tailpipe_source_list

THE RISK

Low Risk

Why tailpipe_source_list needs a policy

This tool lists/enumerates available data sources, which is a read-only query operation. It retrieves information about accessible Tailpipe sources without modifying, deleting, or executing any operations. The blast radius of misuse is minimal—an AI agent could only discover what data sources exist, not access their contents or cause changes.

From the tool's definition Tool name 'tailpipe_source_list' and description 'List all available Tailpipe data sources' indicate a retrieval operation with no side effects.

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

POLICY

How to control tailpipe_source_list

PolicyLayer is an MCP gateway — it sits between your AI agents and Tailpipe, and nothing reaches the server without passing your rules. This is the rule we recommend for tailpipe_source_list:

policy.json

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

tailpipe_source_list 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 Tailpipe — 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

Related tools and policies

More Tailpipe tools

Execute tailpipe_connect Initialize DuckDB using a Tailpipe init SQL script, optionally specifying a new init scrip Read tailpipe_partition_list List all Tailpipe partitions with their file counts and sizes. Read tailpipe_partition_show Get detailed information about a specific Tailpipe partition, including its configuration Read tailpipe_plugin_list List all installed Tailpipe plugins with their versions and associated partitions. Read tailpipe_plugin_show Get detailed information about a specific Tailpipe plugin, including its configuration and Read tailpipe_query Execute read-only SQL queries against cloud and security logs using DuckDB syntax. Results Read tailpipe_source_show Get detailed information about a specific Tailpipe data source, including its configuratio Read tailpipe_table_list List all available Tailpipe tables, including their schemas, descriptions, and column coun

All 10 Tailpipe tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 tailpipe_source_list

What does the tailpipe_source_list tool do? +

List all available Tailpipe data sources with their associated plugins. It is categorised as a Read tool in the Tailpipe MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on tailpipe_source_list? +

Register the Tailpipe MCP server in PolicyLayer and add a rule for tailpipe_source_list: 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 Tailpipe. Nothing to install.

What risk level is tailpipe_source_list? +

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

Can I rate-limit tailpipe_source_list? +

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

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

tailpipe_source_list is provided by the Tailpipe MCP server (turbot/tailpipe-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Tailpipe tool call.

Start from Tailpipe, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →