{
  "$comment": "MPLP Protocol v1.0.0 — Frozen Specification\nFreeze Date: 2025-12-03\nStatus: FROZEN (no breaking changes permitted)\nGovernance: MPLP Protocol Governance Committee (MPGC)\nCopyright: © 2026 Jearon Wong\nLicense: Apache-2.0\nAny normative change requires a new protocol version.",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://schemas.mplp.dev/v1.0/mplp-collab.schema.json",
  "title": "MPLP Collab Module – Core Protocol v1.0",
  "description": "Collab Module Core Protocol: Describes the minimal required semantics (Core Profile) for multi-agent / multi-role collaboration sessions.",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "meta": {
      "$ref": "common/metadata.schema.json",
      "description": "[PROTOCOL-CORE] 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": {
          "$ref": "common/common-types.schema.json#/definitions/Ref",
          "description": "Reference to the last Confirm decision that validated this state."
        }
      },
      "additionalProperties": false
    },
    "collab_id": {
      "$ref": "common/identifiers.schema.json",
      "description": "[PROTOCOL-CORE] Global unique identifier for the collaboration session."
    },
    "context_id": {
      "$ref": "common/identifiers.schema.json",
      "description": "[PROTOCOL-CORE] Identifier of the Context this collaboration session belongs to."
    },
    "title": {
      "type": "string",
      "minLength": 1,
      "description": "[PROTOCOL-CORE] Collaboration session title."
    },
    "purpose": {
      "type": "string",
      "minLength": 1,
      "description": "[PROTOCOL-CORE] Description of the purpose/goal of the collaboration."
    },
    "mode": {
      "type": "string",
      "description": "[PROTOCOL-CORE] Collaboration mode (broadcast, round_robin, orchestrated, etc.).",
      "enum": [
        "broadcast",
        "round_robin",
        "orchestrated",
        "swarm",
        "pair"
      ]
    },
    "status": {
      "type": "string",
      "description": "[PROTOCOL-CORE] Collaboration session status.",
      "enum": [
        "draft",
        "active",
        "suspended",
        "completed",
        "cancelled"
      ]
    },
    "participants": {
      "type": "array",
      "description": "[PROTOCOL-CORE] List of roles/Agents participating in the collaboration.",
      "minItems": 1,
      "items": {
        "$ref": "#/$defs/collab_participant_core"
      }
    },
    "created_at": {
      "type": "string",
      "format": "date-time",
      "description": "[PROTOCOL-CORE] Creation time (ISO 8601)."
    },
    "updated_at": {
      "type": "string",
      "format": "date-time",
      "description": "[PROTOCOL-CORE] Last update time (ISO 8601)."
    },
    "trace": {
      "$ref": "common/trace-base.schema.json",
      "description": "[PROTOCOL-CORE] Trace reference bound to this collaboration session."
    },
    "events": {
      "type": "array",
      "description": "[PROTOCOL-CORE] List of key events directly related to this collaboration.",
      "items": {
        "$ref": "common/events.schema.json"
      }
    }
  },
  "required": [
    "meta",
    "collab_id",
    "context_id",
    "title",
    "purpose",
    "mode",
    "status",
    "participants",
    "created_at"
  ],
  "$defs": {
    "collab_core_properties": {
      "type": "object",
      "properties": {
        "meta": {
          "$ref": "common/metadata.schema.json",
          "description": "[PROTOCOL-CORE] Protocol and schema metadata."
        },
        "collab_id": {
          "$ref": "common/identifiers.schema.json",
          "description": "[PROTOCOL-CORE] Global unique identifier for the collaboration session."
        },
        "context_id": {
          "$ref": "common/identifiers.schema.json",
          "description": "[PROTOCOL-CORE] Identifier of the Context this collaboration session belongs to."
        },
        "title": {
          "type": "string",
          "minLength": 1,
          "description": "[PROTOCOL-CORE] Collaboration session title."
        },
        "purpose": {
          "type": "string",
          "minLength": 1,
          "description": "[PROTOCOL-CORE] Description of the purpose/goal of the collaboration."
        },
        "mode": {
          "type": "string",
          "description": "[PROTOCOL-CORE] Collaboration mode (broadcast, round_robin, orchestrated, etc.).",
          "enum": [
            "broadcast",
            "round_robin",
            "orchestrated",
            "swarm",
            "pair"
          ]
        },
        "status": {
          "type": "string",
          "description": "[PROTOCOL-CORE] Collaboration session status.",
          "enum": [
            "draft",
            "active",
            "suspended",
            "completed",
            "cancelled"
          ]
        },
        "participants": {
          "type": "array",
          "description": "[PROTOCOL-CORE] List of roles/Agents participating in the collaboration.",
          "minItems": 1,
          "items": {
            "$ref": "#/$defs/collab_participant_core"
          }
        },
        "created_at": {
          "type": "string",
          "format": "date-time",
          "description": "[PROTOCOL-CORE] Creation time (ISO 8601)."
        },
        "updated_at": {
          "type": "string",
          "format": "date-time",
          "description": "[PROTOCOL-CORE] Last update time (ISO 8601)."
        },
        "trace": {
          "$ref": "common/trace-base.schema.json",
          "description": "[PROTOCOL-CORE] Trace reference bound to this collaboration session."
        },
        "events": {
          "type": "array",
          "description": "[PROTOCOL-CORE] List of key events directly related to this collaboration.",
          "items": {
            "$ref": "common/events.schema.json"
          }
        }
      },
      "required": [
        "meta",
        "collab_id",
        "context_id",
        "title",
        "purpose",
        "mode",
        "status",
        "participants",
        "created_at"
      ]
    },
    "collab_participant_core": {
      "type": "object",
      "description": "[PROTOCOL-CORE] Minimal required semantics for a collaboration participant.",
      "additionalProperties": false,
      "properties": {
        "participant_id": {
          "type": "string",
          "minLength": 1,
          "description": "[PROTOCOL-CORE] Participant identifier (can be Role/Agent/External ID)."
        },
        "role_id": {
          "type": "string",
          "description": "[PROTOCOL-CORE] Role ID bound to this participant (corresponds to role_id in Role module)."
        },
        "kind": {
          "type": "string",
          "description": "[PROTOCOL-CORE] Participant type.",
          "enum": [
            "agent",
            "human",
            "system",
            "external"
          ]
        },
        "display_name": {
          "type": "string",
          "description": "[PROTOCOL-CORE] Display name (for human identification)."
        }
      },
      "required": [
        "participant_id",
        "kind"
      ]
    }
  }
}