AI agents call api_nfd_get_nfd_activity 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 retrieves historical activity or change records for NFD (Name for Domains or similar identifiers). It performs a read-only query operation that does not modify data, execute code, delete resources, or commit financial transactions. The blast radius of misuse is minimal—worst case an attacker could enumerate NFD activity records or access metadata that may already be publicly visible or authorized.
From the tool's definition The tool name contains 'get' and the description states 'Get activity/changes for NFDs', indicating data retrieval without modification or side effects.
Documented attack patterns abuse exactly the kind of access api_nfd_get_nfd_activity 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 api_nfd_get_nfd_activity:
{
"version": "1",
"default": "deny",
"tools": {
"api_nfd_get_nfd_activity": {}
}
}api_nfd_get_nfd_activity is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get activity/changes for NFDs. 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 api_nfd_get_nfd_activity: 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.
api_nfd_get_nfd_activity 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 api_nfd_get_nfd_activity 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 api_nfd_get_nfd_activity. 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.
api_nfd_get_nfd_activity 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.