job.cancel

Request cooperative cancellation of a queued or running job.

SERVERVisionmcp SOURCEjoshuahickscorp/visionmcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/visionmcp/job.cancel.md

WHAT IT DOES

What job.cancel does on Visionmcp

AI agents call job.cancel to retrieve information from Visionmcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why job.cancel is rated Low

Even though job.cancel only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs job.cancel safely

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

job.cancel Allowed

job.cancel is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "job.cancel": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about job.cancel

What does the job.cancel tool do? +

Request cooperative cancellation of a queued or running job. It is categorised as a Read tool in the Visionmcp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on job.cancel? +

Register the Vision MCP server in PolicyLayer and add a rule for job.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 Visionmcp. Nothing to install.

What risk level is job.cancel? +

job.cancel is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit job.cancel? +

Yes. Add a rate_limit block to the job.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.

How do I block job.cancel completely? +

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

What MCP server provides job.cancel? +

job.cancel is provided by the Vision MCP server (joshuahickscorp/visionmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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