update_dashboard_resource
Update the URL or type of an existing Lovelace resource.
This record as markdown: /tools/fistacho-ha-nexus-agent/update-dashboard-resource.md
What update_dashboard_resource does on Ha Nexus Agent
AI agents use update_dashboard_resource to create or update resources in Ha Nexus Agent, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ha Nexus Agent environment.
Why update_dashboard_resource is rated Medium
This tool modifies existing dashboard configuration (Lovelace resources) reversibly — the change can be undone by updating again to the original values. It does not delete data (Destructive), does not execute arbitrary code (Execute), and does not move money (Financial). It is Write because it creates or modifies data reversibly.
From the tool's definition Update the URL or type of an existing Lovelace resource — the verb 'update' indicates modification of existing data, and the ability to change URLs or types of dashboard resources could affect the presentation and functionality of the home automation UI.
Attacks that exploit this kind of access
The rule that runs update_dashboard_resource 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 update_dashboard_resource, this is the rule to start with:
update_dashboard_resource stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Ha Nexus Agent, apply this rule, and every update_dashboard_resource call is checked against it from then on.
Questions about update_dashboard_resource
Update the URL or type of an existing Lovelace resource. It is categorised as a Write tool in the Ha Nexus Agent MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ha Nexus Agent MCP server in PolicyLayer and add a rule for update_dashboard_resource: 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.
update_dashboard_resource is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the update_dashboard_resource 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.
Set action: deny in the PolicyLayer policy for update_dashboard_resource. 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.
update_dashboard_resource 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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