Send real Deutsche Post letters from your AI assistant
FrankKi MCP is a remote hosted Model Context Protocol server that lets AI assistants and agents draft, price, send, track and manage real Deutsche Post letters programmatically. It is DACH native and ships worldwide via Pingen. Launching July 2026, you connect your assistant to https://mcp.frankki.app and it puts physical mail on paper.
https://mcp.frankki.appfrom July 2026Join the early access waitlist
Be among the first to connect your AI assistant to real Deutsche Post mail when FrankKi MCP launches in July 2026.
How do I connect FrankKi MCP
To connect FrankKi MCP you add the remote server https://mcp.frankki.app (available from July 2026) to your MCP client and authenticate with a Bearer JWT. The server speaks streamable HTTP, so any compliant assistant such as ChatGPT, Claude, Cursor or VS Code can call its 27 tools to draft, price and send real letters.
https://mcp.frankki.appStreamable HTTP transport. Under the hood every request is a POST to /api/mcp/v1.
Connect procedure
- 1Request early access and receive your Bearer JWT (from July 2026).
- 2Open your MCP client (ChatGPT, Claude, Cursor or VS Code) and add a remote MCP server.
- 3Paste the endpoint https://mcp.frankki.app as the server URL.
- 4Set the Authorization header to your Bearer JWT.
- 5Call letter_create_draft to build a letter, then order_send to put it in the post.
Authentication today is a Bearer JWT you set as the Authorization header. OAuth 2.1 one-click connect is in preparation and will be added without breaking existing JWT clients.
Which tools does the server have
FrankKi MCP exposes 27 tools split into read tools that return state and action tools that change it. Read tools such as shipping_quote, order_status and letter_list never cost money or send mail. Action tools such as letter_create_draft (free) and order_send create drafts, send letters and manage approvals. The split derives from each tool mutating flag.
| Tool | Access | Purpose |
|---|---|---|
| Profil und Wallet | ||
profile_get | Read | Liest dein Partnerprofil und deine Kontodaten. |
wallet_balance | Read | Zeigt dein aktuelles Wallet-Guthaben in Euro. |
wallet_topup_link | Read | Gibt einen Stripe-Link zum Aufladen des Wallets zurück. |
sender_profile_list | Read | Listet deine hinterlegten Absenderprofile. |
sender_profile_get | Read | Liest ein einzelnes Absenderprofil im Detail. |
sender_profile_validate | Read | Prüft ein Absenderprofil auf Vollständigkeit und Format. |
signature_letterhead_list | Read | Listet deine gespeicherten Unterschriften und Briefköpfe. |
| Mandanten | ||
mandant_get | Read | Liest einen einzelnen Mandanten anhand seiner ID. |
mandant_list | Read | Listet deine Mandanten mit Seitenweise-Navigation. |
mandant_search | Read | Sucht Mandanten nach Name oder Merkmal. |
| Vorlagen | ||
template_list | Read | Listet deine Briefvorlagen. |
template_get | Read | Liest eine Vorlage samt Platzhaltern. |
template_apply | Read | Wendet eine Vorlage auf Daten an und gibt den Entwurfstext zurück. |
template_diff_check | Read | Vergleicht einen Brief gegen seine Vorlage und zeigt die Abweichungen. |
| Briefe | ||
letter_get | Read | Liest einen einzelnen Brief mit Status und Inhalt. |
letter_list | Read | Listet deine Briefe mit Filter- und Seitenoptionen. |
letter_search | Read | Durchsucht deine Briefe nach Volltext oder Empfänger. |
letter_create_draft | Action | Legt einen Briefentwurf an. Kostenlos, ohne Versand. |
order_status | Read | Liest den Versand- und Zustellstatus eines Auftrags. |
shipping_quote | Read | Berechnet den Preis für einen Brief nach Zielland und Versandart. |
| Adressen und Export | ||
address_tools | Read | Validiert und normalisiert eine Adresse nach deutschem Format. |
address_search_company | Read | Sucht eine Firmenadresse aus dem hinterlegten Verzeichnis. |
archive_export | Read | Exportiert dein GoBD-Archiv für Buchhaltung und DMS. |
| Senden und Aktionen | ||
order_send | Action | Verschickt einen Brief per Deutsche Post und bucht das Wallet ab. |
order_send_batch | Action | Verschickt mehrere Briefe in einem Sammelversand. |
order_cancel | Action | Storniert einen Auftrag, solange er noch nicht gedruckt ist. |
schedule | Action | Plant einen Versand für einen späteren Zeitpunkt. |
| Freigaben | ||
approval_list | Read | Listet offene Briefe in der Freigabe-Warteschlange. |
approval_submit | Action | Reicht einen Brief zur Freigabe ein. |
approval_decide | Action | Gibt einen Brief frei oder lehnt ihn ab. |
| Presets und Uploads | ||
preset_save | Action | Speichert eine Versand-Voreinstellung für wiederkehrende Briefe. |
signature_upload | Action | Lädt eine Unterschrift hoch und legt sie ab. |
letterhead_upload | Action | Lädt einen Briefkopf hoch und legt ihn ab. |
How much does a letter cost
A standard letter via FrankKi MCP starts at 3,39 EUR in black and white or 3,49 EUR in color. A registered letter (Einschreiben Einwurf) starts at 7,59 EUR, and a registered letter handed over against signature (Einschreiben Übergabe) starts at 8,19 EUR. You see the exact price from shipping_quote before any send.
