List all collections in DB
AI agents call mongo_list_collections to retrieve information from Database 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 enumerates collections in a MongoDB database. It has no side effects, does not execute arbitrary code, and does not modify or delete data. The blast radius is minimal—unauthorized listing of collections could expose schema information but causes no direct harm. The confidence is high because the intent is unambiguous from both the name and description.
From the tool's definition Tool name 'mongo_list_collections' and description 'List all collections in DB' indicate a query operation that retrieves metadata about collections without modifying or deleting data.
Attacks that exploit this kind of access
List all collections in DB. It is categorised as a Read tool in the Database MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Database MCP Server MCP server in PolicyLayer and add a rule for mongo_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 Database MCP Server. Nothing to install.
mongo_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 mongo_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 mongo_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.
mongo_list_collections is provided by the Database MCP Server MCP server (kunwarmahen/db-mcp-server). 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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