workflows-cancel
AI agents call workflows-cancel to permanently remove resources in MCP Search Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The name 'workflows-cancel' strongly implies terminating or stopping a running workflow, which is typically an irreversible action (a cancelled workflow cannot be un-cancelled). In the context of sibling tools like 'workflows-run', 'workflows-resume', and 'workflows-runs-list', cancellation would abort an in-progress workflow execution. This is classified as Destructive due to the irreversible nature of cancellation.
From the tool's definition Tool name 'workflows-cancel' — description is empty/uninformative
Attacks that exploit this kind of access
workflows-cancel. It is categorised as a Destructive tool in the MCP Search Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the MCP Search Server MCP server in PolicyLayer and add a rule for workflows-cancel: 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 MCP Search Server. Nothing to install.
workflows-cancel 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 workflows-cancel 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 workflows-cancel. 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.
workflows-cancel is provided by the MCP Search Server MCP server (nghiauet/mcp-agent). 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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