snmp_check

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/snmp-check.md

WHAT IT DOES

What snmp_check does on Mcp Nettools

AI agents call snmp_check 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 snmp_check is rated Low

This is a diagnostic read operation that queries system information via SNMP. It retrieves data (sysDescr) without side effects or state changes. The blast radius is minimal—a misconfigured query might probe an unintended host, but causes no damage or data loss. Severity is low because SNMP read operations with default credentials are reconnaissance-only and do not alter systems.

From the tool's definition Tool sends an SNMPv2c GetRequest to retrieve sysDescr (system description OID) and verifies reachability. Returns whether SNMP is reachable and raw response bytes length. No modification, deletion, or execution of arbitrary code occurs.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs snmp_check 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 snmp_check, this is the rule to start with:

snmp_check Allowed

snmp_check 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": {
    "snmp_check": {}
  }
}

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 snmp_check call is checked against it from then on.

FAQ

Questions about snmp_check

What does the snmp_check tool do? +

Send an SNMPv2c GetRequest for sysDescr (OID 1.3.6.1.2.1.1.1.0) over UDP and verify the response. community: SNMP community string (default 'public'). Returns whether SNMP is reachable and the raw response bytes length. 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 snmp_check? +

Register the Mcp Nettools MCP server in PolicyLayer and add a rule for snmp_check: 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 snmp_check? +

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

Can I rate-limit snmp_check? +

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

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

snmp_check 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.

KEEP EXPLORING

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