powershell_script_utf8
Run a local multi-line PowerShell script and capture output as UTF-8.
This record as markdown: /tools/mcp-control-plane/powershell-script-utf8.md
What powershell_script_utf8 does on Mcp Control Plane
AI agents invoke powershell_script_utf8 to trigger actions in Mcp Control Plane. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why powershell_script_utf8 is rated High
This tool permits execution of arbitrary code on the system. An AI agent given this tool could execute any Windows command—delete files, modify system settings, exfiltrate data, install malware, or pivot to other systems. While the blast radius depends on the process's privilege level, the capability is fundamentally Execute (or worse).
From the tool's definition Tool runs arbitrary 'PowerShell script' without constraints mentioned in the description. PowerShell is a full-featured scripting language capable of executing system commands, modifying configurations, accessing files, and triggering external operations.
Attacks that exploit this kind of access
The rule that runs powershell_script_utf8 safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Control Plane, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For powershell_script_utf8, this is the rule to start with:
powershell_script_utf8 stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Control Plane, apply this rule, and every powershell_script_utf8 call is checked against it from then on.
Questions about powershell_script_utf8
Run a local multi-line PowerShell script and capture output as UTF-8. It is categorised as a Execute tool in the Mcp Control Plane MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Mcp Control Plane MCP server in PolicyLayer and add a rule for powershell_script_utf8: 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 Mcp Control Plane. Nothing to install.
powershell_script_utf8 is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the powershell_script_utf8 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 powershell_script_utf8. 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.
powershell_script_utf8 is provided by the Mcp Control Plane MCP server (albertik322-sudo/mcp-control-plane). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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