jasper_cancel_execution

THE RISK

High Risk

Why jasper_cancel_execution needs a policy

Cancelling a running execution triggers an active server-side operation to terminate an in-progress process. This is an Execute-category action as it affects an ongoing operation. While it terminates something, the data itself is not deleted or irreversibly destroyed — the report can be re-run — so Destructive is not appropriate. Severity is medium since misuse could disrupt legitimate reporting workflows.

From the tool's definition Cancel a running asynchronous report execution

Documented attack patterns abuse exactly the kind of access jasper_cancel_execution gives an agent:

POLICY

How to control jasper_cancel_execution

PolicyLayer is an MCP gateway — it sits between your AI agents and Jasperreports, and nothing reaches the server without passing your rules. This is the rule we recommend for jasper_cancel_execution:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "jasper_cancel_execution": {
      "limits": [
        {
          "counter": "jasper_cancel_execution_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

jasper_cancel_execution stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register Jasperreports — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Jasperreports tools

Destructive jasper_delete_job Delete a scheduled job Destructive jasper_delete_resource Delete a resource from JasperReports Server Execute jasper_run_job_now Execute a scheduled job immediately Execute jasper_run_report_async Start asynchronous report execution and return execution ID for tracking Execute jasper_run_report_sync Execute a report synchronously and return the generated content Write jasper_create_job Create a scheduled report job Write jasper_create_role Create a new role Write jasper_create_user Create a new user account

All 37 Jasperreports tools →

Execute tools on other servers

Android Forensics ADB MCP Server adb_shell_command EMBA-MCP run_emba_scan Frida Game Hacking MCP remove_breakpoint Procmon request_elevation

Go deeper

High-risk tools in Jasperreports → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about jasper_cancel_execution

What does the jasper_cancel_execution tool do? +

Cancel a running asynchronous report execution. It is categorised as a Execute tool in the Jasperreports MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on jasper_cancel_execution? +

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

What risk level is jasper_cancel_execution? +

jasper_cancel_execution is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit jasper_cancel_execution? +

Yes. Add a rate_limit block to the jasper_cancel_execution 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 jasper_cancel_execution completely? +

Set action: deny in the PolicyLayer policy for jasper_cancel_execution. 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 jasper_cancel_execution? +

jasper_cancel_execution is provided by the Jasperreports MCP server (mr-wolf-gb/jasperreports-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Jasperreports tool call.

Start from Jasperreports, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →