media_cancel_run
取消属于本次 Agent 的指定任务；必须明确声明取消意图，远端运行中任务不会调用全局中断。
This record as markdown: /tools/dutydeck/media-cancel-run.md
What media_cancel_run does on DutyDeck
AI agents call media_cancel_run to permanently remove resources in DutyDeck, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why media_cancel_run is rated Critical
An AI agent that decides to call media_cancel_run doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from DutyDeck is gone. There is no undo for destructive operations.
Attacks that exploit this kind of access
The rule that runs media_cancel_run safely
PolicyLayer is an MCP gateway: it sits between your AI agents and DutyDeck, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For media_cancel_run, this is the rule to start with:
media_cancel_run 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 DutyDeck, apply this rule, and every media_cancel_run call is checked against it from then on.
Questions about media_cancel_run
取消属于本次 Agent 的指定任务；必须明确声明取消意图，远端运行中任务不会调用全局中断。. It is categorised as a Destructive tool in the DutyDeck MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the DutyDeck MCP server in PolicyLayer and add a rule for media_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 DutyDeck. Nothing to install.
media_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 media_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 media_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.
media_cancel_run is provided by the DutyDeck MCP server (taokoplay/DutyDeck). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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