switch_position_mode

THE RISK

Medium Risk

Why switch_position_mode needs a policy

This tool modifies account settings that directly impact trading strategy execution and position management. While it doesn't execute trades itself, switching position modes alters the account state and can affect how subsequent trades behave. It is reversible (can switch back), so it is Write rather than Execute or Destructive.

From the tool's definition 'Switch between one-way mode (net position) and hedge mode (separate long/short positions)' — this modifies account configuration that changes how positions are managed and affects position entry/exit behavior.

Documented attack patterns abuse exactly the kind of access switch_position_mode gives an agent:

POLICY

How to control switch_position_mode

PolicyLayer is an MCP gateway — it sits between your AI agents and Bybit MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for switch_position_mode:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "switch_position_mode": {
      "limits": [
        {
          "counter": "switch_position_mode_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

switch_position_mode 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.

Create a free account and register Bybit MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Go deeper

Govern customer-ops agents → PII redaction, approval on external messages, and no-bulk-delete rules on the records agents change.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about switch_position_mode

What does the switch_position_mode tool do? +

Switch between one-way mode (net position) and hedge mode (separate long/short positions). Hedge mode allows simultaneous long and short positions on the same symbol. It is categorised as a Write tool in the Bybit MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on switch_position_mode? +

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

What risk level is switch_position_mode? +

switch_position_mode is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit switch_position_mode? +

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

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

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

Enforce policy on every Bybit MCP Server tool call.

Start from Bybit MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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