AI agents call list_placement_groups to retrieve information from Linode MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns a list of existing placement groups from the Linode infrastructure. It performs a read-only operation that retrieves data without creating, modifying, deleting, or executing any actions. The blast radius of misuse is minimal—an AI agent could only enumerate placement groups, which does not compromise infrastructure security or cause data loss.
From the tool's definition Tool name 'list_placement_groups' and description 'List all placement groups' indicate a retrieval operation with no modification or side effects.
Documented attack patterns abuse exactly the kind of access list_placement_groups gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Linode MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_placement_groups:
{
"version": "1",
"default": "deny",
"tools": {
"list_placement_groups": {}
}
}list_placement_groups is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all placement groups. It is categorised as a Read tool in the Linode MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Linode MCP Server MCP server in PolicyLayer and add a rule for list_placement_groups: 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 Linode MCP Server. Nothing to install.
list_placement_groups 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 list_placement_groups 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 list_placement_groups. 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.
list_placement_groups is provided by the Linode MCP Server MCP server (takashito/linode-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Linode MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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416 Linode MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.