PaperAgent — Send Physical Mail

Mail one-off USPS letters from ChatGPT or Claude after you approve the preview and price. US only.

Hosted MCP Server

npx add-mcp 'https://paperagent.dev/mcp'

Installs into Claude Code, Codex, Cursor and more

Documentation

Source: https://paperagent.dev/

FROM PROMPT TO POSTMARK

A real letter. One less errand.

Tell your AI what you need to say. Approve the letter and price. We print, stamp, and mail it through USPS.

For AI agents: Read and follow the MCP and REST integration instructions at https://paperagent.dev/llms.txt before using PaperAgent.

Connect ChatGPT Try with Claude Try with Muse.aiGeminicoming soon

For MCP clients

Mailed within one business day · US addresses only

agent — dev.paperagent/letters

Mail this cancellation letter to my gym.

Drafted — one page to Apex Fitness in Brooklyn. Here's the exact cost, before anything sends.

→paperagent.send_letterto: Apex Fitness LLC · pages: 1 · service: first_classok

APEX FITNESS LLC 495 FLATBUSH AVE BROOKLYN NY 11225-4801

First-Class · 1 page

Standard letter — 6 pages included · $7.00

Total$7.00

Mailed within one business day

FIRST-CLASS MAIL

U.S. POSTAGE PAID

PAPERAGENT · NYC

APEX FITNESS LLC 495 FLATBUSH AVE BROOKLYN NY 11225-4801

#10 envelope · sealed · in the next mailbag

Send it for $7.00 plus tax?

›Message the agent…

CHECKOUTstripe

CARRIERUSPS

WORKS WITH

$7

One flat price — up to 6 pages, printed, stamped, mailed
1 day

Printed and handed to USPS within one business day
PDF

Preview the letter as a PDF before it prints
stripe

Secure checkout — payments handled by Stripe, in the chat

COMMON REASONS

Start with the letter you need to send.

Practical checklists and copyable prompts for sending a real USPS letter from ChatGPT or Claude.

[GYM MEMBERSHIP

HOW IT WORKS

You write it in your favorite AI. We do the paper part.

01 — YOU

You ask your AI

Like cancelling your gym membership — drafted, reviewed, and paid in the chat.

02 — US

FIRST-CLASS MAIL

U.S. POSTAGE PAID

PAPERAGENT · NYC

We print, seal, mail

Laser-printed in NYC, sealed in a #10 envelope, into the USPS collection box within one business day.

03 — YOU

ACCEPTEDEXPECTED THU

Your AI follows up

“Where is it now?” — it fetches tracking, as far as USPS actually knows.

PRICING

One letter, one published price.

STANDARDUSPS

$7.00

We print and mail your letter with USPS First-Class Mail and keep you updated by email.

✓Up to 6 pages, printed in black and white
✓Printed and mailed within one business day
✓Folded and sealed in an envelope
✓Email updates and an estimated delivery date when available
—No delivery confirmation

For everyday letters.

CERTIFIED MAILUSPS

$19.00

We print and mail your letter with USPS Certified Mail. Includes tracking, email updates, and the delivery date and time from the USPS delivery scan. No signature copy or Return Receipt.

Everything in Standard, plus:

✓USPS tracking number
✓Delivery date and time from USPS
✓Email updates

For letters where you want a tracking number and a delivery record.

Payments handled by stripe — charged only when you say yes.

See what each letter includes →

Mailed within one business day

Weekdays, excluding federal holidays. We promise induction, never a delivery date.

We never store the printed letter

The PDF is rebuilt at print time and never kept. Your letter’s text is deleted 90 days after it is mailed.

What we refuse to mail

Anything designed to look like official government or court mail, threats, and material we are not permitted to induct.