{
  "openapi": "3.1.0",
  "info": {
    "title": "UNE Sino-Gateway M2M API",
    "version": "1.1.0",
    "contact": {"name": "UNE Operations", "email": "ops@une.education"}, "description": "Deterministic legal cross-referencing, dispute deadline calculation, bilingual notice generation, and CIETAC arbitration clauses between PRC Civil Code and CISG/Western standards."
  },
  "servers": [
    {
      "url": "https://legal.une.education/sino"
    }
  ],
  "paths": {
    "/index.php": {
      "get": {
        "summary": "Execute deterministic Sino-Occidental legal operations",
        "parameters": [
          {
            "name": "action",
            "in": "query",
            "required": true,
            "schema": {
              "type": "string",
              "enum": ["ping", "matrix", "inspection_delay", "defect_notice", "cietac_clause"]
            }
          },
          {
            "name": "topic",
            "in": "query",
            "required": false,
            "schema": { "type": "string" },
            "description": "Matrix topic key (e.g. conformite_marchandises)"
          },
          {
            "name": "arrival_date",
            "in": "query",
            "required": false,
            "schema": { "type": "string", "format": "date" },
            "description": "Cargo arrival date (YYYY-MM-DD)"
          },
          {
            "name": "defect_type",
            "in": "query",
            "required": false,
            "schema": { "type": "string", "enum": ["apparent", "hidden"], "default": "apparent" }
          },
          {
            "name": "contract_ref",
            "in": "query",
            "required": false,
            "schema": { "type": "string" }
          },
          {
            "name": "bl_number",
            "in": "query",
            "required": false,
            "schema": { "type": "string" }
          },
          {
            "name": "defect_summary",
            "in": "query",
            "required": false,
            "schema": { "type": "string" }
          },
          {
            "name": "remedy",
            "in": "query",
            "required": false,
            "schema": { "type": "string", "enum": ["replacement", "price_reduction", "rescission"], "default": "replacement" }
          },
          {
            "name": "seat",
            "in": "query",
            "required": false,
            "schema": { "type": "string", "default": "Beijing" }
          },
          {
            "name": "lang",
            "in": "query",
            "required": false,
            "schema": { "type": "string", "default": "English" }
          },
          {
            "name": "arbitrators",
            "in": "query",
            "required": false,
            "schema": { "type": "integer", "enum": [1, 3], "default": 3 }
          }
        ],
        "responses": {
          "200": {
            "description": "Deterministic legal result with SHA-256 cryptographic audit seal"
          }
        }
      }
    }
  }
}