jasper_get_permissions

THE RISK

Low Risk

Why jasper_get_permissions needs a policy

This tool retrieves permission information about a JasperReports resource. Getting/querying data is a Read operation. No side effects, data modifications, deletions, code execution, or financial impact occur.

From the tool's definition Tool name is 'jasper_get_permissions' and description states 'Get permissions for a resource' — both indicate a retrieval operation with no modification of state.

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

POLICY

How to control jasper_get_permissions

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_get_permissions:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "jasper_get_permissions": {}
  }
}

jasper_get_permissions is read-only, so it stays allowed — but 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.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about jasper_get_permissions

What does the jasper_get_permissions tool do? +

Get permissions for a resource. It is categorised as a Read tool in the Jasperreports MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on jasper_get_permissions? +

Register the Jasperreports MCP server in PolicyLayer and add a rule for jasper_get_permissions: 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_get_permissions? +

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

Can I rate-limit jasper_get_permissions? +

Yes. Add a rate_limit block to the jasper_get_permissions 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_get_permissions completely? +

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

jasper_get_permissions 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 →