Get list of assets supported for custodial transfers and settlements. ⚠️ REQUIRES CUSTODIAL SOLUTION API KEY Returns two lists: - transferEligible: Assets that can be transferred FROM custodial partner - settlementEligible: Assets that can be settled TO custodial partner Each asset includes: - as...
AI agents call binance_us_custodial_supported_assets 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 configuration and asset information from a custodial service—purely a data retrieval operation (Read category). However, severity is elevated to 'medium' rather than 'low' because the data returned pertains to financial asset custody and settlement eligibility, which could be sensitive in a multi-tenant or AI agent context.
From the tool's definition Tool returns a 'Get list' of supported assets with read-only data (asset symbols, precision, networks). No modification, deletion, or execution occurs. The API key requirement and custodial context indicate access to financial account information.
Documented attack patterns abuse exactly the kind of access binance_us_custodial_supported_assets 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 binance_us_custodial_supported_assets:
{
"version": "1",
"default": "deny",
"tools": {
"binance_us_custodial_supported_assets": {}
}
}binance_us_custodial_supported_assets is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get list of assets supported for custodial transfers and settlements. ⚠️ REQUIRES CUSTODIAL SOLUTION API KEY Returns two lists: - transferEligible: Assets that can be transferred FROM custodial partner - settlementEligible: Assets that can be settled TO custodial partner Each asset includes: - asset: Asset symbol - precision: Decimal precision - network: Supported networks for the asset. 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 binance_us_custodial_supported_assets: 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.
binance_us_custodial_supported_assets 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_custodial_supported_assets 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_custodial_supported_assets. 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_custodial_supported_assets 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.