brale_create_external_address · Brale API MCP Server MCP

WHAT IT DOES

What brale_create_external_address does on Brale API MCP Server

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

WHY IT NEEDS A POLICY

Why brale_create_external_address needs a policy

This tool creates a new external address, which is a reversible modification to account state. While it operates in a financial context (stablecoin/blockchain system), it does not move funds, commit financial obligations, or trigger payments—it merely adds a wallet address to the account. This is Write category behavior.

From the tool's definition Tool name 'brale_create_external_address' and description 'Create a new external address (non-custodial wallet) for the account' indicate a create/write operation that modifies account configuration by adding a new external wallet address.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

brale_create_external_address Rate-limited

brale_create_external_address 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": {
    "brale_create_external_address": {
      "limits": [
        {
          "counter": "brale_create_external_address_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about brale_create_external_address

What does the brale_create_external_address tool do? +

Create a new external address (non-custodial wallet) for the account. It is categorised as a Write tool in the Brale API 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 brale_create_external_address? +

Register the Brale API MCP Server MCP server in PolicyLayer and add a rule for brale_create_external_address: 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 Brale API MCP Server. Nothing to install.

What risk level is brale_create_external_address? +

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

Can I rate-limit brale_create_external_address? +

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

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

brale_create_external_address is provided by the Brale API MCP Server MCP server (stablecoinxyz/brale-api-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.