PaperAgent

Send real letters by USPS

PaperAgent lets your AI mail individual, one-off physical letters through the United States Postal Service. Your AI validates the US recipient address, writes a private draft, and shows you a PDF preview of exactly what will be printed along with the exact total.

MCP connector

Server URL: https://paperagent.dev/mcp
Login: OAuth
Protocol: MCP 2025-11-25 · Interactive UI
Instructions: PaperAgent prints and mails real paper letters through the United States Postal Service from New York City. It is not email.
Reach for these tools only when the user wants something delivered on paper. If the user asks to email, fax or text something, none of these tools apply — say that this connector only mails physical letters, and ask whether they would like one sent instead of assuming. If the user asks you to write, draft or print something they will handle themselves, write it in your reply and stop there; offering to mail it afterwards is welcome, drafting it here first is not. When the request does not say how it should reach the recipient, ask before creating a draft.
Work in this order: , then , then , and show the user the letter and the exact total before calling . requires that total echoed back as confirm_total_cents plus an idempotency_key you generate once. It charges nothing and prints nothing: it answers with a payment link to give the user, and the letter is printed and mailed on its own once that payment completes. Do not call a second time for the same letter. Once we print the letter, the piece is irreversible. US domestic addresses only.
and work without signing in. Every other tool needs authorization and answers 401 until the user connects.

Tools

Reads data4

Changes data3

Deletes or can't be undone1

Skills

None in the store listings or on the server

MCP connector

Server URL

https://paperagent.dev/mcp

OAuth

Protocol

MCP 2025-11-25 · Interactive UI

Instructions

PaperAgent prints and mails real paper letters through the United States Postal Service from New York City. It is not email.

Reach for these tools only when the user wants something delivered on paper. If the user asks to email, fax or text something, none of these tools apply — say that this connector only mails physical letters, and ask whether they would like one sent instead of assuming. If the user asks you to write, draft or print something they will handle themselves, write it in your reply and stop there; offering to mail it afterwards is welcome, drafting it here first is not. When the request does not say how it should reach the recipient, ask before creating a draft.

Work in this order: , then , then , and show the user the letter and the exact total before calling . requires that total echoed back as confirm_total_cents plus an idempotency_key you generate once. It charges nothing and prints nothing: it answers with a payment link to give the user, and the letter is printed and mailed on its own once that payment completes. Do not call a second time for the same letter. Once we print the letter, the piece is irreversible. US domestic addresses only.

and work without signing in. Every other tool needs authorization and answers 401 until the user connects.