Switch between one-way mode (mode=0) and hedge mode (mode=3).\nOnly USDT perpetual supports hedge mode. Either symbol or coin must be provided.\n\nAgent hint: Use this to switch between one-way (mode=0) and hedge/two-way (mode=3) position mode.\nOnly USDT perpetual contracts support two-way mode....
AI agents use switchPositionMode to create or update resources in Bybit MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Bybit MCP Server environment.
This tool modifies trading account settings (position mode) on the Bybit exchange in a reversible manner. While it changes state, the modification is not destructive—the mode can be switched back. It does not execute trades or delete data. The high severity reflects that improper mode switching could affect position management strategy and limit trading capabilities, particularly if positions exist during the switch.
From the tool's definition Tool description states "Switch between one-way mode (mode=0) and hedge mode (mode=3)" and agent hint confirms "Use this to switch between one-way (mode=0) and hedge/two-way (mode=3) position mode." This modifies account configuration settings on a…
Documented attack patterns abuse exactly the kind of access switchPositionMode gives an agent:
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 switchPositionMode:
{
"version": "1",
"default": "deny",
"tools": {
"switchPositionMode": {
"limits": [
{
"counter": "switchpositionmode_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}switchPositionMode 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.
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Switch between one-way mode (mode=0) and hedge mode (mode=3).\nOnly USDT perpetual supports hedge mode. Either symbol or coin must be provided.\n\nAgent hint: Use this to switch between one-way (mode=0) and hedge/two-way (mode=3) position mode.\nOnly USDT perpetual contracts support two-way mode. Ensure no open positions or orders exist on the symbol before switching.\nEither symbol or coin must be provided; symbol takes priority. 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.
Register the Bybit MCP Server MCP server in PolicyLayer and add a rule for switchPositionMode: 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.
switchPositionMode 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 switchPositionMode 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 switchPositionMode. 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.
switchPositionMode is provided by the Bybit MCP Server MCP server (bybit-exchange/trading-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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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326 Bybit MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.