{
  "$id": "https://public-agents.com/schemas/payment-protocols.schema.json",
  "title": "payment-protocols",
  "description": "The payment protocol vocabulary (registry/payment-protocols.json)",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "$schema": {
      "type": "string",
      "const": "https://public-agents.com/schemas/payment-protocols.schema.json"
    },
    "protocols": {
      "maxItems": 40,
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-z0-9](?:[a-z0-9-]{0,30}[a-z0-9])?$"
          },
          "name": {
            "type": "string",
            "minLength": 1,
            "maxLength": 80
          },
          "url": {
            "type": "string",
            "pattern": "^[Hh][Tt][Tt][Pp][Ss]:\\/\\/",
            "format": "uri"
          },
          "spec": {
            "anyOf": [
              {
                "type": "string",
                "pattern": "^[Hh][Tt][Tt][Pp][Ss]:\\/\\/",
                "format": "uri"
              },
              {
                "type": "null"
              }
            ]
          },
          "summary": {
            "type": "string",
            "minLength": 20,
            "maxLength": 400
          },
          "source": {
            "type": "string",
            "pattern": "^[Hh][Tt][Tt][Pp][Ss]:\\/\\/",
            "format": "uri"
          },
          "since": {
            "type": "string",
            "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
          }
        },
        "required": [
          "id",
          "name",
          "url",
          "summary",
          "source"
        ],
        "additionalProperties": false
      }
    }
  },
  "required": [
    "protocols"
  ],
  "additionalProperties": false
}