Check if Binance.US system is under maintenance. Status 0 = normal, 1 = system maintenance. Requires API key authentication.
AI agents call binance_us_system_status to retrieve information from Binance US MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves system status information without side effects. It is a simple query operation that returns maintenance state, analogous to a health check endpoint. Despite requiring API key authentication, the action itself is read-only and poses minimal risk if misused—an agent querying system status repeatedly would have negligible impact.
From the tool's definition Tool description states it 'Check[s] if Binance.US system is under maintenance' and returns status values (0 = normal, 1 = system maintenance). The operation is a status query with no data modification, creation, deletion, code execution, or financial impact.
Documented attack patterns abuse exactly the kind of access binance_us_system_status gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Binance US MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for binance_us_system_status:
{
"version": "1",
"default": "deny",
"tools": {
"binance_us_system_status": {}
}
} binance_us_system_status is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Check if Binance.US system is under maintenance. Status 0 = normal, 1 = system maintenance. Requires API key authentication. It is categorised as a Read tool in the Binance US MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Binance US MCP Server MCP server in PolicyLayer and add a rule for binance_us_system_status: 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 Binance US MCP Server. Nothing to install.
binance_us_system_status is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the binance_us_system_status 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.
Set action: deny in the PolicyLayer policy for binance_us_system_status. 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.
binance_us_system_status is provided by the Binance US MCP Server MCP server (nirholas/binance-us-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Binance US MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
93 Binance US MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.