Ortam değişkenlerinden keşfedilen veritabanı bağlantılarını listele
AI agents call list-connections to retrieve information from PostGIS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and enumerates existing database connections from environment configuration. While this is fundamentally a Read operation (no side effects), it has medium severity because exposing database connection details (hostnames, credentials, database names) could enable an attacker to pivot to direct database attacks or credential theft. However, it does not modify, execute, or destroy data.
From the tool's definition Tool name 'list-connections' and description indicating it 'lists database connections discovered from environment variables' — this is a retrieval operation with no modification or deletion.
Documented attack patterns abuse exactly the kind of access list-connections gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and PostGIS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list-connections:
{
"version": "1",
"default": "deny",
"tools": {
"list-connections": {}
}
}list-connections is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Ortam değişkenlerinden keşfedilen veritabanı bağlantılarını listele. It is categorised as a Read tool in the PostGIS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the PostGIS MCP Server 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 PostGIS MCP Server. 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 PostGIS MCP Server MCP server (receptopalak/postgis-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from PostGIS MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
25 PostGIS MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.