List compartments under a parent (default: tenancy).
AI agents call list_compartments to retrieve information from OCI 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 compartment metadata from OCI without creating, modifying, deleting, or executing any operations. It is a standard read operation that retrieves organizational hierarchy information. The blast radius of misuse is minimal—an attacker gains visibility into OCI organizational structure but cannot alter or destroy resources.
From the tool's definition Tool name is 'list_compartments' and description states 'List compartments under a parent (default: tenancy)'. The verb 'list' indicates a read-only retrieval operation with no side effects.
Attacks that exploit this kind of access
List compartments under a parent (default: tenancy). It is categorised as a Read tool in the OCI MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OCI MCP Server MCP server in PolicyLayer and add a rule for list_compartments: 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 OCI MCP Server. Nothing to install.
list_compartments 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_compartments 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_compartments. 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_compartments is provided by the OCI MCP Server MCP server (sarthak-pansare/oci-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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