list_lines

List the project's versioned API lines (e.g. v1, v2), each with its endpoint count.

SERVEREchoRelay SOURCEhttps://mcp.echorelay.dev

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/dev-echorelay-management/list-lines.md

WHAT IT DOES

What list_lines does on EchoRelay

AI agents call list_lines to retrieve information from EchoRelay 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_lines is rated Low

This tool retrieves and queries metadata about API lines without creating, modifying, deleting, or executing any operations. It is purely informational and presents no risk of unintended side effects when misused by an AI agent.

From the tool's definition Tool name 'list_lines' and description 'List the project's versioned API lines' indicates a retrieval operation with no side effects. The verb 'list' and the phrase 'with its endpoint count' confirm querying existing data only.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_lines safely

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

list_lines Allowed

list_lines 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_lines": {}
  }
}

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

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

FAQ

Questions about list_lines

What does the list_lines tool do? +

List the project's versioned API lines (e.g. v1, v2), each with its endpoint count. It is categorised as a Read tool in the EchoRelay MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_lines? +

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

What risk level is list_lines? +

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

Can I rate-limit list_lines? +

Yes. Add a rate_limit block to the list_lines 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_lines completely? +

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

list_lines is provided by the EchoRelay MCP server (https://mcp.echorelay.dev). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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