{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:orbiplex:schema:middleware-channel-call-result:v1",
  "title": "Middleware Channel Call Result v1",
  "description": "Redacted host-capability result with explicit retry and policy failure semantics.",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema", "schema/v", "outcome", "result/schema", "result", "failure"],
  "properties": {
    "schema": {"const": "middleware-channel-call-result.v1"},
    "schema/v": {"const": 1},
    "outcome": {"type": "string", "enum": ["succeeded", "refused", "failed"]},
    "result/schema": {
      "type": ["string", "null"],
      "minLength": 1,
      "maxLength": 128,
      "pattern": "^[a-z0-9][a-z0-9._-]*$"
    },
    "result": true,
    "failure": {
      "oneOf": [{"type": "null"}, {"$ref": "#/$defs/failure"}]
    }
  },
  "allOf": [
    {
      "if": {"properties": {"outcome": {"const": "succeeded"}}, "required": ["outcome"]},
      "then": {
        "properties": {
          "result/schema": {"type": "string"},
          "result": {"not": {"type": "null"}},
          "failure": {"type": "null"}
        }
      }
    },
    {
      "if": {"properties": {"outcome": {"const": "refused"}}, "required": ["outcome"]},
      "then": {
        "properties": {
          "result/schema": {"type": "null"},
          "result": {"type": "null"},
          "failure": {
            "allOf": [
              {"$ref": "#/$defs/failure"},
              {"properties": {"class": {"const": "policy-denied"}}}
            ]
          }
        }
      }
    },
    {
      "if": {"properties": {"outcome": {"const": "failed"}}, "required": ["outcome"]},
      "then": {
        "properties": {
          "result/schema": {"type": "null"},
          "result": {"type": "null"},
          "failure": {
            "allOf": [
              {"$ref": "#/$defs/failure"},
              {"properties": {"class": {"enum": ["retryable", "terminal"]}}}
            ]
          }
        }
      }
    }
  ],
  "$defs": {
    "failure": {
      "type": "object",
      "additionalProperties": false,
      "required": ["class", "code", "message", "tracking/id"],
      "properties": {
        "class": {
          "type": "string",
          "enum": ["retryable", "terminal", "policy-denied"]
        },
        "code": {
          "type": "string",
          "minLength": 1,
          "maxLength": 128,
          "pattern": "^[a-z0-9][a-z0-9._-]*$"
        },
        "message": {"type": "string", "minLength": 1, "maxLength": 512},
        "tracking/id": {
          "type": "string",
          "minLength": 1,
          "maxLength": 256,
          "pattern": "^[A-Za-z0-9][A-Za-z0-9._:/-]*$"
        }
      }
    }
  },
  "x-dia-basis": [
    "orbidocs:doc/project/40-proposals/080-multiplexed-middleware-channel-executor.md"
  ]
}