Lists all variables in the specified workspace
AI agents call list-variables to retrieve information from Terrakube 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 data about variables without modifying, deleting, or executing any operations. It is a read-only query operation with minimal security risk, as it only exposes existing variable metadata within a workspace.
From the tool's definition Tool name 'list-variables' and description 'Lists all variables in the specified workspace' indicate a query operation with no side effects.
Attacks that exploit this kind of access
Lists all variables in the specified workspace. It is categorised as a Read tool in the Terrakube MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Terrakube MCP Server MCP server in PolicyLayer and add a rule for list-variables: 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 Terrakube MCP Server. Nothing to install.
list-variables 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-variables 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-variables. 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-variables is provided by the Terrakube MCP Server MCP server (terrakube-io/mcp-server-terrakube). 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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