echo_mcp_roots

Echoes back the MCP roots provided by the client

SERVERMcp Test Servers SOURCEmsfeldstein/mcp-test-servers

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/mcp-test-servers/echo-mcp-roots.md

WHAT IT DOES

What echo_mcp_roots does on Mcp Test Servers

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

RISK

Why echo_mcp_roots is rated Low

This tool retrieves and returns configuration data (MCP roots) that was already provided by the client. It performs no modification, deletion, code execution, or financial operations. It is purely informational/diagnostic in nature, making it a Read operation with minimal security risk.

From the tool's definition Tool name 'echo_mcp_roots' and description 'Echoes back the MCP roots provided by the client' indicate a retrieval/reflection operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs echo_mcp_roots safely

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

echo_mcp_roots Allowed

echo_mcp_roots 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": {
    "echo_mcp_roots": {}
  }
}

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

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

FAQ

Questions about echo_mcp_roots

What does the echo_mcp_roots tool do? +

Echoes back the MCP roots provided by the client. It is categorised as a Read tool in the Mcp Test Servers MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on echo_mcp_roots? +

Register the Mcp Test Servers MCP server in PolicyLayer and add a rule for echo_mcp_roots: 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 Test Servers. Nothing to install.

What risk level is echo_mcp_roots? +

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

Can I rate-limit echo_mcp_roots? +

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

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

echo_mcp_roots is provided by the Mcp Test Servers MCP server (msfeldstein/mcp-test-servers). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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