AI agents call jasper_list_users to retrieve information from Jasperreports without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns user account information without modifying, deleting, or executing any operations. It performs a straightforward data retrieval with optional filtering and pagination parameters, which is characteristic of a Read category tool.
From the tool's definition Tool name 'jasper_list_users' and description 'List user accounts with filtering and pagination' indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access jasper_list_users gives an agent:
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_list_users:
{
"version": "1",
"default": "deny",
"tools": {
"jasper_list_users": {}
}
}jasper_list_users is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List user accounts with filtering and pagination. It is categorised as a Read tool in the Jasperreports MCP Server, which means it retrieves data without modifying state.
Register the Jasperreports MCP server in PolicyLayer and add a rule for jasper_list_users: 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.
jasper_list_users is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the jasper_list_users 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 jasper_list_users. 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.
jasper_list_users 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.
Start from Jasperreports, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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37 Jasperreports tools catalogued and risk-classified — across an index of 43,000+ MCP servers.