diff --git a/.env b/.env
new file mode 100644
index 0000000..3b8d31b
--- /dev/null
+++ b/.env
@@ -0,0 +1 @@
+IPV64_API_KEY=dein_api_token_hier
diff --git a/README.md b/README.md
index 3430e18..0ba6008 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,55 @@
-# ipv64-tui
+# IPv64 DNS TUI Client
+
+[Deutsch](#deutsch) | [English](#english)
+
+---
+
+## Deutsch
+
+Ein moderner Terminal-Client (TUI) zur Verwaltung von DNS-Records auf [IPv64.net](https://ipv64.net), entwickelt mit **Python**, **Textual** und **HTTPX**.
+
+### Funktionen
+
+- **Übersichtliche Oberfläche:** Anzeige aller Domains und DNS-Einträge in interaktiven Tabellen.
+- **Vollständige DNS-Verwaltung:** Anlegen, Bearbeiten und Löschen von Records (A, AAAA, CNAME, TXT, MX, NS, SRV).
+- **Flexibles Auth-Handling:** API-Key aus Umgebungsvariablen (`export`), `.env`-Datei oder interaktiver Terminalabfrage.
+- **Tastaturgesteuert:** Schnelle Navigation und Aktionen über Hotkeys.
+
+### Voraussetzungen
+
+- Python 3.10+
+- Abhängigkeiten:
+  ```bash
+  pip install textual httpx python-dotenv
+```
+
+### Konfiguration
+Optional kann eine .env-Datei im Stammverzeichnis angelegt werden:
+
+```bash
+IPV64_API_KEY=dein_api_token_hier
+```
+Alternativ kann der Schlüssel vor dem Start exportiert werden
+
+```bash
+export IPV64_API_KEY="dein_api_token_hier"
+```
+Wird kein Key gefunden (oder steht noch der Standard-Platzhalter in der .env), fragt das Tool beim Start interaktiv nach dem Token.
+
+
+### Starten
+
+```bash
+python3 main.py
+```
+
+### Tastenkürzel
+
+|Taste|Aktion|
+|------|------|
+|r|Domains & Records neu von IPv64 laden|
+|e / Enter|Ausgewählten Record ins Formular laden (Bearbeiten)|
+|d|Ausgewählten Record sofort löschen|
+|Tab / Shift+Tab|"Zwischen Feldern, Tabelle und Buttons wechseln"|
+|q|Anwendung beenden|
 
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diff --git a/api_client.py b/api_client.py
new file mode 100755
index 0000000..540f62c
--- /dev/null
+++ b/api_client.py
@@ -0,0 +1,106 @@
+#!/usr/bin/env python3
+"""IPv64 DNS TUI Client
+Author:  Pascal Bouquet <pascal@ptbos.de>
+License: GNU General Public License v3.0 (GPL-3.0)
+Year:    2026
+"""
+
+import httpx
+
+BASE_URL = "https://ipv64.net/api.php"
+
+
+class IPv64Client:
+    def __init__(self, api_key: str):
+        self.headers = {"Authorization": f"Bearer {api_key.strip()}"}
+
+    async def get_account_info(self) -> dict:
+        """[GET] get_account_info: Ruft Kontoinformationen und Limits ab."""
+        async with httpx.AsyncClient() as client:
+            resp = await client.get(
+                f"{BASE_URL}?get_account_info",
+                headers=self.headers,
+                timeout=10.0,
+            )
+            resp.raise_for_status()
+            return resp.json()
+
+    async def get_domains(self) -> dict:
+        """[GET] get_domains: Liefert alle Domains und Records."""
+        async with httpx.AsyncClient() as client:
+            resp = await client.get(
+                f"{BASE_URL}?get_domains",
+                headers=self.headers,
+                timeout=10.0,
+            )
+            resp.raise_for_status()
+            return resp.json()
+
+    async def add_domain(self, domain_name: str) -> dict:
+        """[POST] add_domain: Legt eine neue Domain an."""
+        data = {"add_domain": domain_name}
+        async with httpx.AsyncClient() as client:
+            resp = await client.post(
+                BASE_URL,
+                headers=self.headers,
+                data=data,
+                timeout=10.0,
+            )
+            resp.raise_for_status()
+            return resp.json()
+
+    async def delete_domain(self, domain_name: str) -> dict:
+        """[DELETE] del_domain: Löscht Domain mit allen Einträgen."""
