FrankKi is a remote MCP server that gives an AI agent 4 tools, among them address_validate, mcp_health, pricing_tiers. It answers at https://mcp.frankki.app over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 10 of 10 times since 4 September 2026; the last check, on 17 October 2026, succeeded.
The agentic layer of letters. Agents send real printed mail worldwide, German compliance built in.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
address_validate | Prüft eine Adresse anhand landesspezifischer Regeln und meldet harte Fehler als ADDRESS_INVALID. Nur eine Prüfung, das Adressbuch bleibt unverändert; zum Anlegen oder Ändern einer Adresse nimm address_upsert. EN: Validates an address using Inputs: name, company, street, houseNumber, pobox, zip |
mcp_health | Health-/Echo-Probe - prüft das Partner-Token und die Verarbeitungskette von Anfang bis Ende und sagt dir unter setup, welche Voraussetzungen für einen echten Versand schon erfüllt sind (Absender-Profil, AVV, Guthaben, Sandbox, Freigabe) und Inputs: checkRender, reasoning |
pricing_tiers | Liefert die Staffelpreise (Mengenrabatte) von FrankKi: ab welcher Monatsmenge welcher Beispielpreis pro Brief gilt. Nutze das, wenn jemand nach Mengenrabatt, Volumenpreis, Staffelpreis oder Großkundenpreis fragt. Die Beispielpreise gelten f Inputs: reasoning |
shipping_quote | Ermittelt den Preis, das Briefformat, die Versandart und die voraussichtliche Laufzeit für einen geplanten Brief, bevor er versendet wird. Das ist die Schätzung für den Fall, dass der Brief erst geplant ist: du gibst nur Seitenzahl, Land un Inputs: pageCount, color, deliveryType, express, country, letterId |
Every block below points at https://mcp.frankki.app. Pick your client and copy.
claude mcp add --transport http frankki https://mcp.frankki.app
{
"mcpServers": {
"frankki": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://mcp.frankki.app"]
}
}
}{
"mcpServers": {
"frankki": {
"url": "https://mcp.frankki.app"
}
}
}{
"servers": {
"frankki": {
"type": "http",
"url": "https://mcp.frankki.app"
}
}
}{
"context_servers": {
"frankki": {
"url": "https://mcp.frankki.app"
}
}
}{
"mcpServers": {
"frankki": {
"serverUrl": "https://mcp.frankki.app"
}
}
}{
"mcpServers": {
"frankki": {
"url": "https://mcp.frankki.app"
}
}
}name: FrankKi
version: 0.0.1
schema: v1
mcpServers:
- name: FrankKi
type: streamable-http
url: https://mcp.frankki.app{
"mcpServers": {
"frankki": {
"httpUrl": "https://mcp.frankki.app"
}
}
}{
"mcpServers": {
"frankki": {
"type": "http",
"url": "https://mcp.frankki.app"
}
}
}{
"mcpServers": {
"frankki": {
"url": "https://mcp.frankki.app"
}
}
}goose://extension?url=https%3A%2F%2Fmcp.frankki.app&type=streamable_http&id=frankki&name=FrankKi
It answered our last check on 17 October 2026 in 210 ms. Over 10 checks since 4 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by frankki.app and served from mcp.frankki.app, the vendor's own domain: https://mcp.frankki.app.
4, as returned by the server's own tools/list on 9 September 2026: address_validate, mcp_health, pricing_tiers, shipping_quote.
It answered our last check on 17 October 2026 in 210 ms. Over 10 checks since 4 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://mcp.frankki.app. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: app.frankki. Endpoint host: mcp.frankki.app. ARD identifier: urn:air:app.frankki:mcp:letters.
First indexed 31 August 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.