MCP server

Agent Letter Desk Official

com.agentletterdesk/letter-desk

Checked 26 Oct 2026, 08:29 UTC · It answered and asked for a sign-in

Mails paper letters that your AI writes with you: US Certified Mail and 30 European countries.

Signs in with your accountVerified publisher: agentletterdesk.com

https://agentletterdesk.com/mcp

At a glance

Type: MCP server
Publisher: agentletterdesk.com (verified by the MCP Registry)
Status: Signs in with your account
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http letter-desk https://agentletterdesk.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.letter-desk]
url = "https://agentletterdesk.com/mcp"

Gemini CLI

{"mcpServers":{"letter-desk":{"httpUrl":"https://agentletterdesk.com/mcp"}}}

Cursor

{"mcpServers":{"letter-desk":{"url":"https://agentletterdesk.com/mcp"}}}

VS Code

{"servers":{"letter-desk":{"type":"http","url":"https://agentletterdesk.com/mcp"}}}

Antigravity

agy mcp add letter-desk https://agentletterdesk.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"letter-desk","server_url":"https://agentletterdesk.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"letter-desk","server_url":"https://agentletterdesk.com/mcp"}

Signs in with your account: your agent app opens a sign-in page the first time you use it.

Print and Mail Company
Print and mail real letters worldwide from the EU, incl. registered mail. Quote, compose, send.
Sendpaper
Your agent sends real postcards and letters. You approve; we print and mail.
Piloxa
Prepare USPS Certified Mail letters from any AI assistant; a person reviews, pays and authorizes.
Mail by Pony
Print and mail real letters through USPS. Write, preview the exact printed proof, then pay or send.
PaperAgent — Send Physical Mail
Mail one-off USPS letters from ChatGPT or Claude after you approve the preview and price. US only.
The Stochastic Parrot
Span-grounded audits of how US outlets covered the same story, quotes checkable at the source.
Lob MCP by usefulapi
Verify US & international addresses and send physical mail (postcards, letters, checks) via Lob.
DirectMailAmerica
Send one or many U.S. letters, Certified Mail and postcards; manage both email-to-mail services.

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