The real catalog of tools for AI agents

Send real pen-written letters, cards and postcards: quote, preview, order and track by mail.

Print and mail real letters worldwide from the EU, incl. registered mail. Quote, compose, send.

Design and send real letters, written in ink with a pen, in your brand, from your assistant.

The agentic layer of letters. Agents send real printed mail worldwide, German compliance built in.

Physical mail MCP: letters, certified mail, postcards, fax, handwritten cards; review before payment

Send real paper letters from AI chat: print, envelope, postage, delivery. Pay per letter.

Send real paper mail in France from your agent: letters, tracked and registered letters with AR.

Chase overdue invoices: reminder 1, reminder 2, final notice, escalation dates, aging.

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

Create and send invitations and letters in a sealed envelope, one personal link per guest.

E-signatures: send, track, remind, void and download envelopes; templates and reports.

Renders letters as print ready PDFs, DIN 5008 compliant for German window envelopes.

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

Give AI assistants hands: send real USPS letters via MCP.

Still work in progress

Calibrated probabilities, fair odds and value plays for Asian football, benchmarked vs Pinnacle.

Mail real US letters, postcards and certified mail from an agent, quoted before sending.

The open vocabulary of print for AI agents: terms, product envelopes, validation, fingerprint.

Behavioral verification intelligence for AI coding agents. 17 MCP tools. Local-first. MIT.

Search and act on Letter AI sales enablement content, deals, and call recordings.