query_allowlist

THE RISK

Low Risk

Why query_allowlist needs a policy

This tool performs a lookup/query of existing allowlist data with no side effects. It retrieves information about whether a value is allowlisted but does not create, modify, delete, or execute any operations. The blast radius of misuse is minimal — an agent querying an allowlist cannot cause financial, destructive, or operational harm.

From the tool's definition Tool name is 'query_allowlist' and description states 'Check whether a value is currently on the Konduto allowlist' — a read-only query operation that retrieves allowlist status without modifying any data.

Documented attack patterns abuse exactly the kind of access query_allowlist gives an agent:

POLICY

How to control query_allowlist

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for query_allowlist:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "query_allowlist": {}
  }
}

query_allowlist is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Mcp Ap2 — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about query_allowlist

What does the query_allowlist tool do? +

Check whether a value is currently on the Konduto allowlist. Konduto. It is categorised as a Read tool in the Mcp Ap2 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on query_allowlist? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for query_allowlist: 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 Mcp Ap2. Nothing to install.

What risk level is query_allowlist? +

query_allowlist is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit query_allowlist? +

Yes. Add a rate_limit block to the query_allowlist 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_allowlist completely? +

Set action: deny in the PolicyLayer policy for query_allowlist. 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_allowlist? +

query_allowlist is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →