{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "activePermissionProfile": {
      "anyOf": [
        {
          "$ref": "./CodexAppServerProtocolDefinitions.json#/definitions/ActivePermissionProfile"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Named or implicit built-in profile that produced the active permissions, when known."
    },
    "approvalPolicy": {
      "$ref": "./CodexAppServerProtocolDefinitions.json#/definitions/AskForApproval"
    },
    "approvalsReviewer": {
      "allOf": [
        {
          "$ref": "./CodexAppServerProtocolDefinitions.json#/definitions/ApprovalsReviewer"
        }
      ],
      "description": "Reviewer currently used for approval requests on this thread."
    },
    "cwd": {
      "$ref": "./CodexAppServerProtocolDefinitions.json#/definitions/AbsolutePathBuf"
    },
    "instructionSources": {
      "default": [],
      "description": "Environment-native paths to instruction source files currently loaded for this thread.",
      "items": {
        "$ref": "./CodexAppServerProtocolDefinitions.json#/definitions/LegacyAppPathString"
      },
      "type": "array"
    },
    "model": {
      "type": "string"
    },
    "modelProvider": {
      "type": "string"
    },
    "multiAgentMode": {
      "allOf": [
        {
          "$ref": "./CodexAppServerProtocolDefinitions.json#/definitions/MultiAgentMode"
        }
      ],
      "default": "explicitRequestOnly",
      "description": "@deprecated Always `explicitRequestOnly`. Use `reasoningEffort` for Ultra behavior."
    },
    "reasoningEffort": {
      "anyOf": [
        {
          "$ref": "./CodexAppServerProtocolDefinitions.json#/definitions/ReasoningEffort"
        },
        {
          "type": "null"
        }
      ]
    },
    "runtimeWorkspaceRoots": {
      "default": [],
      "description": "Thread-scoped runtime workspace roots used to materialize `:workspace_roots`.",
      "items": {
        "$ref": "./CodexAppServerProtocolDefinitions.json#/definitions/AbsolutePathBuf"
      },
      "type": "array"
    },
    "sandbox": {
      "allOf": [
        {
          "$ref": "./CodexAppServerProtocolDefinitions.json#/definitions/SandboxPolicy"
        }
      ],
      "description": "Legacy sandbox policy retained for compatibility. Experimental clients should prefer `activePermissionProfile` for profile provenance."
    },
    "serviceTier": {
      "type": [
        "string",
        "null"
      ]
    },
    "thread": {
      "$ref": "./CodexAppServerProtocolDefinitions.json#/definitions/Thread"
    }
  },
  "required": [
    "approvalPolicy",
    "approvalsReviewer",
    "cwd",
    "model",
    "modelProvider",
    "sandbox",
    "thread"
  ],
  "title": "ThreadStartResponse",
  "type": "object"
}