| Product | From | Detail |
|---|---|---|
| Standard letter | from 3,39 € | Black and white |
| Standard letter | from 3,49 € | Color |
| Registered (Einwurf) | from 7,59 € | Delivery with proof of posting, no signature |
| Registered (Übergabe) | from 8,19 € | Handed over in person against signature |
Delivery within 1 to 3 working days inside Germany.
DACH native, worldwide via Pingen.
What is FrankKi MCP
FrankKi MCP is a remote hosted Model Context Protocol server that gives AI assistants and agents a direct interface to real postal mail. It exposes 27 tools so an assistant can draft a letter, get a binding price, send it via Deutsche Post and track delivery, all without a human leaving the chat. Launching July 2026.
We built FrankKi MCP so an agent can finish the job. It does not stop at the draft, it puts the letter in the post.
Every send goes through the same fulfillment and capture safety net as our app. The MCP layer is a clean interface on top of a proven pipeline.
Who is FrankKi MCP for
FrankKi MCP is built for law firms, tax advisors, agencies and developers who want their AI tools to send real letters without manual printing. Any team that drafts correspondence in an assistant can connect once at https://mcp.frankki.app and turn a draft into a posted Deutsche Post letter in the same workflow.
Law firms
Draft client and counterparty letters in your assistant and send them as registered mail with proof of posting or signature on delivery, with full tracking on every send.
Tax advisors
Generate filings, reminders and authority correspondence per client, then send them straight to the post with an approval step before anything leaves the office.
Agencies
Run mailings and per client outreach from one connection, send single letters or batches with order_send_batch, and keep every dispatch tracked and auditable.
Developers
Wire FrankKi MCP into agents and pipelines over plain streamable HTTP. Draft, quote, send and track letters with 27 tools and a single Bearer JWT.
How reliable is fulfillment
TODO-REAL-NUMBER
of letters sent via FrankKi MCP confirmed dispatched on the next working day
Method: share of order_send calls reaching Deutsche Post handover within one working day, measured across all production sends.
How secure is the connection
FrankKi MCP secures every connection with a Bearer JWT and runs each send through the same fulfillment and payment safety net as the FrankKi app. Read tools never change state, action tools are explicit, and an optional approval queue can require a human decision before any letter is sent.
Authenticated calls
Every request carries your Bearer JWT. OAuth 2.1 one-click connect is in preparation and will not break existing JWT clients.
Read and action are separate
Read tools return state and never send mail. Action tools such as order_send are explicit, so an agent cannot post a letter by accident.
Approval queue
Use approval_submit and approval_decide to require a human decision before a letter leaves the building, ideal for regulated teams.
Proven fulfillment
Sends run through the same Deutsche Post fulfillment and deferred payment capture pipeline that already powers the FrankKi app.
Frequently asked questions
How do I send a physical letter via MCP in Germany
Is FrankKi MCP live yet
Which AI assistants are supported
How much does a letter cost
How secure is the connection
Get early access to FrankKi MCP
FrankKi MCP launches July 2026. Join the waitlist to receive your Bearer JWT and connect your assistant to https://mcp.frankki.app on day one.
Join the early access waitlist
Be among the first to connect your AI assistant to real Deutsche Post mail when FrankKi MCP launches in July 2026.