Sickle — every mailbox for your agent MCP Server

by sickle Your server? Claim it

answering

Sickle — every mailbox for your agent is answering right now. Last checked 10 min ago.

Gmail, Outlook, iCloud, Fastmail and any IMAP mailbox for your agent. Scoped OAuth, no send tool.

Uptime history 45 hours of history

45 hours agonow

100.0%

Uptime 24h

92 of 92 checks

—

Tools

hidden behind auth

136 ms

Response time

average over 24h

OAuth sign-in

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Sickle — every mailbox for your agent every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mail --transport http https://mcp.sickle.app

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "mail": {
      "url": "https://mcp.sickle.app"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mail]
url = "https://mcp.sickle.app"

.cursor/mcp.json

{
  "mcpServers": {
    "mail": {
      "url": "https://mcp.sickle.app"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mail": {
      "url": "https://mcp.sickle.app"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.sickle.app	streamable-http	sign-in	115 ms	10 min ago

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Sickle — every mailbox for your agent — questions

Answers built from our own checks of this server.

Why is there no tool list for Sickle — every mailbox for your agent?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is Sickle — every mailbox for your agent working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 136 ms. The bar chart above shows every period we have measured.

How do I connect Sickle — every mailbox for your agent?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to Sickle — every mailbox for your agent?

No API key is involved. Sickle — every mailbox for your agent answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is Sickle — every mailbox for your agent?

It answers our handshake in 136 ms on average, which is faster than 78% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.