List VRFs in a tenant
AI agents call list_vrfs to retrieve information from ACI MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays Virtual Routing and Forwarding (VRF) instances from a tenant in Cisco ACI. It performs a read-only query against the fabric configuration without modifying, executing, deleting, or committing any financial actions. The blast radius of misuse is minimal—an attacker could enumerate network configuration but cannot alter the infrastructure.
From the tool's definition Tool name 'list_vrfs' and description 'List VRFs in a tenant' indicate a query/retrieval operation with no side effects.
Attacks that exploit this kind of access
List VRFs in a tenant. It is categorised as a Read tool in the ACI MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ACI MCP Server MCP server in PolicyLayer and add a rule for list_vrfs: 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 ACI MCP Server. Nothing to install.
list_vrfs 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_vrfs 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_vrfs. 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_vrfs is provided by the ACI MCP Server MCP server (jim-coyne/aci_mcp). 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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