delete_card

Delete a card by id. HA's WS handler returns an empty payload on success.

SERVERHa Nexus Agent SOURCEfistacho/ha-nexus-agent

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/fistacho-ha-nexus-agent/delete-card.md

WHAT IT DOES

What delete_card does on Ha Nexus Agent

AI agents call delete_card to permanently remove resources in Ha Nexus Agent, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why delete_card is rated Critical

This tool irreversibly removes data (a card) from the Home Assistant dashboard. Deletion cannot be undone without manual restoration or backups. While the blast radius is limited to dashboard UI configuration (not system-critical), the action is definitively destructive and irreversible, making it more severe than Write (which is reversible).

From the tool's definition 'Delete a card by id' — the tool performs an irreversible deletion operation. The description explicitly states it deletes a card, and the phrase 'HA's WS handler returns an empty payload on success' confirms the action is committed.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

delete_card Hidden

delete_card is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_card"
  ]
}

RESTRICT 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 delete_card call is checked against it from then on.

FAQ

Questions about delete_card

What does the delete_card tool do? +

Delete a card by id. HA's WS handler returns an empty payload on success. It is categorised as a Destructive tool in the Ha Nexus Agent MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_card? +

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

delete_card is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_card? +

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

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

delete_card 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 → Critical-risk tools on this server →

Across the catalogue

sms_delete_message on Twilio SMS MCP Server →delete_snapshot on Why Did You Render →calendar_delete_event on Templonix Lite MCP Server →delete_addon_domain on cPanel MCP Server → All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern database agents →Blast radius →Tool call approval →