Cancel all open orders on a symbol.
AI agents call cancelAllOpenOrders to permanently remove resources in Aster Finance MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly cancels all open orders for a given symbol, which is a destructive action that cannot be automatically reversed. While not directly moving funds like a Financial tool, cancelling all orders on a futures exchange can expose a position to immediate liquidation or force closure at market prices, resulting in significant financial loss.
From the tool's definition Tool name is 'cancelAllOpenOrders' and description states it will 'Cancel all open orders on a symbol.' This irreversibly cancels existing orders, an action that cannot be undone without manual re-entry.
Attacks that exploit this kind of access
Cancel all open orders on a symbol. It is categorised as a Destructive tool in the Aster Finance MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Aster Finance MCP Server MCP server in PolicyLayer and add a rule for cancelAllOpenOrders: 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 Aster Finance MCP Server. Nothing to install.
cancelAllOpenOrders is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the cancelAllOpenOrders 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 cancelAllOpenOrders. 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.
cancelAllOpenOrders is provided by the Aster Finance MCP Server MCP server (questflowai/aster-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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