Cancel a running workflow.
AI agents call wes_cancel_run to permanently remove resources in NGS360 MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Cancelling a running workflow is an irreversible action — the in-progress execution is terminated and cannot be resumed. This falls under Destructive as the workflow state is permanently altered (cancelled), with a high blast radius since cancelling a bioinformatics workflow mid-run could result in loss of computation progress, partial results, and wasted resources.
From the tool's definition Cancel a running workflow
Attacks that exploit this kind of access
Cancel a running workflow. It is categorised as a Destructive tool in the NGS360 MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the NGS360 MCP Server MCP server in PolicyLayer and add a rule for wes_cancel_run: 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 NGS360 MCP Server. Nothing to install.
wes_cancel_run 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 wes_cancel_run 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 wes_cancel_run. 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.
wes_cancel_run is provided by the NGS360 MCP Server MCP server (ngs360/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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