list_subscription_plans

List the available subscription plans (Free, Pro, Scale) with monthly EUR price, credit allowance, per-project RPM cap, and how many active projects the plan includes. Read-only.

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-subscription-plans.md

WHAT IT DOES

What list_subscription_plans does on EchoRelay

AI agents call list_subscription_plans 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_subscription_plans is rated Low

The tool retrieves and displays publicly available subscription plan information (pricing, features, limits). It performs no modifications, deletions, executions, or financial transactions. Read-only classification is explicitly confirmed in the description. No blast radius from misuse—an AI agent listing subscription plans causes no harm or data loss.

From the tool's definition Tool name 'list_subscription_plans' and description states 'List the available subscription plans... Read-only.' This is a pure information retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_subscription_plans 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_subscription_plans, this is the rule to start with:

list_subscription_plans Allowed

list_subscription_plans 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_subscription_plans": {}
  }
}

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_subscription_plans call is checked against it from then on.

FAQ

Questions about list_subscription_plans

What does the list_subscription_plans tool do? +

List the available subscription plans (Free, Pro, Scale) with monthly EUR price, credit allowance, per-project RPM cap, and how many active projects the plan includes. Read-only. 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_subscription_plans? +

Register the EchoRelay MCP server in PolicyLayer and add a rule for list_subscription_plans: 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_subscription_plans? +

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

Can I rate-limit list_subscription_plans? +

Yes. Add a rate_limit block to the list_subscription_plans 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_subscription_plans completely? +

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

list_subscription_plans 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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