lobstermail

lobstermail is a skill for Claude Code, Codex from lobster-kit/mcp-server-lobstermail. It costs 27 tokens per session (2,928 once invoked), scanned C, original, MIT.

An email service made for AI agents that provides real email inboxes, receiving, and sending. It can be used through an MCP server, a Node.js package, or a REST API.

In plain words
What is it for?
Use it to create, list, check, wait for, read, send, or delete agent email inboxes, and to retrieve account details.
Why use it?
It lets an agent create and manage email inboxes without API keys, human signup, or additional configuration.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: positional $N argument; built for openclaw.

Good fit Use it to create, list, check, wait for, read, send, or delete agent email inboxes, and to retrieve account details.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lobster-kit/mcp-server-lobstermail/global
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add lobster-kit/mcp-server-lobstermail --skill global
Clone the repo
git clone --depth 1 https://github.com/lobster-kit/mcp-server-lobstermail

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for lobstermail

README.md
[![agentmods](https://agentmods.dev/badge/skills/lobster-kit/mcp-server-lobstermail/global/github.svg)](https://agentmods.dev/skills/lobster-kit/mcp-server-lobstermail/global)
Your own site
<a href="https://agentmods.dev/skills/lobster-kit/mcp-server-lobstermail/global"><img src="https://agentmods.dev/badge/skills/lobster-kit/mcp-server-lobstermail/global/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for lobstermail

Your own site · 80×15
<a href="https://agentmods.dev/skills/lobster-kit/mcp-server-lobstermail/global"><img src="https://agentmods.dev/badge/skills/lobster-kit/mcp-server-lobstermail/global.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,928 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00027 $0.02928
Opus 5 $0.00014 $0.01464
Sonnet 5 $0.00005 $0.00586
Haiku 4.5 $0.00003 $0.00293

Measured 9d ago against content hash e2a2821a25b3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade C, and why

lobstermail scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -sL https://api.lobstermail.ai/install | sh

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -sL https://api.lobstermail.ai/install | sh
skills/global/SKILL.md · 323 lines

How it starts

The opening of the file, as written. The whole thing — 323 lines — stays where its author put it; the contents beside it link to each section on GitHub.

LobsterMail

Email for AI agents. Create real @lobstermail.ai inboxes, receive email in real-time, and send email. No API keys, no human signup, no configuration.

Full docs: https://api.lobstermail.ai/v1/docs/guides


Install

curl -sL https://api.lobstermail.ai/install | sh

Or manually:

mkdir -p ~/.openclaw/skills/lobstermail
curl -sL https://api.lobstermail.ai/skill -o ~/.openclaw/skills/lobstermail/SKILL.md

Setup — Pick One

Option A: MCP Server (zero code, recommended)

Add to your MCP config (.mcp.json, claude_desktop_config.json, .cursor/mcp.json, etc.):

{
  "mcpServers": {
    "lobstermail": {
      "command": "npx",
      "args": ["@lobsterkit/lobstermail-mcp@latest"]
    }
  }
}

That's it. You now have these tools: create_inbox, check_inbox, wait_for_email, get_email, send_email, list_inboxes, delete_inbox, get_account. Use them directly — no code to write.

Option B: Node.js SDK

npm install @lobsterkit/lobstermail

Then write and run scripts using the SDK (see below).

Option C: REST API (any language)

No SDK needed. All endpoints are at https://api.lobstermail.ai. Sign up first:

curl -X POST https://api.lobstermail.ai/v1/signup

Response:

{"id": "acct_xxx", "token": "lm_sk_test_xxx"}

Use the token as Authorization: Bearer lm_sk_test_xxx for all subsequent requests. See the full API spec at https://api.lobstermail.ai/v1/docs/openapi.


Quick Start (SDK)

import { LobsterMail } from '@lobsterkit/lobstermail';

const lm = await LobsterMail.create();
const inbox = await lm.createSmartInbox({ name: 'My Agent', org: 'Acme' });
console.log(inbox.address); // e.g. [email protected]

No API keys. No configuration. LobsterMail.create() auto-signs up and persists the token to ~/.lobstermail/token. Set LOBSTERMAIL_TOKEN env var to skip file persistence.


Prompt Suggestions

Try asking your agent:

Read the full file on GitHub · 323 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 323 lines · 27 tokens per session scan C e2a2821a25b3

Subscribe to this mod's changes

lobstermail is a skill published in the GitHub repository lobster-kit/mcp-server-lobstermail (0 stars, last pushed 5mo ago), licensed MIT. It adds 27 tokens to every session and 2,928 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.