Use this to change the physical SIM/eSIM card status at the SIM provider level, independent of the OCS subscriber lifecycle status. Statuses: ENABLED (normal operation), DISABLED (blocked at network level, subscriber cannot connect), DELETED (irrecoverably removes the SIM profile — use only to de...
Part of the Carrier MCP: Give Your AI Agent Global Connectivity server.
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AI agents may call change_sim_status to permanently remove or destroy resources in Carrier MCP: Give Your AI Agent Global Connectivity. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. PolicyLayer blocks destructive tools by default and requires explicit human approval before enabling them.
Without a policy, an AI agent could call change_sim_status in a loop, permanently destroying resources in Carrier MCP: Give Your AI Agent Global Connectivity. There is no undo for destructive operations. PolicyLayer 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.
{
"version": "1",
"default": "deny",
"hide": [
"change_sim_status"
]
}See the full Carrier MCP: Give Your AI Agent Global Connectivity policy for all 65 tools.
These attack patterns abuse exactly the kind of access change_sim_status gives an agent. Each links to the full case and the policy that stops it:
Other destructive tools across the catalogue. The same approach applies to each: deny by default, or require human approval.
Use this to change the physical SIM/eSIM card status at the SIM provider level, independent of the OCS subscriber lifecycle status. Statuses: ENABLED (normal operation), DISABLED (blocked at network level, subscriber cannot connect), DELETED (irrecoverably removes the SIM profile — use only to decommission). WARNING: DELETED is irreversible. Always use dry_run=true first. Internally resolves ICCID → numeric simId via a getSingleSubscriber call before forwarding to OCS. Params: iccid (subscriber identifier), simStatus ('ENABLED' | 'DISABLED' | 'DELETED'). Returns: updated SIM record with new status. Do NOT use this to change the subscriber's OCS lifecycle status — use modify_subscriber_status. Do NOT confuse DISABLED (reversible) with DELETED (irreversible).. It is categorised as a Destructive tool in the Carrier MCP: Give Your AI Agent Global Connectivity MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Carrier MCP: Give Your AI Agent Global Connectivity MCP server in PolicyLayer and add a rule for change_sim_status: 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 Carrier MCP: Give Your AI Agent Global Connectivity. Nothing to install.
change_sim_status is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the change_sim_status 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 change_sim_status. 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.
change_sim_status is provided by the Carrier MCP: Give Your AI Agent Global Connectivity MCP server (carrier/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 65 Carrier MCP: Give Your AI Agent Global Connectivity tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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