List compute shapes available in a compartment.
AI agents call list_shapes 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 OCI to enumerate available compute instance shapes (machine types/configurations) within a compartment. It has no capability to create, modify, delete, or execute operations—it simply returns informational data. The blast radius of misuse is minimal since listing available shapes cannot harm infrastructure or data. Classification as Read is appropriate.
From the tool's definition Tool name 'list_shapes' and description 'List compute shapes available in a compartment' indicate a query/retrieval operation with no side effects. The verb 'list' is a classic Read operation that retrieves metadata about available compute resources.
Attacks that exploit this kind of access
List compute shapes available in a compartment. 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_shapes: 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_shapes 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_shapes 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_shapes. 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_shapes 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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