apply_hs_objective | PolicyLayer

WHAT IT DOES

What apply_hs_objective does on Hammerspace Storage Management MCP Server

AI agents invoke apply_hs_objective to trigger actions in Hammerspace Storage Management MCP Server. 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 IT NEEDS A POLICY

Why apply_hs_objective needs a policy

This tool runs a CLI command ('hs CLI') to apply a storage objective, which constitutes executing an external shell/system command. Objectives in storage management can modify tiering, data placement, retention policies, and other storage behaviors.

From the tool's definition Apply a Hammerspace objective using the hs CLI

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

apply_hs_objective Rate-limited

apply_hs_objective 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "apply_hs_objective": {
      "limits": [
        {
          "counter": "apply_hs_objective_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Hammerspace Storage Management MCP Server, so you can run agents against it safely.

FAQ

Questions about apply_hs_objective

What does the apply_hs_objective tool do? +

Apply a Hammerspace objective using the hs CLI. It is categorised as a Execute tool in the Hammerspace Storage Management MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on apply_hs_objective? +

Register the Hammerspace Storage Management MCP Server MCP server in PolicyLayer and add a rule for apply_hs_objective: 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 Hammerspace Storage Management MCP Server. Nothing to install.

What risk level is apply_hs_objective? +

apply_hs_objective is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit apply_hs_objective? +

Yes. Add a rate_limit block to the apply_hs_objective 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.

How do I block apply_hs_objective completely? +

Set action: deny in the PolicyLayer policy for apply_hs_objective. 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.

What MCP server provides apply_hs_objective? +

apply_hs_objective is provided by the Hammerspace Storage Management MCP Server MCP server (mbloomhammerspace/mcp-1.5-main). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.