Create a new virtual sub-account under your master account. Sub-accounts are useful for separating trading strategies or managing funds for different purposes. ⚠️ Requires master account permissions.
AI agents use BinanceSubAccountCreate to create or update resources in Sperax Ecosystem Crypto & DeFI MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Sperax Ecosystem Crypto & DeFI MCP Server environment.
This tool creates a new sub-account resource, which is a data modification operation (Write category). It is not destructive since sub-accounts can be deleted or closed. It is not financial per se (no money moves), but creating sub-accounts could enable financial operations.
From the tool's definition Tool description states: 'Create a new virtual sub-account under your master account'. The verb 'Create' and the action of establishing a new account entity qualifies as a reversible write operation.
Documented attack patterns abuse exactly the kind of access BinanceSubAccountCreate 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 BinanceSubAccountCreate:
{
"version": "1",
"default": "deny",
"tools": {
"BinanceSubAccountCreate": {
"limits": [
{
"counter": "binancesubaccountcreate_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}BinanceSubAccountCreate stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Create a new virtual sub-account under your master account. Sub-accounts are useful for separating trading strategies or managing funds for different purposes. ⚠️ Requires master account permissions. It is categorised as a Write tool in the Sperax Ecosystem Crypto & DeFI MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Sperax Ecosystem Crypto & DeFI MCP Server MCP server in PolicyLayer and add a rule for BinanceSubAccountCreate: 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.
BinanceSubAccountCreate is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the BinanceSubAccountCreate 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 BinanceSubAccountCreate. 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.
BinanceSubAccountCreate 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.