Show current login node CPU and memory usage on the HPC cluster.
AI agents call node_load to retrieve information from Tacc Mcp Bio without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and displays system resource metrics (CPU and memory usage) from the HPC cluster's login node. It is a read-only operation that retrieves information about system state without creating, modifying, deleting, or executing any actions. The blast radius of misuse is minimal—an agent could only gather information about current system load, which is non-sensitive operational data.
From the tool's definition Tool name 'node_load' and description 'Show current login node CPU and memory usage' indicates retrieval of monitoring/status data with no modification or side effects.
Attacks that exploit this kind of access
Show current login node CPU and memory usage on the HPC cluster. It is categorised as a Read tool in the Tacc Mcp Bio MCP Server, which means it retrieves data without modifying state.
Register the Tacc Mcp Bio MCP server in PolicyLayer and add a rule for node_load: 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 Tacc Mcp Bio. Nothing to install.
node_load 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 node_load 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 node_load. 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.
node_load is provided by the Tacc Mcp Bio MCP server (narasimhan-lab/tacc-mcp-bio). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
node_load is one line of Tacc Mcp Bio's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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