diff --git a/backend/app/services/catalog_service.py b/backend/app/services/catalog_service.py
index 27d46d6..f22ecdf 100644
--- a/backend/app/services/catalog_service.py
+++ b/backend/app/services/catalog_service.py
@@ -227,7 +227,7 @@ class CatalogService:
                 )
             )
         }
-        return keys <= {"17023", "price"}
+        return len(keys) < 40
 
     def list_templates(self) -> list[dict[str, Any]]:
         rows, _total = self.catalog.list_profiles(200, 0)
diff --git a/backend/app/sources/geizhals/adapter.py b/backend/app/sources/geizhals/adapter.py
index 682b9a9..da94030 100644
--- a/backend/app/sources/geizhals/adapter.py
+++ b/backend/app/sources/geizhals/adapter.py
@@ -11,6 +11,7 @@ from app.settings import get_settings
 from app.sources.geizhals.category_url import parse_category_key, with_extended_filters
 from app.sources.geizhals.live_page import load_category_page, load_result_page
 from app.sources.geizhals.result_parser import parse_result_html, with_page
+from app.sources.geizhals.taxonomy_api import fetch_taxonomy_api
 from app.sources.geizhals.taxonomy_parser import parse_taxonomy_html
 
 FIXTURE_DIR = Path(__file__).resolve().parents[3] / "fixtures" / "geizhals"
@@ -29,6 +30,9 @@ class GeizhalsAdapter:
             return self._load(f"{category_ref}-taxonomy.json")
         url = with_extended_filters(source_url or f"https://geizhals.de/?cat={category_ref}")
         category_ref = parse_category_key(url)
+        api_payload = fetch_taxonomy_api(source_url or url, category_ref=category_ref)
+        if api_payload and api_payload.get("filters"):
+            return api_payload
         html, mode, status = load_category_page(
             url,
             category_ref=category_ref,
diff --git a/backend/app/sources/geizhals/taxonomy_api.py b/backend/app/sources/geizhals/taxonomy_api.py
new file mode 100644
index 0000000..10be798
--- /dev/null
+++ b/backend/app/sources/geizhals/taxonomy_api.py
@@ -0,0 +1,146 @@
+from __future__ import annotations
+
+from typing import Any
+from urllib.parse import parse_qs, urlsplit
+
+import httpx
+
+from app.discovery.enums import FilterType
+from app.sources.geizhals.live_page import BROWSER_HEADERS
+from app.sources.geizhals.taxonomy_parser import _group_sort, _option_from_link
+
+TYPE_MAP = {
+    "enum": FilterType.ENUM.value,
+    "substring": FilterType.ENUM.value,
+    "range_from": FilterType.NUMERIC_THRESHOLD.value,
+    "range_to": FilterType.NUMERIC_THRESHOLD.value,
+}
+GROUP_RULES = (
+    ("Anschlüsse", ("anschluss", "usb", "thunderbolt", "docking")),
+    ("Display", ("display", "pixeldichte", "screen-to-body", "bildwiederhol", "farbraum", "farbräume")),
+    ("CPU", ("cpu", "ai-rechen")),
+    ("RAM erweitert", ("ram",)),
+    ("Speicher", ("speicher", "ssd", "hdd", "flash", "m.2", "cardreader", "laufwerk")),
+    ("Grafik", ("grafik", "gpu", "igpu", "directx")),
+    ("Wireless", ("wlan", "wifi", "bluetooth", "wireless")),
+    ("Mobilfunk", ("mobilfunk", "navigation")),
+    ("Akku", ("akku", "netzteil")),
+    ("Abmessungen", ("breite", "tiefe", "höhe", "volumen", "gewicht", "verhältnis")),
+    ("Eingabe", ("eingabe", "tastatur", "touchpad", "webcam", "kamera")),
+    ("Betriebssystem", ("betriebssystem", "sprachversion", "chrome auto")),
+)
+
+
+def categorylist_api_url(source_url: str) -> str:
+    parts = urlsplit(source_url)
+    query = parse_qs(parts.query)
+    category = (query.get("cat") or [""])[0] or "nb"
+    hloc = (query.get("hloc") or ["de"])[0]
+    return (
+        "https://geizhals.de/api/gh0/categorylist/"
+        f"?cat={category}&xf=&sort=t&hloc={hloc}&v=e&filters_only=1"
+    )
+
+
+def fetch_taxonomy_api(source_url: str, *, category_ref: str) -> dict[str, Any] | None:
+    url = categorylist_api_url(source_url)
+    try:
+        response = httpx.get(
+            url,
+            headers={**BROWSER_HEADERS, "Accept": "application/json"},
+            follow_redirects=True,
+            timeout=25.0,
+        )
+        if response.status_code >= 400:
+            return None
+        return parse_taxonomy_api(
+            response.json(),
+            category_ref=category_ref,
+            source_url=source_url,
+        )
+    except Exception:
+        return None
+
+
+def parse_taxonomy_api(payload: dict[str, Any], *, category_ref: str, source_url: str) -> dict[str, Any]:
+    raw_filters = ((payload.get("response") or {}).get("filters") or [])
