{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "ThreadStartParams",
  "type": "object",
  "properties": {
    "approvalPolicy": {
      "anyOf": [
        {
          "$ref": "#/definitions/AskForApproval"
        },
        {
          "type": "null"
        }
      ]
    },
    "approvalsReviewer": {
      "description": "Override where approval requests are routed for review on this thread and subsequent turns.",
      "anyOf": [
        {
          "$ref": "#/definitions/ApprovalsReviewer"
        },
        {
          "type": "null"
        }
      ]
    },
    "baseInstructions": {
      "type": [
        "string",
        "null"
      ]
    },
    "config": {
      "type": [
        "object",
        "null"
      ],
      "additionalProperties": true
    },
    "cwd": {
      "type": [
        "string",
        "null"
      ]
    },
    "developerInstructions": {
      "type": [
        "string",
        "null"
      ]
    },
    "sandbox": {
      "anyOf": [
        {
          "$ref": "#/definitions/SandboxMode"
        },
        {
          "type": "null"
        }
      ]
    },
    "sessionStartSource": {
      "anyOf": [
        {
          "$ref": "#/definitions/ThreadStartSource"
        },
        {
          "type": "null"
        }
      ]
    },
    "ephemeral": {
      "type": [
        "boolean",
        "null"
      ]
    },
    "threadSource": {
      "description": "Optional client-supplied analytics source classification for this thread.",
      "anyOf": [
        {
          "$ref": "#/definitions/ThreadSource"
        },
        {
          "type": "null"
        }
      ]
    },
    "personality": {
      "anyOf": [
        {
          "$ref": "#/definitions/Personality"
        },
        {
          "type": "null"
        }
      ]
    },
    "model": {
      "type": [
        "string",
        "null"
      ]
    },
    "modelProvider": {
      "type": [
        "string",
        "null"
      ]
    },
    "serviceName": {
      "type": [
        "string",
        "null"
      ]
    },
    "serviceTier": {
      "type": [
        "string",
        "null"
      ]
    }
  },
  "definitions": {
    "AbsolutePathBuf": {
      "description": "A path that is guaranteed to be absolute and normalized (though it is not guaranteed to be canonicalized or exist on the filesystem).\n\nIMPORTANT: When deserializing an `AbsolutePathBuf`, a base path must be set using [AbsolutePathBufGuard::new]. If no base path is set, the deserialization will fail unless the path being deserialized is already absolute.",
      "type": "string"
    },
    "ApprovalsReviewer": {
      "description": "Configures who approval requests are routed to for review. Examples include sandbox escapes, blocked network access, MCP approval prompts, and ARC escalations. Defaults to `user`. `auto_review` uses a carefully prompted subagent to gather relevant context and apply a risk-based decision framework before approving or denying the request. The legacy value `guardian_subagent` is accepted for compatibility.",
      "type": "string",
      "enum": [
        "user",
        "auto_review",
        "guardian_subagent"
      ]
    },
    "AskForApproval": {
      "oneOf": [
        {
          "type": "string",
          "enum": [
            "untrusted",
            "on-failure",
            "on-request",
            "never"
          ]
        },
        {
          "type": "object",
          "required": [
            "granular"
          ],
          "properties": {
            "granular": {
              "type": "object",
              "required": [
                "mcp_elicitations",
                "rules",
                "sandbox_approval"
              ],
              "properties": {
                "mcp_elicitations": {
                  "type": "boolean"
                },
                "request_permissions": {
                  "default": false,
                  "type": "boolean"
                },
                "rules": {
                  "type": "boolean"
                },
                "sandbox_approval": {
                  "type": "boolean"
                },
                "skill_approval": {
                  "default": false,
                  "type": "boolean"
                }
              }
            }
          },
          "additionalProperties": false,
          "title": "GranularAskForApproval"
        }
      ]
    },
    "DynamicToolSpec": {
      "type": "object",
      "required": [
        "description",
        "inputSchema",
        "name"
      ],
      "properties": {
        "deferLoading": {
          "type": "boolean"
        },
        "description": {
          "type": "string"
        },
        "inputSchema": true,
        "name": {
          "type": "string"
        },
        "namespace": {
          "type": [
            "string",
            "null"
          ]
        }
      }
    },
    "Personality": {
      "type": "string",
      "enum": [
        "none",
        "friendly",
        "pragmatic"
      ]
    },
    "SandboxMode": {
      "type": "string",
      "enum": [
        "read-only",
        "workspace-write",
        "danger-full-access"
      ]
    },
    "ThreadSource": {
      "type": "string",
      "enum": [
        "user",
        "subagent",
        "memory_consolidation"
      ]
    },
    "ThreadStartSource": {
      "type": "string",
      "enum": [
        "startup",
        "clear"
      ]
    },
    "TurnEnvironmentParams": {
      "type": "object",
      "required": [
        "cwd",
        "environmentId"
      ],
      "properties": {
        "cwd": {
          "$ref": "#/definitions/AbsolutePathBuf"
        },
        "environmentId": {
          "type": "string"
        }
      }
    }
  }
}