+        data = {"del_domain": domain_name}
+        async with httpx.AsyncClient() as client:
+            resp = await client.request(
+                "DELETE",
+                BASE_URL,
+                headers=self.headers,
+                data=data,
+                timeout=10.0,
+            )
+            resp.raise_for_status()
+            return resp.json()
+
+    async def add_record(
+        self,
+        domain: str,
+        subdomain: str,
+        typ: str,
+        content: str,
+        prio: str = "",
+    ) -> dict:
+        """[POST] add_record: DNS-Record anlegen."""
+        data = {
+            "add_record": domain,
+            "praefix": subdomain,
+            "type": typ.upper(),
+            "content": content,
+        }
+        if prio and prio.strip() and prio.strip().lower() != "none":
+            data["prio"] = prio.strip()
+
+        async with httpx.AsyncClient() as client:
+            resp = await client.post(
+                BASE_URL,
+                headers=self.headers,
+                data=data,
+                timeout=10.0,
+            )
+            resp.raise_for_status()
+            return resp.json()
+
+    async def delete_record_by_id(self, record_id: int | str) -> dict:
+        """[DELETE] del_record per ID."""
+        data = {"del_record": str(record_id)}
+        async with httpx.AsyncClient() as client:
+            resp = await client.request(
+                "DELETE",
+                BASE_URL,
+                headers=self.headers,
+                data=data,
+                timeout=10.0,
+            )
+            resp.raise_for_status()
+            return resp.json()
diff --git a/app.py b/app.py
new file mode 100755
index 0000000..83414cd
--- /dev/null
+++ b/app.py
@@ -0,0 +1,274 @@
+#!/usr/bin/env python3
+"""IPv64 DNS TUI Client
+Author:  Pascal Bouquet <pascal@ptbos.de>
+License: GNU General Public License v3.0 (GPL-3.0)
+Year:    2026
+"""
+
+from textual.app import App, ComposeResult
+from textual.containers import Horizontal, Vertical
+from textual.widgets import (
+    Button,
+    DataTable,
+    Footer,
+    Header,
+    Label,
+    Select,
+    Static,
+)
+
+from api_client import IPv64Client
+from widgets import RecordForm
+
+
+class IPv64TUI(App):
+    CSS = """
+    Screen {
+        layout: vertical;
+    }
+    #top-bar {
+        height: 3;
+        margin: 1 1 0 1;
+    }
+    #main-container {
+        height: 1fr;
+        margin: 0 1;
+    }
+    #left-pane {
+        width: 30%;
+        border: round $primary;
+        padding: 0 1;
+    }
+    #right-pane {
+        width: 70%;
+        border: round $primary;
+    }
+    #form-pane {
+        height: auto;
+        border: round $accent;
+        margin: 0 1 1 1;
+        padding: 1;
+    }
+    .form-row {
+        height: 3;
+        align-vertical: middle;
+        margin-bottom: 1;
+    }
+    .form-row Input, .form-row Select {
+        width: 1fr;
+    }
+    .form-label {
+        width: 12;
+    }
+    .hidden {
+        display: none;
+    }
+    #status {
+        height: 1;
+        margin: 0 1;
+        color: $text-muted;
+    }
+    """
+
+    BINDINGS = [
+        ("r", "refresh_data", "Aktualisieren"),
+        ("e", "edit_selected", "Bearbeiten"),
+        ("d", "delete_selected", "Löschen"),
+        ("q", "quit", "Beenden"),
+    ]
+
+    def __init__(self, api_key: str):
+        super().__init__()
+        self.client = IPv64Client(api_key)
+        self.domains_cache = {}
+        self.current_domain = None
+
+    def compose(self) -> ComposeResult:
+        yield Header(show_clock=True)
+        yield Static("IPv64.net DNS Manager", id="top-bar")
+
+        with Horizontal(id="main-container"):
+            with Vertical(id="left-pane"):
+                yield Label("Domain auswählen:")
+                yield Select([], id="domain-select", prompt="Wähle Domain...")
