create_snapshot_vast

THE RISK

Medium Risk

Why create_snapshot_vast needs a policy

Creating a snapshot is a write operation that generates new metadata/data structures in the VAST system. It is reversible (snapshots can be deleted) and does not permanently destroy data or execute arbitrary code, so it falls under Write rather than Destructive or Execute.

From the tool's definition Tool name 'create_snapshot_vast' and description 'Create a snapshot for a VAST view' indicate a create operation that modifies system state by generating a snapshot object.

Documented attack patterns abuse exactly the kind of access create_snapshot_vast gives an agent:

POLICY

How to control create_snapshot_vast

PolicyLayer is an MCP gateway — it sits between your AI agents and VAST Admin MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_snapshot_vast:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_snapshot_vast": {
      "limits": [
        {
          "counter": "create_snapshot_vast_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

create_snapshot_vast stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register VAST Admin MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

Related tools and policies

More VAST Admin MCP Server tools

Execute create_support_bundle_vast Create a support bundle on a VAST cluster for diagnostics and troubleshooting Write create_clone_vast Create a clone from a snapshot Write create_quota_vast Create or update quota for a specific path and tenant Write create_view_from_template_vast Create a new VAST view from a predefined template Write create_view_vast Create a new VAST view Read describe_tool_vast Get tool schema with examples and accepted formats Read list_clusters_vast Retrieve information about configured VAST clusters Read list_dataflow_diagram_vast Show dataflow topology as a visual Mermaid diagram: Hosts -> CNodes -> Views with bandwidt

All 16 VAST Admin MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about create_snapshot_vast

What does the create_snapshot_vast tool do? +

Create a snapshot for a VAST view. It is categorised as a Write tool in the VAST Admin MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_snapshot_vast? +

Register the VAST Admin MCP Server MCP server in PolicyLayer and add a rule for create_snapshot_vast: 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 VAST Admin MCP Server. Nothing to install.

What risk level is create_snapshot_vast? +

create_snapshot_vast is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_snapshot_vast? +

Yes. Add a rate_limit block to the create_snapshot_vast 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 create_snapshot_vast completely? +

Set action: deny in the PolicyLayer policy for create_snapshot_vast. 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 create_snapshot_vast? +

create_snapshot_vast is provided by the VAST Admin MCP Server MCP server (vast-data/vast-admin-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every VAST Admin MCP Server tool call.

Start from VAST Admin MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →