freeze_sub_uid · Bybit MCP: Risk & Policy

WHAT IT DOES

What freeze_sub_uid does on Bybit

AI agents invoke freeze_sub_uid to trigger actions in Bybit. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why freeze_sub_uid needs a policy

This tool modifies the operational state of a sub-account (UID) by freezing or unfreezing it, which is a significant account management action. Freezing a sub UID would prevent it from trading or accessing funds, making it an Execute-level operation with high blast radius since it can disrupt trading activity for an entire sub-account.

From the tool's definition Freeze or unfreeze a sub UID

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

freeze_sub_uid Rate-limited

freeze_sub_uid stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "freeze_sub_uid": {
      "limits": [
        {
          "counter": "freeze_sub_uid_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about freeze_sub_uid

What does the freeze_sub_uid tool do? +

Freeze or unfreeze a sub UID. It is categorised as a Execute tool in the Bybit MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on freeze_sub_uid? +

Register the Bybit MCP server in PolicyLayer and add a rule for freeze_sub_uid: 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 Bybit. Nothing to install.

What risk level is freeze_sub_uid? +

freeze_sub_uid is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit freeze_sub_uid? +

Yes. Add a rate_limit block to the freeze_sub_uid 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 freeze_sub_uid completely? +

Set action: deny in the PolicyLayer policy for freeze_sub_uid. 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 freeze_sub_uid? +

freeze_sub_uid is provided by the Bybit MCP server (johnnywic/bybit-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.