          "type": "boolean",
          "description": "Whether Asaptic accepts supplier interest against this listing."
        },
        "new_this_issue": {
          "type": "boolean",
          "description": "True if the listing first appeared in the current weekly issue."
        },
        "sort_key": {
          "type": "string",
          "description": "Opaque 64-hex stable sort key. Carries no recoverable information.",
          "pattern": "^[0-9a-f]{64}$"
        }
      },
      "additionalProperties": false
    }
  }
}