Sendpaper
Physical mail for AI agents
Hosted MCP Server
npx add-mcp 'https://sendmypaper.com/mcp'Installs into Claude Code, Codex, Cursor and more
Documentation
One sentence in. Done.
Ask your agent to send something. It confirms the address and wording, pays with your approval, and tells you when it's on its way. You don't have to open a website.
muse · sendpaper
Mail my mom, Dana Kim, a birthday postcard. She's at 12 Oak St, Austin TX 78701. Say I'll call Sunday.
✓ create_postcard 4×6 · "Happy birthday, Mom!" · $2.99
✓ pay_order Link · Visa •• 4242 · approved by you
Your postcard to Dana Kim is paid and goes out tomorrow. It should arrive in 3–5 days, and I'll let you know when it ships.
Pay per piece. No subscription.
Printing, envelope and USPS First-Class postage included. US addresses only.
First postcard free. Any size, no card needed. One per return address.Send one →
4×6
Postcard
$2.99
Size
4 × 6 in
Printing
Full-color front
Writing
Up to 600 characters
Postage
First-Class, included
Mailed
Within 1 business day
6×9
Postcard
$3.99
Size
6 × 9 in
Printing
Full-color front
Writing
Up to 600 characters
Postage
First-Class, included
Mailed
Within 1 business day
8.5×11
Letter
$4.99
Size
8.5 × 11 in, #10 envelope
Printing
Black & white, up to 3 pages
Writing
Up to about 9,000 characters
Postage
First-Class, included
Mailed
Within 1 business day
Need proof it arrived?
Send any letter by Certified Mail for a USPS tracking number and proof of delivery. Add a return receipt for the recipient's signature, which leases, courts and agencies often require.
$14.99Certified
$19.99+ return receipt
Your agent can pay, with your OK.
Sendpaper accepts Stripe's one-time agent payment tokens. You approve the amount and your card is never shared. Prefer to pay yourself? Every order has a checkout link too.
Questions
Is there a free trial?
Your first postcard is free, any size: one per return address. It's applied automatically, so you just confirm it on the order page with no card needed. See what senders say.
Can you send certified mail?
Yes. Letters can go by USPS Certified Mail ($14.99) with a tracking number and proof of delivery, or with a return receipt ($19.99) that adds the recipient's signature. Ask your agent to "send it certified", or choose it under Mailing on the web form.
Can my agent pay for me?
Yes, if you let it. Agents pay with a one-time Stripe token capped at the order's exact price, which you approve in your agent (for example through Stripe Link). Your card details are never shared. Or pay the checkout link yourself. Either way, nothing is mailed until it's paid.
Which agents work?
Anything that supports remote MCP servers over Streamable HTTP: Codex, Muse Code, Claude Code, Claude Desktop, claude.ai, ChatGPT developer mode, Cursor and VS Code. Everything else can use the REST API.
Where can you mail to?
US addresses, including Puerto Rico, US territories and APO/FPO/DPO military addresses.
What won't you print?
Threats, harassment, fraud, impersonation and obscene content, plus bulk marketing. See the content policy.
Is there a machine-readable description?
/llms.txt for language models, /openapi.json for the REST API, and the docs for everything else.