+                yield Button("Domains neu laden", id="btn-refresh", variant="primary")
+            with Vertical(id="right-pane"):
+                yield DataTable(id="records-table")
+
+        yield RecordForm()
+        yield Static("Bereit.", id="status")
+        yield Footer()
+
+    async def on_mount(self) -> None:
+        table = self.query_one("#records-table", DataTable)
+        table.cursor_type = "row"
+        table.add_columns("ID", "Typ", "Subdomain", "Inhalt", "Prio")
+        await self.load_domains()
+
+    async def load_domains(self) -> None:
+        self.set_status("Lade Domains von IPv64...")
+        try:
+            res = await self.client.get_domains()
+            domains_sub = res.get("subdomains", {})
+            self.domains_cache = domains_sub
+
+            options = [(dom, dom) for dom in domains_sub.keys()]
+            dom_select = self.query_one("#domain-select", Select)
+
+            # Verhindert, dass während des Updates unerwünschte Events feuern
+            with self.prevent(Select.Changed):
+                dom_select.set_options(options)
+
+                # Vorherige Auswahl beibehalten oder Fallback auf erste Domain
+                if self.current_domain and self.current_domain in self.domains_cache:
+                    dom_select.value = self.current_domain
+                elif options:
+                    self.current_domain = options[0][0]
+                    dom_select.value = self.current_domain
+                else:
+                    self.current_domain = None
+                    dom_select.value = Select.BLANK
+
+            if self.current_domain:
+                self.update_table(self.current_domain)
+            else:
+                self.query_one("#records-table", DataTable).clear()
+
+            self.set_status(f"{len(options)} Domains geladen.")
+        except Exception as e:
+            self.set_status(f"Fehler: {e}")
+
+    def update_table(self, domain_name: str) -> None:
+        table = self.query_one("#records-table", DataTable)
+        table.clear()
+        domain_data = self.domains_cache.get(domain_name, {})
+        records = domain_data.get("records", [])
+
+        for rec in records:
+            rec_id = str(rec.get("record_id", ""))
+            table.add_row(
+                rec_id,
+                str(rec.get("type", "-")),
+                str(rec.get("praefix", "@")),
+                str(rec.get("content", "-")),
+                str(rec.get("prio", "-")),
+                key=rec_id,
+            )
+
+    def on_select_changed(self, event: Select.Changed) -> None:
+        if event.select.id == "domain-select":
+            if event.value != Select.BLANK:
+                self.current_domain = str(event.value)
+                self.update_table(self.current_domain)
+                # Formular zurücksetzen beim Domain-Wechsel
+                self.query_one(RecordForm).reset_mode()
+
+    def on_data_table_row_selected(self, event: DataTable.RowSelected) -> None:
+        """Öffnet den Bearbeitungsmodus auch bei Doppel-/Enter-Klick auf eine Zeile."""
+        self.action_edit_selected()
+
+    async def on_button_pressed(self, event: Button.Pressed) -> None:
+        if event.button.id == "btn-refresh":
+            await self.load_domains()
+        elif event.button.id == "btn-submit":
+            await self.submit_record()
+        elif event.button.id == "btn-cancel":
+            self.query_one(RecordForm).reset_mode()
+            self.set_status("Bearbeitung abgebrochen.")
+
+    def action_edit_selected(self) -> None:
+        table = self.query_one("#records-table", DataTable)
+        if table.row_count == 0 or table.cursor_row is None:
+            self.set_status("Kein Eintrag zum Bearbeiten ausgewählt.")
+            return
+
+        row_data = table.get_row_at(table.cursor_row)
+        rec_id, typ, subdomain, content, prio = (
+            str(row_data[0]),
+            str(row_data[1]),
+            str(row_data[2]),
+            str(row_data[3]),
+            str(row_data[4]),
+        )
+
+        form = self.query_one(RecordForm)
+        form.set_edit_mode(rec_id, subdomain, typ, content, prio)
+        self.set_status(f"Bearbeite Record ID {rec_id}. Daten im Formular anpassen.")
+
+    async def submit_record(self) -> None:
+        if not self.current_domain:
+            self.set_status("Bitte zuerst eine Domain auswählen.")
+            return
+
+        form = self.query_one(RecordForm)
+        data = form.get_data()
+
+        if not data["content"]:
+            self.set_status("Content darf nicht leer sein.")
+            return
+
+        old_record_id = data["record_id"]
+
+        try:
+            # Wenn wir im Bearbeitungsmodus sind: Alten Eintrag zuerst löschen
+            if old_record_id:
+                self.set_status(f"Aktualisiere Record {old_record_id}...")
