create_view_vast

THE RISK

Medium Risk

Why create_view_vast needs a policy

This tool creates a new view, which is a reversible write operation that modifies the cluster configuration by adding a new logical data container. It does not delete data, execute arbitrary code, or involve financial transactions. The severity is medium because creating views could impact storage organization and access patterns, but the operation is reversible through deletion if needed.

From the tool's definition Tool name contains 'create_view' and description states 'Create a new VAST view', indicating creation of new data storage/organizational structures within the VAST cluster.

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

POLICY

How to control create_view_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_view_vast:

policy.json

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

create_view_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.

LIMIT THIS TOOL →

Free to start. No card required.

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_snapshot_vast Create a snapshot for a VAST view Write create_view_from_template_vast Create a new VAST view from a predefined template 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

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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_view_vast

What does the create_view_vast tool do? +

Create a new 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_view_vast? +

Register the VAST Admin MCP Server MCP server in PolicyLayer and add a rule for create_view_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_view_vast? +

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

Can I rate-limit create_view_vast? +

Yes. Add a rate_limit block to the create_view_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_view_vast completely? +

Set action: deny in the PolicyLayer policy for create_view_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_view_vast? +

create_view_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 →