Get the current index price for the underlying asset. The index price is used as a reference for options pricing.
AI agents call BinanceOptionsIndex to retrieve information from BNB Chain MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool fetches reference data (index prices) for options pricing without performing any state changes, executing code, or moving funds. It is a read-only query operation with minimal blast radius if misused by an AI agent—at worst, it returns incorrect pricing data that could inform a decision, but does not execute transactions or modify any data.
From the tool's definition Tool retrieves the current index price for an underlying asset. No modifications, deletions, or financial transactions occur. Action verb is 'get' with purely informational purpose.
Documented attack patterns abuse exactly the kind of access BinanceOptionsIndex gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and BNB Chain MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for BinanceOptionsIndex:
{
"version": "1",
"default": "deny",
"tools": {
"BinanceOptionsIndex": {}
}
}BinanceOptionsIndex is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the current index price for the underlying asset. The index price is used as a reference for options pricing. It is categorised as a Read tool in the BNB Chain MCP MCP Server, which means it retrieves data without modifying state.
Register the BNB Chain MCP server in PolicyLayer and add a rule for BinanceOptionsIndex: 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 BNB Chain MCP. Nothing to install.
BinanceOptionsIndex 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 BinanceOptionsIndex 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 BinanceOptionsIndex. 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.
BinanceOptionsIndex is provided by the BNB Chain MCP server (nirholas/bnbchain-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 1240 BNB Chain MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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1240 BNB Chain MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.