Lists all cache names in your Momento account
AI agents call list-caches to retrieve information from Momento MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only operation that retrieves metadata about existing caches. It does not create, modify, or delete any resources, nor does it execute code or trigger external operations. While it may reveal organizational information about caches, the impact of misuse is limited to information disclosure, making it low severity.
From the tool's definition The tool 'list-caches' retrieves and lists cache names without modification. The description states it 'Lists all cache names in your Momento account', which is a query operation with no side effects.
Attacks that exploit this kind of access
Lists all cache names in your Momento account. It is categorised as a Read tool in the Momento MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Momento MCP Server MCP server in PolicyLayer and add a rule for list-caches: 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 Momento MCP Server. Nothing to install.
list-caches 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-caches 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-caches. 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-caches is provided by the Momento MCP Server MCP server (momentohq/mcp-momento). 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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