list_investment_positions

THE RISK

Low Risk

Why list_investment_positions needs a policy

The tool retrieves or queries investment position data without creating, modifying, deleting, or executing transactional operations. This is a Read operation. Severity is medium rather than low because the data concerns financial positions and counterparty information, which could be sensitive and enable downstream misuse if accessed by an untrusted agent.

From the tool's definition Tool name 'list_investment_positions' and description 'List the counterparty' indicate a retrieval/query operation with no modification.

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

POLICY

How to control list_investment_positions

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 list_investment_positions:

policy.json

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

list_investment_positions 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.

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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 list_investment_positions

What does the list_investment_positions tool do? +

List the counterparty. 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 list_investment_positions? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for list_investment_positions: 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 list_investment_positions? +

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

Can I rate-limit list_investment_positions? +

Yes. Add a rate_limit block to the list_investment_positions 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 list_investment_positions completely? +

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

list_investment_positions 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.

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