cancel_agent_task

Cancel a queued or running agent/background task.

SERVERStarfield SOURCE@adrata/starfield-mcp

Critical RISK CLASS

Category Destructive

Parameters 11 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/adrata-starfield-mcp/cancel-agent-task.md

WHAT IT DOES

What cancel_agent_task does on Starfield

AI agents call cancel_agent_task to permanently remove resources in Starfield, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

Parameter	Type	Required	Description
`id`	string	Yes

Parameters from the server's own tool schema.

RISK

Why cancel_agent_task is rated Critical

An AI agent that decides to call cancel_agent_task doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Starfield is gone. There is no undo for destructive operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs cancel_agent_task safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Starfield, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cancel_agent_task, this is the rule to start with:

cancel_agent_task Hidden

cancel_agent_task is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "cancel_agent_task"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Starfield, apply this rule, and every cancel_agent_task call is checked against it from then on.

FAQ

Questions about cancel_agent_task

What does the cancel_agent_task tool do? +

Cancel a queued or running agent/background task. It is categorised as a Destructive tool in the Starfield MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

What parameters does cancel_agent_task accept? +

cancel_agent_task accepts 1 parameter: id. Required: id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on cancel_agent_task? +

Register the Starfield MCP server in PolicyLayer and add a rule for cancel_agent_task: 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 Starfield. Nothing to install.

What risk level is cancel_agent_task? +

cancel_agent_task is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit cancel_agent_task? +

Yes. Add a rate_limit block to the cancel_agent_task 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.

How do I block cancel_agent_task completely? +

Set action: deny in the PolicyLayer policy for cancel_agent_task. 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.

What MCP server provides cancel_agent_task? +

cancel_agent_task is provided by the Starfield MCP server (@adrata/starfield-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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