AI agents call lookup_network to retrieve information from SIMcloud without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
msisdn | string | Yes | South African mobile number, for example 0821234567. |
Parameters from the server's own tool schema.
This tool retrieves network information from a phone number without creating, modifying, deleting, or executing any code. It has no financial impact and cannot cause irreversible changes. The blast radius of misuse is minimal—an attacker can only learn which carrier a phone number belongs to, which is typically non-sensitive public data. Classification as Read is appropriate.
From the tool's definition Tool name is 'lookup_network' and description states it 'Looks up the mobile network for a South African MSISDN' — a pure query/retrieval operation with no side effects.
Attacks that exploit this kind of access
Looks up the mobile network for a South African MSISDN. It is categorised as a Read tool in the SIMcloud MCP Server, which means it retrieves data without modifying state.
lookup_network accepts 1 parameter: msisdn. Required: msisdn. The full parameter table on this page comes from the server's own tool schema.
Register the SIMcloud MCP server in PolicyLayer and add a rule for lookup_network: 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 SIMcloud. Nothing to install.
lookup_network is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the lookup_network 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 lookup_network. 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.
lookup_network is provided by the SIMcloud MCP server (https://simcloud.co.za/api/mcp.php). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
lookup_network is one line of SIMcloud's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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