{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/async-apis/refs/heads/main/json-schema/asyncapi-server-schema.json",
  "title": "AsyncAPI Server",
  "description": "An AsyncAPI Server — describes a broker or endpoint the application connects to. The protocol field selects the binding namespace (kafka, mqtt, amqp, ws, nats, etc.).",
  "type": "object",
  "required": ["host", "protocol"],
  "properties": {
    "host": {
      "type": "string",
      "description": "Hostname (and optional port) of the server. Variables allowed via `{var}` template syntax.",
      "examples": ["kafka.example.com:9092", "broker.hivemq.com:1883", "{env}.events.example.com"]
    },
    "pathname": {
      "type": "string",
      "description": "Optional path component for protocols that need it (e.g. AMQP vhost, WebSocket path)."
    },
    "protocol": {
      "type": "string",
      "description": "The protocol used. Drives which bindings are valid.",
      "enum": [
        "amqp", "amqps", "http", "https", "ibmmq", "jms",
        "kafka", "kafka-secure", "anypointmq", "mqtt", "secure-mqtt",
        "solace", "stomp", "stomps", "ws", "wss",
        "mercure", "googlepubsub", "pulsar", "nats", "sns", "sqs", "ros2"
      ]
    },
    "protocolVersion": {
      "type": "string",
      "description": "Version of the protocol, e.g. `0.9.1` for AMQP, `5.0` for MQTT, `3.6.0` for Kafka."
    },
    "title": {"type": "string"},
    "summary": {"type": "string"},
    "description": {"type": "string"},
    "variables": {
      "type": "object",
      "description": "Map of variables used in the host/pathname template.",
      "additionalProperties": {
        "type": "object",
        "properties": {
          "enum": {"type": "array"},
          "default": {"type": "string"},
          "description": {"type": "string"},
          "examples": {"type": "array"}
        }
      }
    },
    "security": {
      "type": "array",
      "description": "Security requirements that apply to all operations on this server.",
      "items": {"type": "object"}
    },
    "tags": {"type": "array"},
    "externalDocs": {"type": "object"},
    "bindings": {
      "type": "object",
      "description": "Protocol-specific server bindings (e.g. kafka.schemaRegistryUrl).",
      "properties": {
        "kafka": {"type": "object"},
        "mqtt": {"type": "object"},
        "amqp": {"type": "object"},
        "ws": {"type": "object"},
        "ibmmq": {"type": "object"}
      }
    }
  }
}