Critical Risk →

cancel_monitor

Cancel an active monitor by its UUID. The monitor stops firing notifications. Auth required (API key).

Part of the MERX - TRON Resource Exchange MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

merx-mcp Destructive

AI agents may call cancel_monitor to permanently remove or destroy resources in MERX - TRON Resource Exchange. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. Intercept blocks destructive tools by default and requires explicit human approval before enabling them.

Without a policy, an AI agent could call cancel_monitor in a loop, permanently destroying resources in MERX - TRON Resource Exchange. There is no undo for destructive operations. Intercept blocks this tool by default and only allows it when a human explicitly approves the action.

Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.

merx-tron-resource-exchange.yaml
tools:
  cancel_monitor:
    rules:
      - action: deny
        reason: "Blocked by default — enable with approval"

See the full MERX - TRON Resource Exchange policy for all 66 tools.

Tool Name cancel_monitor
Category Destructive
Risk Level Critical

View all 66 tools →

Agents calling destructive-class tools like cancel_monitor have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

Other tools in the Destructive risk category across the catalogue. The same policy patterns (deny, require_approval) apply to each.

cancel_monitor is one of the critical-risk operations in MERX - TRON Resource Exchange. For the full severity-focused view — only the critical-risk tools with their recommended policies — see the breakdown for this server, or browse all critical-risk tools across every MCP server.

What does the cancel_monitor tool do? +

Cancel an active monitor by its UUID. The monitor stops firing notifications. Auth required (API key).. It is categorised as a Destructive tool in the MERX - TRON Resource Exchange 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 cancel_monitor? +

Add a rule in your Intercept YAML policy under the tools section for cancel_monitor. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the MERX - TRON Resource Exchange MCP server.

What risk level is cancel_monitor? +

cancel_monitor 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 cancel_monitor? +

Yes. Add a rate_limit block to the cancel_monitor rule in your Intercept 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 cancel_monitor completely? +

Set action: deny in the Intercept policy for cancel_monitor. 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 cancel_monitor? +

cancel_monitor is provided by the MERX - TRON Resource Exchange MCP server (merx-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Let agents act without letting them run wild.

Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.

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