Get historical Fear & Greed Index for specified number of days as a tool.
AI agents call get_historical_fng_tool 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 purely queries and retrieves historical Fear & Greed Index data. It has no side effects, does not modify any state, execute code, delete data, or initiate financial transactions. It is a straightforward data retrieval operation, fitting the 'Read' category with low severity due to its informational nature and lack of system impact.
From the tool's definition Tool description states 'Get historical Fear & Greed Index for specified number of days' - retrieves historical data with no modification, creation, or deletion capabilities. No execution of code or financial transactions.
Documented attack patterns abuse exactly the kind of access get_historical_fng_tool 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 get_historical_fng_tool:
{
"version": "1",
"default": "deny",
"tools": {
"get_historical_fng_tool": {}
}
}get_historical_fng_tool is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get historical Fear & Greed Index for specified number of days as a tool. 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 get_historical_fng_tool: 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.
get_historical_fng_tool 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 get_historical_fng_tool 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 get_historical_fng_tool. 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.
get_historical_fng_tool 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.
Free to start. No card required.
1240 BNB Chain MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.