switch_wallet · Blockchain Payment MCP Server MCP

WHAT IT DOES

What switch_wallet does on Blockchain Payment MCP Server

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

WHY IT NEEDS A POLICY

Why switch_wallet needs a policy

This is a Write operation because it modifies the system's state by changing which wallet is in use, but the change is fully reversible. Although the server handles financial operations (send_transaction, payments), the switch_wallet tool itself does not move money or create financial obligations—it merely changes context.

From the tool's definition Tool name 'switch_wallet' and description indicate it changes the currently active wallet selection. This modifies application state (which wallet is 'current') reversibly—the prior wallet selection can be restored by switching back.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

switch_wallet Rate-limited

switch_wallet 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": {
    "switch_wallet": {
      "limits": [
        {
          "counter": "switch_wallet_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 Blockchain Payment MCP Server, so you can run agents against it safely.

FAQ

Questions about switch_wallet

What does the switch_wallet tool do? +

切换当前使用的钱包. It is categorised as a Write tool in the Blockchain Payment 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 switch_wallet? +

Register the Blockchain Payment MCP Server MCP server in PolicyLayer and add a rule for switch_wallet: 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 Blockchain Payment MCP Server. Nothing to install.

What risk level is switch_wallet? +

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

Can I rate-limit switch_wallet? +

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

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

switch_wallet is provided by the Blockchain Payment MCP Server MCP server (logos-42/blockchain-payment-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.