userAssetInfoQuery

THE RISK

Low Risk

Why userAssetInfoQuery needs a policy

This tool retrieves account balance information without creating, modifying, deleting, or executing any transactions. It is purely informational and has no irreversible effects or financial impact beyond viewing existing data. The severity is low because exposure of this query tool allows an AI to view account balances but not move funds or make trades.

From the tool's definition Tool name includes 'Query' and description states 'Query coin balances' — a retrieval operation with no modification or side effects. The capability to 'query sub UID balance' confirms this is a data retrieval function.

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

POLICY

How to control userAssetInfoQuery

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

policy.json

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

userAssetInfoQuery 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 Bybit 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.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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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 userAssetInfoQuery

What does the userAssetInfoQuery tool do? +

Query coin balances across a single account type. Supports querying sub UID balance with master API key.\n-. It is categorised as a Read tool in the Bybit MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on userAssetInfoQuery? +

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

What risk level is userAssetInfoQuery? +

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

Can I rate-limit userAssetInfoQuery? +

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

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

userAssetInfoQuery is provided by the Bybit MCP Server MCP server (bybit-exchange/trading-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Bybit MCP Server tool call.

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

CHECK YOUR STACK →