hl_cancel_order · YOSO Agent SDK MCP Server MCP

WHAT IT DOES

What hl_cancel_order does on YOSO Agent SDK MCP Server

AI agents use hl_cancel_order to commit financial operations through YOSO Agent SDK MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.

WHY IT NEEDS A POLICY

Why hl_cancel_order needs a policy

Cancelling an open order on a trading platform (Hyperliquid) is a financial operation that directly affects trading positions and financial obligations. While it prevents a trade from executing, it is a financial market action that can have significant monetary consequences depending on market conditions.

From the tool's definition Cancel an open order on Hyperliquid

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

hl_cancel_order Approval-gated

Any call to hl_cancel_order is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hl_cancel_order": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches YOSO Agent SDK MCP Server, so you can run agents against it safely.

FAQ

Questions about hl_cancel_order

What does the hl_cancel_order tool do? +

Cancel an open order on Hyperliquid. It is categorised as a Financial tool in the YOSO Agent SDK MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on hl_cancel_order? +

Register the YOSO Agent SDK MCP Server MCP server in PolicyLayer and add a rule for hl_cancel_order: 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 YOSO Agent SDK MCP Server. Nothing to install.

What risk level is hl_cancel_order? +

hl_cancel_order is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit hl_cancel_order? +

Yes. Add a rate_limit block to the hl_cancel_order 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.

How do I block hl_cancel_order completely? +

Set action: deny in the PolicyLayer policy for hl_cancel_order. 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.

What MCP server provides hl_cancel_order? +

hl_cancel_order is provided by the YOSO Agent SDK MCP Server MCP server (yosoagents/agent-sdk). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.