wsCancelOrder
Cancel an existing unfilled or partially filled order via WebSocket on Bybit V5 unified account.\n\nIMPORTANT: This tool places/modifies real orders via WebSocket. Confirm symbol, side, quantity, and price with the user before calling. Response is an acknowledgment only; use subscribeOrder or RES...
This record as markdown: /tools/bybit-exchange-trading-mcp/wscancelorder.md
What wsCancelOrder does on Bybit MCP Server
AI agents call wsCancelOrder to permanently remove resources in Bybit MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why wsCancelOrder is rated Critical
Cancelling an order is an irreversible action — once cancelled, the order cannot be reinstated. The tool acts on live trading infrastructure with real financial assets, making misuse high severity. While it doesn't directly move money, cancellation of orders is a one-way destructive operation on existing trading state, placing it above Execute/Write in severity.
From the tool's definition Cancel an existing unfilled or partially filled order via WebSocket on Bybit V5 unified account
Attacks that exploit this kind of access
The rule that runs wsCancelOrder safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Bybit MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For wsCancelOrder, this is the rule to start with:
wsCancelOrder is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Bybit MCP Server, apply this rule, and every wsCancelOrder call is checked against it from then on.
Questions about wsCancelOrder
Cancel an existing unfilled or partially filled order via WebSocket on Bybit V5 unified account.\n\nIMPORTANT: This tool places/modifies real orders via WebSocket. Confirm symbol, side, quantity, and price with the user before calling. Response is an acknowledgment only; use subscribeOrder or REST endpoints to verify actual order status. It is categorised as a Destructive tool in the Bybit MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Bybit MCP Server MCP server in PolicyLayer and add a rule for wsCancelOrder: 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.
wsCancelOrder 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 wsCancelOrder 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 wsCancelOrder. 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.
wsCancelOrder 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.
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