get_wallet_balances

THE RISK

Low Risk

Why get_wallet_balances needs a policy

This tool retrieves wallet balance information without creating, modifying, deleting, or executing any transactions. It is a read-only query operation with no side effects. The low severity reflects that exposing balance data carries minimal risk of direct harm, though in a financial context the confidence is high that this is genuinely a Read operation based on the description.

From the tool's definition Tool name 'get_wallet_balances' and description 'Get balances for one or more wallets including SOL and token holdings' indicates a data retrieval operation with no modification or execution of external operations.

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

POLICY

How to control get_wallet_balances

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

policy.json

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

get_wallet_balances 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 Boosty MCP DeFi Platform — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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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_balances

What does the get_wallet_balances tool do? +

Get balances for one or more wallets including SOL and token holdings. It is categorised as a Read tool in the Boosty MCP DeFi Platform MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_wallet_balances? +

Register the Boosty MCP DeFi Platform MCP server in PolicyLayer and add a rule for get_wallet_balances: 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 Boosty MCP DeFi Platform. Nothing to install.

What risk level is get_wallet_balances? +

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

Can I rate-limit get_wallet_balances? +

Yes. Add a rate_limit block to the get_wallet_balances 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_balances completely? +

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

get_wallet_balances is provided by the Boosty MCP DeFi Platform MCP server (nirholas/boosty). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Boosty MCP DeFi Platform tool call.

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

CHECK YOUR STACK →