List all available doc sources. Always use this first.
AI agents call list_doc_sources to retrieve information from MCP LLMS-TXT Documentation Server 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 a list of available documentation sources without modifying, executing, or deleting any data. It is a pure read operation suitable for discovery, consistent with sibling tools (fetch_docs, get_docs) that also retrieve documentation. The low severity reflects minimal blast radius if misused — an agent listing doc sources causes no harmful side effects.
From the tool's definition Tool name is 'list_doc_sources' and description states 'List all available doc sources' — a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access list_doc_sources gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP LLMS-TXT Documentation Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_doc_sources:
{
"version": "1",
"default": "deny",
"tools": {
"list_doc_sources": {}
}
}list_doc_sources is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all available doc sources. Always use this first. It is categorised as a Read tool in the MCP LLMS-TXT Documentation Server MCP Server, which means it retrieves data without modifying state.
Register the MCP LLMS-TXT Documentation Server MCP server in PolicyLayer and add a rule for list_doc_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 MCP LLMS-TXT Documentation Server. Nothing to install.
list_doc_sources 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 list_doc_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.
Set action: deny in the PolicyLayer policy for list_doc_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.
list_doc_sources is provided by the MCP LLMS-TXT Documentation Server MCP server (teddylee777/mcpdoc). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP LLMS-TXT Documentation Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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3 MCP LLMS-TXT Documentation Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.