count
AI agents call count to retrieve information from Legacy Mongodb without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'count' tool on a read-only MongoDB server retrieves document count metadata. It has no side effects—no data is created, modified, or deleted. Count operations are safe to execute on AI agents. Low severity due to read-only nature and minimal blast radius (only information disclosure of collection sizes).
From the tool's definition Server description states 'read-only access' and 'query databases' safely. Tool name 'count' is a standard MongoDB read operation that returns document count without modification.
Attacks that exploit this kind of access
count. It is categorised as a Read tool in the Legacy Mongodb MCP Server, which means it retrieves data without modifying state.
Register the Legacy Mongodb MCP server in PolicyLayer and add a rule for count: 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 Legacy Mongodb. Nothing to install.
count 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 count 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 count. 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.
count is provided by the Legacy Mongodb MCP server (webxspark/legacy-mongodb-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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