List visible MongoDB collections in one database. Pass
AI agents call list-collections to retrieve information from Askdb without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about available collections without creating, modifying, deleting, or executing operations. It has minimal blast radius: an agent could learn the database schema structure, but cannot manipulate data or execute code. The sandbox isolation and field-level control mentioned in the server description further limit risk.
From the tool's definition Tool name is 'list-collections' and description indicates it 'List[s] visible MongoDB collections in one database' — a pure query/enumeration operation with no side effects or data modification.
Documented attack patterns abuse exactly the kind of access list-collections gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Askdb, and nothing reaches the server without passing your rules. This is the rule we recommend for list-collections:
{
"version": "1",
"default": "deny",
"tools": {
"list-collections": {}
}
}list-collections is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List visible MongoDB collections in one database. Pass. It is categorised as a Read tool in the Askdb MCP Server, which means it retrieves data without modifying state.
Register the Askdb MCP server in PolicyLayer and add a rule for list-collections: 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 Askdb. Nothing to install.
list-collections 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-collections 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-collections. 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-collections is provided by the Askdb MCP server (mgorabbani/askdb). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Askdb, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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10 Askdb tools catalogued and risk-classified — across an index of 43,000+ MCP servers.