AI agents call list_jobs to retrieve information from Ns Hpc without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns job information with no side effects. It fits the Read category definition: 'retrieves or queries data; no side effects (search, list, get, fetch).' The severity is low because merely listing jobs poses minimal risk—an agent cannot misuse this to cause harm, damage data, or trigger unwanted operations.
From the tool's definition Tool name 'list_jobs' and description 'List tracked jobs for an instance' indicate a query operation that retrieves data about existing jobs without modifying, deleting, or executing anything.
Attacks that exploit this kind of access
List tracked jobs for an instance, newest first, with pagination. It is categorised as a Read tool in the Ns Hpc MCP Server, which means it retrieves data without modifying state.
Register the Ns Hpc MCP server in PolicyLayer and add a rule for list_jobs: 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 Ns Hpc. Nothing to install.
list_jobs 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 list_jobs 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 list_jobs. 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.
list_jobs is provided by the Ns Hpc MCP server (li-yq/namespaced-hpc-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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