service_list

List system services and their status.

SERVERYaver SOURCEyaver-cli

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/io-github-kivanccakmak-yaver/service-list.md

WHAT IT DOES

What service_list does on Yaver

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

RISK

Why service_list is rated Low

This tool retrieves information about system services without changing state, executing commands, or triggering external operations. It is purely informational, making it a Read category tool. Severity is low because listing services exposes only system metadata that an attacker would typically discover through other means on a compromised device; the information itself carries minimal risk.

From the tool's definition Tool name is 'service_list' and description states 'List system services and their status' — a query operation with no modification or execution capability.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs service_list safely

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

service_list Allowed

service_list 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": {
    "service_list": {}
  }
}

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

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

FAQ

Questions about service_list

What does the service_list tool do? +

List system services and their status. It is categorised as a Read tool in the Yaver MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on service_list? +

Register the Yaver MCP server in PolicyLayer and add a rule for service_list: 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 Yaver. Nothing to install.

What risk level is service_list? +

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

Can I rate-limit service_list? +

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

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

service_list is provided by the Yaver MCP server (yaver-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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