cancel_deployment

THE RISK

Critical Risk

Why cancel_deployment needs a policy

Canceling a deployment is an irreversible action that halts a running process. While not a hard delete, it terminates a system state change in a way that cannot be undone automatically and would require explicit re-deployment to restore. This maps to Destructive rather than Execute because the consequence (stopping a deployment) is a definitive state change, not a reversible operation.

From the tool's definition Tool name 'cancel_deployment' combined with description 'Cancel a deployment which is currently building' indicates an irreversible operation that terminates an in-progress deployment.

Documented attack patterns abuse exactly the kind of access cancel_deployment gives an agent:

POLICY

How to control cancel_deployment

PolicyLayer is an MCP gateway — it sits between your AI agents and eToro MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for cancel_deployment:

policy.json

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

cancel_deployment disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register eToro MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 154 eToro MCP Server tools →

Destructive tools on other servers

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Go deeper

Critical-risk tools in eToro MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about cancel_deployment

What does the cancel_deployment tool do? +

Cancel a deployment which is currently building. It is categorised as a Destructive tool in the eToro MCP Server 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_deployment? +

Register the eToro MCP Server MCP server in PolicyLayer and add a rule for cancel_deployment: 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 eToro MCP Server. Nothing to install.

What risk level is cancel_deployment? +

cancel_deployment 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_deployment? +

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

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

cancel_deployment is provided by the eToro MCP Server MCP server (shlomico-tr/etoroportfoliomcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every eToro MCP Server tool call.

Start from eToro MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →