get_snapshot

A read tool on the Ha Nexus Agent MCP server.

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/get-snapshot.md

WHAT IT DOES

What get_snapshot does on Ha Nexus Agent

AI agents call get_snapshot 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 get_snapshot is rated Low

Snapshot retrieval is a read operation that queries system state without side effects. The empty description reduces confidence but the name strongly suggests data retrieval rather than modification, execution, or destructive action. In Home Assistant context, snapshots typically capture current device/automation states for viewing purposes.

From the tool's definition Tool name 'get_snapshot' indicates retrieval of a snapshot/state, consistent with query operations. Description is empty, preventing direct confirmation of function.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

get_snapshot Allowed

get_snapshot 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": {
    "get_snapshot": {}
  }
}

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 get_snapshot call is checked against it from then on.

FAQ

Questions about get_snapshot

What does the get_snapshot tool do? +

get_snapshot is a read tool on the Ha Nexus Agent MCP server. 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 get_snapshot? +

Register the Ha Nexus Agent MCP server in PolicyLayer and add a rule for get_snapshot: 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 get_snapshot? +

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

Can I rate-limit get_snapshot? +

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

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

get_snapshot 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.

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