This record as markdown: /tools/0xyg3n-claude-c2/psexec.md
What psexec does on Claude C2
AI agents invoke psexec to trigger actions in Claude C2. 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 psexec is rated High
PsExec enables arbitrary remote code execution on target systems. In the context of this server (which also exposes tools like amsi_bypass, bypassuac, browser_creds, and defender_exclude), this is clearly a command-and-control capability. Misuse could allow full system compromise of remote machines.
From the tool's definition 'PsExec remote execution' — PsExec is a well-known Sysinternals tool used to execute processes on remote systems, often leveraged in lateral movement and remote command execution scenarios.
Attacks that exploit this kind of access
The rule that runs psexec safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Claude C2, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For psexec, this is the rule to start with:
psexec 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 Claude C2, apply this rule, and every psexec call is checked against it from then on.
Questions about psexec
PsExec remote execution. Auto-selects client. It is categorised as a Execute tool in the Claude C2 MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Claude C2 MCP server in PolicyLayer and add a rule for psexec: 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 Claude C2. Nothing to install.
psexec 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 psexec 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 psexec. 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.
psexec is provided by the Claude C2 MCP server (0xyg3n/claude-c2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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