process_enum_handles
Enumerate open handles for a process using NtQuerySystemInformation. Resolves handle type and object name, decodes access masks, identifies security risks (high-privilege handles to sensitive processes, dangerous Token handles, inheritable sensitive handles, Section handles to executables). Skips...
This record as markdown: /tools/io-github-vmoranv-jshookmcp/process-enum-handles.md
What process_enum_handles does on Jshookmcp
AI agents call process_enum_handles to retrieve information from Jshookmcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why process_enum_handles is rated Low
Reads process handle information and identifies security risks; no modification occurs.
From the tool's definition Enumerate open handles, resolves handle type and object name, decodes access masks
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
The rule that runs process_enum_handles safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Jshookmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For process_enum_handles, this is the rule to start with:
process_enum_handles 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 Jshookmcp, apply this rule, and every process_enum_handles call is checked against it from then on.
Questions about process_enum_handles
Enumerate open handles for a process using NtQuerySystemInformation. Resolves handle type and object name, decodes access masks, identifies security risks (high-privilege handles to sensitive processes, dangerous Token handles, inheritable sensitive handles, Section handles to executables). Skips name resolution for File/EtwRegistration types (known to hang). Requires elevated privileges (run as Administrator). Win32 only. It is categorised as a Read tool in the Jshookmcp MCP Server, which means it retrieves data without modifying state.
Register the Jshook MCP server in PolicyLayer and add a rule for process_enum_handles: 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 Jshookmcp. Nothing to install.
process_enum_handles 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 process_enum_handles 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 process_enum_handles. 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.
process_enum_handles is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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