AI agents call show-collections to retrieve information from Ravendb without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays metadata about existing collections without modifying, deleting, or executing any code. It is a straightforward Read operation analogous to SHOW TABLES or LIST COLLECTIONS in database systems, presenting minimal risk even if misused by an AI agent.
From the tool's definition The tool name and description explicitly indicate a list/retrieval operation: 'List available collections in the current database' performs a read-only query of database metadata with no side effects.
Attacks that exploit this kind of access
List available collections in the current database. It is categorised as a Read tool in the Ravendb MCP Server, which means it retrieves data without modifying state.
Register the Ravendb MCP server in PolicyLayer and add a rule for show-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 Ravendb. Nothing to install.
show-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 show-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 show-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.
show-collections is provided by the Ravendb MCP server (johnib/ravendb-mcp). 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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