ping_ha

Check if Home Assistant is reachable.

SERVERHa Nexus Agent SOURCEfistacho/ha-nexus-agent

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/fistacho-ha-nexus-agent/ping-ha.md

WHAT IT DOES

What ping_ha does on Ha Nexus Agent

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

RISK

Why ping_ha is rated Low

This tool queries the availability/reachability status of the Home Assistant server without retrieving user data, executing commands, or modifying system state. It is a diagnostic read operation with negligible blast radius if misused.

From the tool's definition Tool name 'ping_ha' and description 'Check if Home Assistant is reachable' indicate a network status check with no side effects or state modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ping_ha safely

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

ping_ha Allowed

ping_ha 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": {
    "ping_ha": {}
  }
}

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

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

FAQ

Questions about ping_ha

What does the ping_ha tool do? +

Check if Home Assistant is reachable. It is categorised as a Read tool in the Ha Nexus Agent MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on ping_ha? +

Register the Ha Nexus Agent MCP server in PolicyLayer and add a rule for ping_ha: 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 Ha Nexus Agent. Nothing to install.

What risk level is ping_ha? +

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

Can I rate-limit ping_ha? +

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

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

ping_ha is provided by the Ha Nexus Agent MCP server (fistacho/ha-nexus-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Ha Nexus Agent, and thousands of servers like it.

This server

All 276 Ha Nexus Agent tools →

Across the catalogue

The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →