remove_whitelist · Basis MCP Server MCP: Risk & Policy

WHAT IT DOES

What remove_whitelist does on Basis MCP Server

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

WHY IT NEEDS A POLICY

Why remove_whitelist needs a policy

Removing a wallet from a whitelist modifies access control state on-chain. While potentially reversible (the wallet could be re-added), it can immediately restrict a user's ability to interact with a frozen token, making it a high-severity write operation. It is not fully destructive since the wallet could be re-whitelisted, but misuse could block legitimate users from accessing their funds.

From the tool's definition Remove wallet from frozen token whitelist

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

remove_whitelist Rate-limited

remove_whitelist 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": {
    "remove_whitelist": {
      "limits": [
        {
          "counter": "remove_whitelist_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 Basis MCP Server, so you can run agents against it safely.

FAQ

Questions about remove_whitelist

What does the remove_whitelist tool do? +

Remove wallet from frozen token whitelist. It is categorised as a Write tool in the Basis MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on remove_whitelist? +

Register the Basis MCP Server MCP server in PolicyLayer and add a rule for remove_whitelist: 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 Basis MCP Server. Nothing to install.

What risk level is remove_whitelist? +

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

Can I rate-limit remove_whitelist? +

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

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

remove_whitelist is provided by the Basis MCP Server MCP server (launch-on-basis/mcp-ts). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.