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 Sperax Ecosystem Crypto & DeFI 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 read-only information about which assets are supported for custodial transfers and settlements. It does not create, modify, delete, or execute any financial transactions. While it requires API key authentication, the actual operation is a simple lookup/query of static configuration data.
From the tool's definition Tool description explicitly states it 'Get list of assets' and 'Returns two lists' of supported assets with metadata. No modification, deletion, or execution of operations occurs.
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 Sperax Ecosystem Crypto & DeFI MCP Server, 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 Sperax Ecosystem Crypto & DeFI MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Sperax Ecosystem Crypto & DeFI MCP Server 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 Sperax Ecosystem Crypto & DeFI MCP Server. 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 Sperax Ecosystem Crypto & DeFI MCP Server MCP server (sperax/sperax-crypto-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Sperax Ecosystem Crypto & DeFI 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.
1318 Sperax Ecosystem Crypto & DeFI MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.