List all collections in the database
AI agents call mongo_list_collections to retrieve information from Mcp Database 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 lists collections, analogous to schema discovery (similar to describe_table and describe_view on the same server). It has no side effects, does not execute code, and cannot modify or delete data. The blast radius of misuse is minimal—an agent could only gain visibility into database structure, not access sensitive data values or perform destructive actions.
From the tool's definition Tool name 'mongo_list_collections' and description 'List all collections in the database' indicate a query operation that retrieves metadata about database collections without modifying or executing operations on data.
Attacks that exploit this kind of access
List all collections in the database. It is categorised as a Read tool in the Mcp Database MCP Server, which means it retrieves data without modifying state.
Register the Mcp Database 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 Mcp Database. 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 Mcp Database MCP server (nam088/mcp-database-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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