AI agents call list_connections to retrieve information from Querywise 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 existing database connection configurations, which is a non-destructive read operation. There is no ability to modify, execute queries, or delete connections (separate tools handle those operations). The blast radius is minimal—it exposes connection metadata but does not execute commands or alter state.
From the tool's definition Tool name 'list_connections' indicates a query/enumeration operation. The server description states it is 'Read-only by default' and provides a mechanism to manage database connections. The 'list' verb denotes data retrieval with no modification.
Attacks that exploit this kind of access
list_connections. It is categorised as a Read tool in the Querywise MCP Server, which means it retrieves data without modifying state.
Register the Querywise MCP server in PolicyLayer and add a rule for list_connections: 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 Querywise. Nothing to install.
list_connections 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_connections 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_connections. 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_connections is provided by the Querywise MCP server (kosminus/querywise-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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