query_wrds · Wrds MCP: Risk & Policy

WHAT IT DOES

What query_wrds does on Wrds

AI agents invoke query_wrds to trigger actions in Wrds. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why query_wrds needs a policy

The tool name 'query_wrds' suggests it executes queries against the WRDS (Wharton Research Data Services) database. Given the server context includes 29 specialized tools for financial data access and this appears to be a general-purpose query tool, it likely executes arbitrary or natural-language-driven database queries.

From the tool's definition Tool name 'query_wrds' on a server providing 'natural language access to WRDS financial data' with tools that 'query bond history, credit ratings, financial metrics'. The description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

query_wrds Rate-limited

query_wrds stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "query_wrds": {
      "limits": [
        {
          "counter": "query_wrds_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Wrds, so you can run agents against it safely.

FAQ

Questions about query_wrds

What does the query_wrds tool do? +

query_wrds. It is categorised as a Execute tool in the Wrds MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on query_wrds? +

Register the Wrds MCP server in PolicyLayer and add a rule for query_wrds: 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 Wrds. Nothing to install.

What risk level is query_wrds? +

query_wrds is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit query_wrds? +

Yes. Add a rate_limit block to the query_wrds 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.

How do I block query_wrds completely? +

Set action: deny in the PolicyLayer policy for query_wrds. 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.

What MCP server provides query_wrds? +

query_wrds is provided by the Wrds MCP server (marianosalinas/wrds_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.