get_wallet_address

THE RISK

Low Risk

Why get_wallet_address needs a policy

This tool queries and returns the address of an already-configured wallet—a simple information retrieval operation. It has no side effects, does not transfer funds, does not execute code, and does not modify any data. The severity is low because knowing a wallet address is public information on blockchains and provides no direct attack surface on its own.

From the tool's definition Tool name 'get_wallet_address' and description 'Get the address of the configured wallet. Use this to verify which wallet is active.' indicate a read-only operation that retrieves wallet address information without modifying state or executing transactions.

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

POLICY

How to control get_wallet_address

PolicyLayer is an MCP gateway — it sits between your AI agents and EVM MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_wallet_address:

policy.json

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

get_wallet_address 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 EVM MCP Server — 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

Related tools and policies

More EVM MCP Server tools

Financial transfer_erc20 Transfer ERC20 tokens to an address. Uses the configured wallet. Financial transfer_native Transfer native tokens (ETH, MATIC, etc.) to an address. Uses the configured wallet. Financial approve_token_spending Approve a spender (contract) to spend tokens on your behalf. Required before interacting w Execute sign_message Sign an arbitrary message using the configured wallet. Useful for authentication (SIWE), m Execute sign_typed_data Sign structured data (EIP-712) using the configured wallet. Used for gasless transactions, Execute write_contract Execute state-changing functions on a smart contract. Automatically fetches ABI from block Read wait_for_transaction Wait for a transaction to be confirmed (mined). Polls the network until confirmation. Read get_allowance Check the allowance granted to a spender for a token. This tells you how much of a token a

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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 →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_wallet_address

What does the get_wallet_address tool do? +

Get the address of the configured wallet. Use this to verify which wallet is active. It is categorised as a Read tool in the EVM MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_wallet_address? +

Register the EVM MCP Server MCP server in PolicyLayer and add a rule for get_wallet_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 EVM MCP Server. Nothing to install.

What risk level is get_wallet_address? +

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

Can I rate-limit get_wallet_address? +

Yes. Add a rate_limit block to the get_wallet_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 get_wallet_address completely? +

Set action: deny in the PolicyLayer policy for get_wallet_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 get_wallet_address? +

get_wallet_address is provided by the EVM MCP Server MCP server (mcpdotdirect/evm-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every EVM MCP Server tool call.

Start from EVM MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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