list_sources

List content sources configured on the Ludus server.

SERVERLudus FastMCP SOURCEtjnull/ludus-fastmcp

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/tjnull-ludus-fastmcp/list-sources.md

WHAT IT DOES

What list_sources does on Ludus FastMCP

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

RISK

Why list_sources is rated Low

Tool retrieves source configuration data with no modification, deletion, or execution capability.

From the tool's definition List content sources configured on the Ludus server.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_sources safely

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

list_sources Allowed

list_sources 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": {
    "list_sources": {}
  }
}

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

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

FAQ

Questions about list_sources

What does the list_sources tool do? +

List content sources configured on the Ludus server. It is categorised as a Read tool in the Ludus FastMCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_sources? +

Register the Ludus Fast MCP server in PolicyLayer and add a rule for list_sources: 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 Ludus FastMCP. Nothing to install.

What risk level is list_sources? +

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

Can I rate-limit list_sources? +

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

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

list_sources is provided by the Ludus Fast MCP server (tjnull/ludus-fastmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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