{
  "$comment": "MPLP Protocol v1.0.0 — Frozen Specification\nFreeze Date: 2025-12-03\nStatus: FROZEN (no breaking changes permitted)\nGovernance: MPLP Protocol Governance Committee (MPGC)\nCopyright: © 2026 Jearon Wong\nLicense: Apache-2.0\nAny normative change requires a new protocol version.",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://schemas.mplp.dev/v1.0/mplp-dialog.schema.json",
  "title": "MPLP Dialog Module – Core Protocol v1.0",
  "description": "Dialog Module Core Protocol: Describes the dialog interaction semantics in multi-agent systems, adopting Minimal Protocol Format aligned with OpenAI/Anthropic standards.",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "meta": {
      "$ref": "common/metadata.schema.json",
      "description": "[PROTOCOL-CORE] MPLP protocol and schema metadata."
    },
    "governance": {
      "type": "object",
      "description": "[PROTOCOL-CORE] Governance metadata for lifecycle management, truth domain authority, and locking status.",
      "properties": {
        "lifecyclePhase": {
          "type": "string",
          "description": "Current phase in the lifecycle fence (e.g., 'design', 'implementation', 'review')."
        },
        "truthDomain": {
          "type": "string",
          "description": "The truth domain this object belongs to (e.g., 'requirements', 'architecture')."
        },
        "locked": {
          "type": "boolean",
          "description": "If true, this object cannot be modified except by specific governance overrides."
        },
        "lastConfirmRef": {
          "$ref": "common/common-types.schema.json#/definitions/Ref",
          "description": "Reference to the last Confirm decision that validated this state."
        }
      },
      "additionalProperties": false
    },
    "dialog_id": {
      "$ref": "common/identifiers.schema.json",
      "description": "[PROTOCOL-CORE] Global unique identifier for the Dialog."
    },
    "context_id": {
      "$ref": "common/identifiers.schema.json",
      "description": "[PROTOCOL-CORE] Associated Context ID."
    },
    "thread_id": {
      "$ref": "common/identifiers.schema.json",
      "description": "[PROTOCOL-CORE] Dialog thread ID (for multi-turn dialog grouping)."
    },
    "status": {
      "type": "string",
      "description": "[PROTOCOL-CORE] Dialog status.",
      "enum": [
        "active",
        "paused",
        "completed",
        "cancelled"
      ]
    },
    "messages": {
      "type": "array",
      "description": "[PROTOCOL-CORE] Dialog message list (Minimal Protocol Format).",
      "items": {
        "$ref": "#/$defs/dialog_message_core"
      }
    },
    "started_at": {
      "type": "string",
      "format": "date-time",
      "description": "[PROTOCOL-CORE] Dialog start time (ISO 8601)."
    },
    "ended_at": {
      "type": "string",
      "format": "date-time",
      "description": "[PROTOCOL-CORE] Dialog end time (ISO 8601)."
    },
    "trace": {
      "$ref": "common/trace-base.schema.json",
      "description": "[PROTOCOL-CORE] Audit trace reference associated with this dialog."
    },
    "events": {
      "type": "array",
      "description": "[PROTOCOL-CORE] List of key events directly related to this dialog.",
      "items": {
        "$ref": "common/events.schema.json"
      }
    }
  },
  "required": [
    "meta",
    "dialog_id",
    "context_id",
    "status",
    "messages"
  ],
  "$defs": {
    "dialog_core_properties": {
      "type": "object",
      "properties": {
        "meta": {
          "$ref": "common/metadata.schema.json",
          "description": "[PROTOCOL-CORE] MPLP protocol and schema metadata."
        },
        "dialog_id": {
          "$ref": "common/identifiers.schema.json",
          "description": "[PROTOCOL-CORE] Global unique identifier for the Dialog."
        },
        "context_id": {
          "$ref": "common/identifiers.schema.json",
          "description": "[PROTOCOL-CORE] Associated Context ID."
        },
        "thread_id": {
          "$ref": "common/identifiers.schema.json",
          "description": "[PROTOCOL-CORE] Dialog thread ID (for multi-turn dialog grouping)."
        },
        "status": {
          "type": "string",
          "description": "[PROTOCOL-CORE] Dialog status.",
          "enum": [
            "active",
            "paused",
            "completed",
            "cancelled"
          ]
        },
        "messages": {
          "type": "array",
          "description": "[PROTOCOL-CORE] Dialog message list (Minimal Protocol Format).",
          "items": {
            "$ref": "#/$defs/dialog_message_core"
          }
        },
        "started_at": {
          "type": "string",
          "format": "date-time",
          "description": "[PROTOCOL-CORE] Dialog start time (ISO 8601)."
        },
        "ended_at": {
          "type": "string",
          "format": "date-time",
          "description": "[PROTOCOL-CORE] Dialog end time (ISO 8601)."
        },
        "trace": {
          "$ref": "common/trace-base.schema.json",
          "description": "[PROTOCOL-CORE] Audit trace reference associated with this dialog."
        },
        "events": {
          "type": "array",
          "description": "[PROTOCOL-CORE] List of key events directly related to this dialog.",
          "items": {
            "$ref": "common/events.schema.json"
          }
        }
      },
      "required": [
        "meta",
        "dialog_id",
        "context_id",
        "status",
        "messages"
      ]
    },
    "dialog_message_core": {
      "type": "object",
      "description": "Minimal Protocol Format - Aligned with OpenAI/Anthropic standards",
      "additionalProperties": false,
      "properties": {
        "role": {
          "type": "string",
          "description": "Message sender role.",
          "enum": [
            "user",
            "assistant",
            "system",
            "agent"
          ]
        },
        "content": {
          "type": "string",
          "description": "Message content (plain text)."
        },
        "timestamp": {
          "type": "string",
          "format": "date-time",
          "description": "Message timestamp (ISO 8601)."
        },
        "event": {
          "$ref": "common/events.schema.json",
          "description": "Optional L1 Event reference (for deep integration with Trace module)."
        }
      },
      "required": [
        "role",
        "content",
        "timestamp"
      ]
    }
  }
}