{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://covibes.dev/asp/schemas/envelope.schema.json",
  "title": "JSON-RPC envelope",
  "description": "ASP messages are JSON-RPC 2.0. The three branches are mutually exclusive: a request has method+id; a notification has method and no id; a response has id, no method, and exactly one of result/error. The params/result/error PAYLOAD is validated separately against the per-method $def named by a fixture's 'validates' (see index.json exampleBinding). Fixtures may carry a '//' comment key.",
  "oneOf": [
    {
      "title": "request",
      "type": "object",
      "required": ["jsonrpc", "id", "method"],
      "properties": {
        "jsonrpc": { "const": "2.0" },
        "id": { "oneOf": [ { "type": "string" }, { "type": "integer" } ] },
        "method": { "type": "string" },
        "params": { "type": ["object", "array"] }
      }
    },
    {
      "title": "notification",
      "type": "object",
      "required": ["jsonrpc", "method"],
      "not": { "required": ["id"] },
      "properties": {
        "jsonrpc": { "const": "2.0" },
        "method": { "type": "string" },
        "params": { "type": ["object", "array"] }
      }
    },
    {
      "title": "response",
      "type": "object",
      "required": ["jsonrpc", "id"],
      "allOf": [
        { "not": { "required": ["method"] } },
        { "oneOf": [
          { "required": ["result"], "not": { "required": ["error"] } },
          { "required": ["error"], "not": { "required": ["result"] } }
        ] }
      ],
      "properties": {
        "jsonrpc": { "const": "2.0" },
        "id": { "oneOf": [ { "type": "string" }, { "type": "integer" }, { "type": "null" } ] },
        "result": true,
        "error": { "$ref": "https://covibes.dev/asp/schemas/error.schema.json" }
      }
    }
  ]
}