clear_account_override_tool · Plaid MCP: Risk & Policy

WHAT IT DOES

What clear_account_override_tool does on Plaid

AI agents use clear_account_override_tool to create or update resources in Plaid — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Plaid environment.

WHY IT NEEDS A POLICY

Why clear_account_override_tool needs a policy

This tool modifies stored account data by removing an APR override, which is a reversible write operation (the override could be re-added). It doesn't delete financial records or move money, but it does alter a configuration/setting that could affect financial calculations like interest rate displays or debt analysis.

From the tool's definition Remove any APR override for an account

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

clear_account_override_tool Rate-limited

clear_account_override_tool stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "clear_account_override_tool": {
      "limits": [
        {
          "counter": "clear_account_override_tool_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about clear_account_override_tool

What does the clear_account_override_tool tool do? +

Remove any APR override for an account. It is categorised as a Write tool in the Plaid MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on clear_account_override_tool? +

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

What risk level is clear_account_override_tool? +

clear_account_override_tool is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit clear_account_override_tool? +

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

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

clear_account_override_tool is provided by the Plaid MCP server (t-rhex/plaid-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.