check_vault

A read tool on the Mcp Nettools MCP server.

SERVERMcp Nettools SOURCEaaronckj/mcp-nettools

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aaronckj-mcp-nettools/check-vault.md

WHAT IT DOES

What check_vault does on Mcp Nettools

AI agents call check_vault to retrieve information from Mcp Nettools without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why check_vault is rated Low

The 'check_' prefix on sibling tools indicates monitoring/diagnostic queries rather than modifications or destructive actions. However, vaults typically store secrets and sensitive credentials. Even read access to a vault could expose sensitive data if misused by an agent, justifying medium severity.

From the tool's definition Tool name 'check_vault' suggests a read/query operation on a vault system (likely HashiCorp Vault or similar secrets management). The description is empty, making definitive classification difficult.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs check_vault safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Nettools, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For check_vault, this is the rule to start with:

check_vault Allowed

check_vault is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "check_vault": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Nettools, apply this rule, and every check_vault call is checked against it from then on.

FAQ

Questions about check_vault

What does the check_vault tool do? +

check_vault is a read tool on the Mcp Nettools MCP server. It is categorised as a Read tool in the Mcp Nettools MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on check_vault? +

Register the Mcp Nettools MCP server in PolicyLayer and add a rule for check_vault: 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 Mcp Nettools. Nothing to install.

What risk level is check_vault? +

check_vault is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit check_vault? +

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

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

check_vault is provided by the Mcp Nettools MCP server (aaronckj/mcp-nettools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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