Lists all the variables (questions/fields) for a specific service catalog item.
AI agents call list_catalog_item_variables to retrieve information from Snow without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves metadata about service catalog item fields/questions. It performs a query operation that does not create, modify, delete, or execute any external operations. The blast radius of misuse is minimal—an agent could learn about catalog structure but cannot perform transactional actions or modify data.
From the tool's definition Tool name 'list_catalog_item_variables' uses the verb 'list', and description states it 'lists all the variables' for a catalog item. This is a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access list_catalog_item_variables gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Snow, and nothing reaches the server without passing your rules. This is the rule we recommend for list_catalog_item_variables:
{
"version": "1",
"default": "deny",
"tools": {
"list_catalog_item_variables": {}
}
}list_catalog_item_variables is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Lists all the variables (questions/fields) for a specific service catalog item. It is categorised as a Read tool in the Snow MCP Server, which means it retrieves data without modifying state.
Register the Snow MCP server in PolicyLayer and add a rule for list_catalog_item_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 Snow. Nothing to install.
list_catalog_item_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_catalog_item_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_catalog_item_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_catalog_item_variables is provided by the Snow MCP server (shunyaai/snow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Snow, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
88 Snow tools catalogued and risk-classified — across an index of 43,000+ MCP servers.