list_inbox

List all emails in the inbox. Returns the most recent emails with sender, subject, date, and read status. Optionally filter by read/unread status.

SERVERNitrostack SOURCEnitrocloudofficial/nitrostack

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/nitrostack/list-inbox.md

WHAT IT DOES

What list_inbox does on Nitrostack

AI agents call list_inbox to retrieve information from Nitrostack 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_inbox is rated Low

Tool retrieves email metadata without modification, deletion, or execution.

From the tool's definition List all emails in the inbox. Returns sender, subject, date, read status.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_inbox safely

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

list_inbox Allowed

list_inbox 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_inbox": {}
  }
}

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

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

FAQ

Questions about list_inbox

What does the list_inbox tool do? +

List all emails in the inbox. Returns the most recent emails with sender, subject, date, and read status. Optionally filter by read/unread status. It is categorised as a Read tool in the Nitrostack MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_inbox? +

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

What risk level is list_inbox? +

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

Can I rate-limit list_inbox? +

Yes. Add a rate_limit block to the list_inbox 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_inbox completely? +

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

list_inbox is provided by the Nitrostack MCP server (nitrocloudofficial/nitrostack). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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