Physical mail in one command
Mail a paper letter online. You, or your agent.
Real letters anywhere in the Czech Republic — no printer, no envelope, no queue. We print, envelope, and Česká pošta delivers. Ordinary or registered.
Email: 0.12% replies · Letter: 4.4% · 36×Send a letter now
Write it → preview it → pay. From 50 CZK, firm price up front.
Write a letter ↓for agentsConnect your agent
Claude, Cursor, ChatGPT… Three steps, two minutes. First letter needs no credit or subscription.
Setup guide ↓// Send a letter
Preview
This exact PDF will be printed and mailed. Check the address and content.
After payment the letter mails automatically. Registered letters come with a tracking number.
// Connect your agent — 3 steps
Postbot is an MCP server. Paste one URL into your AI app and your agent can mail a real letter with the send_letter_cz tool.
① Paste the server URL
Pick your app and copy:
claude mcp add --transport http postbot https://postbot.cz/mcp
Settings → Connectors → Add custom connector URL: https://postbot.cz/mcp
Settings → MCP → Add new MCP server URL: https://postbot.cz/mcp (Streamable HTTP)
Settings → Connectors → Advanced → Developer mode Add connector: https://postbot.cz/mcp
npm i -g @postbot/cli posta send letter.md --to-name "Jan Novák" --to-zip "110 00"
② Send the first letter
Tell your agent: “Send a registered letter to Jan Novák, Dlouhá 5, 110 00 Praha…” The agent composes the letter and hands you a payment link (from 50 CZK). You click, pay by card, the letter mails. No prepaid credit, no subscription.
③ (Optional) Credit for more letters
Sending often? Sign in with Google, top up credit (min 500 CZK), and the agent sends without a card each time. With auto-recharge it never stalls.
agent → send_letter_cz({...})
postbot → 402: rails.oneoff.payUrl (110 CZK)
agent: “Letter's ready — pay here: …”
you: [click, pay by card]
postbot → ✉ dispatched · tracking RR1234567CZ
What the agent can and can't do
- Without your click or prepaid credit, the agent can't spend a single koruna.
- Every letter has a firm price computed up front from the rendered PDF.
- Everything sent is visible on /account — including the tracking number.
llms.txt · mcp.json · openapi.json · auth.md
// Pricing
One-off
from 50 CZK / letter
- No account, no sign-up
- Firm price up front from the PDF preview
- Card payment (Stripe); the letter mails right after payment
Credit
top-up from 500 CZK
- For agents and frequent senders — no card per letter
- Auto-recharge: the agent never stalls
- History and tracking on your account