+                del_res = await self.client.delete_record_by_id(old_record_id)
+                if del_res.get("status") not in ("success", None) and del_res.get("info") != "success":
+                    self.set_status(f"Fehler beim Ersetzen des Records: {del_res}")
+                    return
+            else:
+                self.set_status("Erstelle neuen Record...")
+
+            res = await self.client.add_record(
+                self.current_domain,
+                data["subdomain"],
+                data["type"],
+                data["content"],
+                data["prio"],
+            )
+
+            if res.get("status") == "success" or res.get("info") == "success":
+                msg = "Record aktualisiert." if old_record_id else "Record angelegt."
+                self.set_status(msg)
+                form.reset_mode()
+                await self.load_domains()
+            else:
+                self.set_status(f"API-Rückmeldung: {res}")
+        except Exception as e:
+            self.set_status(f"Fehler: {e}")
+
+    async def action_delete_selected(self) -> None:
+        table = self.query_one("#records-table", DataTable)
+        if table.row_count == 0 or table.cursor_row is None:
+            self.set_status("Keine Einträge vorhanden.")
+            return
+
+        current_row_idx = table.cursor_row
+        row_data = table.get_row_at(current_row_idx)
+        record_id = str(row_data[0])
+
+        if not record_id or record_id == "-":
+            self.set_status("Keine gültige Record-ID gefunden.")
+            return
+
+        self.set_status(f"Lösche Record ID {record_id}...")
+        try:
+            res = await self.client.delete_record_by_id(record_id)
+            if res.get("status") == "success" or res.get("info") == "success":
+                self.set_status(f"Record {record_id} gelöscht.")
+                # Falls wir diesen Record gerade im Formular bearbeitet hatten: Formular leeren
+                form = self.query_one(RecordForm)
+                if form.edit_record_id == record_id:
+                    form.reset_mode()
+                await self.load_domains()
+            else:
+                self.set_status(f"API-Rückmeldung: {res}")
+        except Exception as e:
+            self.set_status(f"Fehler beim Löschen: {e}")
+
+    def action_refresh_data(self) -> None:
+        self.run_worker(self.load_domains())
+
+    def set_status(self, text: str) -> None:
+        self.query_one("#status", Static).update(text)
diff --git a/config.py b/config.py
new file mode 100755
index 0000000..e48b1e0
--- /dev/null
+++ b/config.py
@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+"""IPv64 DNS TUI Client
+Author:  Pascal Bouquet <pascal@ptbos.de>
+License: GNU General Public License v3.0 (GPL-3.0)
+Year:    2026
+"""
+
+import os
+import sys
+from dotenv import load_dotenv
+
+load_dotenv()
+
+ENV_KEY_NAME = "IPV64_API_KEY"
+
+# Standard-Platzhalter, die als "nicht konfiguriert" gewertet werden
+PLACEHOLDERS = {
+    "",
+    "dein_api_token_hier",
+    "dein_api_key",
+    "dein_geheimer_api_schluessel",
+    "your_api_key_here",
+}
+
+
+def get_api_key() -> str:
+    token = os.getenv(ENV_KEY_NAME, "").strip()
+
+    # Falls der Token leer ist oder noch ein Platzhalter drinsteht
+    if token.lower() in PLACEHOLDERS:
+        print("Kein gültiger API-Token gefunden (Platzhalter oder leer).")
+        try:
+            token = input("Bitte IPv64 API-Token eingeben: ").strip()
+        except (KeyboardInterrupt, EOFError):
+            print("\nAbgebrochen.")
+            sys.exit(0)
+
+        if not token or token.lower() in PLACEHOLDERS:
+            print("Fehler: Ein gültiger Token ist erforderlich, um fortzufahren.")
+            sys.exit(1)
+
+    return token
diff --git a/main.py b/main.py
new file mode 100755
index 0000000..daf5dae
--- /dev/null
+++ b/main.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+"""IPv64 DNS TUI Client
+Author:  Pascal Bouquet <pascal@ptbos.de>
+License: GNU General Public License v3.0 (GPL-3.0)
+Year:    2026
+"""
+
+from app import IPv64TUI
+from config import get_api_key
+
+
+def main():
+    api_key = get_api_key()
+    app = IPv64TUI(api_key=api_key)
+    app.run()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/widgets.py b/widgets.py
new file mode 100755
index 0000000..9b2a101
--- /dev/null
+++ b/widgets.py
@@ -0,0 +1,107 @@
+#!/usr/bin/env python3
+"""IPv64 DNS TUI Client
+Author:  Pascal Bouquet <pascal@ptbos.de>
+License: GNU General Public License v3.0 (GPL-3.0)
+Year:    2026
+"""
+
+from rich.markup import escape
+from textual.app import ComposeResult
+from textual.containers import Horizontal, Vertical
+from textual.widgets import Button, Input, Label, Select, Static
+
+
+class RecordForm(Static):
+    """Eingabe- und Bearbeitungsformular für DNS-Records."""
