Fetch cube metadata (no cards)
AI agents call get_cube_metadata to retrieve information from CubeCobra 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 cube metadata from CubeCobra's API without creating, modifying, or deleting any data. It is a query operation with no destructive, write, or execute capabilities. The limited scope (metadata only) and non-destructive nature place it firmly in the Read category with low severity and high confidence.
From the tool's definition Tool name 'get_cube_metadata' combined with description 'Fetch cube metadata (no cards)' indicates retrieval of cube information without modification.
Attacks that exploit this kind of access
Fetch cube metadata (no cards). It is categorised as a Read tool in the CubeCobra MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CubeCobra MCP Server MCP server in PolicyLayer and add a rule for get_cube_metadata: 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 CubeCobra MCP Server. Nothing to install.
get_cube_metadata 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 get_cube_metadata 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 get_cube_metadata. 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.
get_cube_metadata is provided by the CubeCobra MCP Server MCP server (plrdev/cubecobra-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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