qt_object_tree
Get the full QObject parent-child tree (not just visible widgets).
This record as markdown: /tools/0xcarbon-qt-mcp/qt-object-tree.md
What qt_object_tree does on Qt
AI agents call qt_object_tree to retrieve information from Qt without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why qt_object_tree is rated Low
This tool performs introspection of a PySide6 application's object hierarchy without side effects. It reads and returns data about the parent-child relationships in the QObject tree. While it could expose sensitive information about application structure, it does not execute code, modify state, or perform actions. The blast radius is limited to information disclosure, making it a Read category tool with low severity.
From the tool's definition Tool description states 'Get the full QObject parent-child tree' with no modification, deletion, or execution of code. It retrieves structural information about UI objects.
Attacks that exploit this kind of access
The rule that runs qt_object_tree safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Qt, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For qt_object_tree, this is the rule to start with:
qt_object_tree is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Qt, apply this rule, and every qt_object_tree call is checked against it from then on.
Questions about qt_object_tree
Get the full QObject parent-child tree (not just visible widgets). It is categorised as a Read tool in the Qt MCP Server, which means it retrieves data without modifying state.
Register the Qt MCP server in PolicyLayer and add a rule for qt_object_tree: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Qt. Nothing to install.
qt_object_tree is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the qt_object_tree rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for qt_object_tree. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
qt_object_tree is provided by the Qt MCP server (0xcarbon/qt-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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