check_jellyfin

Check Jellyfin media server health via GET /health. Returns health status and version from public system info.

SERVERMcp Nettools SOURCEaaronckj/mcp-nettools

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/aaronckj-mcp-nettools/check-jellyfin.md

WHAT IT DOES

What check_jellyfin does on Mcp Nettools

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

RISK

Why check_jellyfin is rated Low

This tool only retrieves and queries the health status of a Jellyfin media server without any side effects. It uses a standard GET request to a public health endpoint, making it a read operation. The low severity reflects minimal blast radius—obtaining health status information about a media server poses no significant security risk even if misused by an AI agent.

From the tool's definition Tool performs a GET request to /health endpoint which is explicitly a read-only health check operation. Description states it 'Returns health status and version from public system info' with no modification, deletion, or execution capabilities.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs check_jellyfin safely

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

check_jellyfin Allowed

check_jellyfin 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": {
    "check_jellyfin": {}
  }
}

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

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

FAQ

Questions about check_jellyfin

What does the check_jellyfin tool do? +

Check Jellyfin media server health via GET /health. Returns health status and version from public system info. It is categorised as a Read tool in the Mcp Nettools MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on check_jellyfin? +

Register the Mcp Nettools MCP server in PolicyLayer and add a rule for check_jellyfin: 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 Mcp Nettools. Nothing to install.

What risk level is check_jellyfin? +

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

Can I rate-limit check_jellyfin? +

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

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

check_jellyfin is provided by the Mcp Nettools MCP server (aaronckj/mcp-nettools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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