get_account_overdraft_limits

THE RISK

Low Risk

Why get_account_overdraft_limits needs a policy

This tool retrieves overdraft limit information from an account via Open Finance, which is a read-only query operation. It does not move money, modify accounts, execute arbitrary code, or delete data. The primary risk is information disclosure of financial account details, which is a concern but limited in blast radius compared to write or execute operations.

From the tool's definition Tool name is 'get_account_overdraft_limits' and description states 'Get account overdraft (limites) via Open Finance' — uses 'Get' verb indicating retrieval with 'via Open Finance' indicating query of external financial data without modification.

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

POLICY

How to control get_account_overdraft_limits

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 get_account_overdraft_limits:

policy.json

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

get_account_overdraft_limits 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 →
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FAQ

Questions about get_account_overdraft_limits

What does the get_account_overdraft_limits tool do? +

Get account overdraft (limites) via Open Finance. 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 get_account_overdraft_limits? +

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

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

Can I rate-limit get_account_overdraft_limits? +

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

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

get_account_overdraft_limits 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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