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        self.edit_record_id: str | None = None
+
+    def compose(self) -> ComposeResult:
+        with Vertical(id="form-pane"):
+            yield Label("Record hinzufügen:", id="form-title")
+            with Horizontal(classes="form-row"):
+                yield Label("Subdomain:", classes="form-label")
+                yield Input(placeholder="z. B. www oder mx01", id="in-subdomain")
+                yield Label("Typ:", classes="form-label")
+                yield Select(
+                    [
+                        ("A", "A"),
+                        ("AAAA", "AAAA"),
+                        ("CNAME", "CNAME"),
+                        ("TXT", "TXT"),
+                        ("MX", "MX"),
+                        ("NS", "NS"),
+                        ("SRV", "SRV"),
+                    ],
+                    value="A",
+                    id="sel-type",
+                )
+            with Horizontal(classes="form-row"):
+                yield Label("Content/IP:", classes="form-label")
+                yield Input(placeholder="192.0.2.1 oder Ziel", id="in-content")
+                yield Label("Prio:", classes="form-label")
+                yield Input(placeholder="10 (nur MX/SRV)", id="in-prio")
+                yield Button("Erstellen", id="btn-submit", variant="success")
+                yield Button(
+                    "Abbrechen",
+                    id="btn-cancel",
+                    variant="default",
+                    classes="hidden",
+                )
+
+    def set_edit_mode(
+        self, record_id: str, subdomain: str, typ: str, content: str, prio: str
+    ) -> None:
+        """Schaltet das Formular in den Bearbeitungsmodus."""
+        self.edit_record_id = record_id
+        
+        # Runde Klammern und escape() verhindern den Rich-Markup-Error
+        clean_id = escape(str(record_id))
+        self.query_one("#form-title", Label).update(
+            f"Record bearbeiten (ID: {clean_id}):"
+        )
+        
+        # Subdomain bereinigen: @ oder leer wird zu leerem Input
+        self.query_one("#in-subdomain", Input).value = "" if subdomain in ("@", "") else subdomain
+        
+        # Select-Wert für Typ setzen, falls in Optionen vorhanden
+        sel_type = self.query_one("#sel-type", Select)
+        if typ in [opt[1] for opt in sel_type._options]:
+            sel_type.value = typ
+
+        self.query_one("#in-content", Input).value = "" if content == "-" else content
+        self.query_one("#in-prio", Input).value = "" if prio in ("-", "None") else prio
+
+        btn_submit = self.query_one("#btn-submit", Button)
+        btn_submit.label = "Speichern"
+        btn_submit.variant = "warning"
+
+        self.query_one("#btn-cancel", Button).remove_class("hidden")
+
+    def reset_mode(self) -> None:
+        """Setzt das Formular wieder auf 'Neuer Record' zurück."""
+        self.edit_record_id = None
+        self.query_one("#form-title", Label).update("Record hinzufügen:")
+        self.clear()
+
+        btn_submit = self.query_one("#btn-submit", Button)
+        btn_submit.label = "Erstellen"
+        btn_submit.variant = "success"
+
+        self.query_one("#btn-cancel", Button).add_class("hidden")
+
+    def get_data(self) -> dict:
+        return {
+            "record_id": self.edit_record_id,
+            "subdomain": self.query_one("#in-subdomain", Input).value.strip(),
+            "type": str(self.query_one("#sel-type", Select).value),
+            "content": self.query_one("#in-content", Input).value.strip(),
+            "prio": self.query_one("#in-prio", Input).value.strip(),
+        }
+
+    def clear(self) -> None:
+        self.query_one("#in-subdomain", Input).value = ""
+        self.query_one("#in-content", Input).value = ""
+        self.query_one("#in-prio", Input).value = ""