+    filters = [_filter_from_api(item) for item in raw_filters if isinstance(item, dict)]
+    filters = [item for item in filters if item["options"] or item.get("range")]
+    if not any(item["external_filter_key"] == "price" for item in filters):
+        filters.append(_price_filter())
+    filters.sort(key=lambda item: (item["group_sort"], item["group_label"].lower(), item["label"].lower()))
+    return {
+        "source": "geizhals",
+        "external_category_key": category_ref,
+        "name": "Notebooks" if category_ref == "nb" else category_ref,
+        "canonical_category": "notebook" if category_ref == "nb" else None,
+        "source_url": source_url,
+        "filters": filters,
+        "blocked": False,
+        "discovery_mode": "live_api",
+        "taxonomy_status": "READY",
+    }
+
+
+def _filter_from_api(raw: dict[str, Any]) -> dict[str, Any]:
+    key = str(raw.get("id") or "")
+    label = str(raw.get("title") or key)
+    source_type = str(raw.get("type") or "enum")
+    filter_type = TYPE_MAP.get(source_type, FilterType.ENUM.value)
+    options: list[dict[str, Any]] = []
+    encoding_options: dict[str, str] = {}
+    for value in raw.get("values") or []:
+        query = str(value.get("id") or "")
+        if "_" in query:
+            query = query.split("_", 1)[1].replace("+", " ")
+        option = _option_from_link(str(value.get("name") or query), query)
+        if source_type == "range_from":
+            option["operator"] = ">="
+        elif source_type == "range_to":
+            option["operator"] = "<="
+        options.append(option)
+        encoding_options[option["source_value"]] = query
+        if option.get("normalized_value") is not None:
+            encoding_options[str(option["normalized_value"])] = query
+    group_label = _group_label(label)
+    return {
+        "external_filter_key": key,
+        "label": label,
+        "filter_type": filter_type,
+        "canonical_unit": next((item.get("unit") for item in options if item.get("unit")), None),
+        "group_label": group_label,
+        "group_sort": _group_sort(group_label),
+        "options": options,
+        "encoding": {
+            "url_param": "xf",
+            "encoding_type": "OPTION_TOKEN",
+            "options": encoding_options,
+        },
+    }
+
+
+def _price_filter() -> dict[str, Any]:
+    return {
+        "external_filter_key": "price",
+        "label": "Preis",
+        "filter_type": FilterType.NUMERIC_RANGE.value,
+        "canonical_unit": "EUR",
+        "group_label": "Allgemein",
+        "group_sort": _group_sort("Allgemein"),
+        "options": [],
+        "range": {"minimum": 0, "maximum": None, "step": 1, "unit": "EUR"},
+        "encoding": {
+            "url_param": "bpmin",
+            "min_parameter": "bpmin",
+            "max_parameter": "bpmax",
+            "encoding_type": "RANGE_PARAMETERS",
+        },
+    }
+
+
+def _group_label(title: str) -> str:
+    text = title.casefold()
+    for group, needles in GROUP_RULES:
+        if any(needle in text for needle in needles):
+            return group
+    return "Allgemein"
diff --git a/backend/app/sources/geizhals/taxonomy_parser.py b/backend/app/sources/geizhals/taxonomy_parser.py
index 71df612..2428278 100644
--- a/backend/app/sources/geizhals/taxonomy_parser.py
+++ b/backend/app/sources/geizhals/taxonomy_parser.py
@@ -32,9 +32,13 @@ GROUP_ORDER = (
     "CPU",
     "RAM",
     "RAM erweitert",
+    "Speicher",
     "Grafik",
     "Anschlüsse",
     "Wireless",
+    "Mobilfunk",
+    "Eingabe",
+    "Betriebssystem",
     "Akku",
     "Abmessungen",
     "Sonstiges",
diff --git a/backend/tests/unit/test_geizhals_taxonomy_api.py b/backend/tests/unit/test_geizhals_taxonomy_api.py
new file mode 100644
index 0000000..364c42e
--- /dev/null
+++ b/backend/tests/unit/test_geizhals_taxonomy_api.py
@@ -0,0 +1,47 @@
+from app.sources.geizhals.taxonomy_api import categorylist_api_url, parse_taxonomy_api
+
+
+def test_categorylist_api_url_keeps_category_and_market() -> None:
+    url = categorylist_api_url("https://geizhals.de/?cat=gra16_512&hloc=at")
+    assert "cat=gra16_512" in url
+    assert "hloc=at" in url
+    assert "filters_only=1" in url
+
+
+def test_api_payload_keeps_enum_list_and_groups() -> None:
+    payload = parse_taxonomy_api(
+        {
+            "response": {
+                "filters": [
+                    {
+                        "id": "525",
+                        "title": "Hersteller",
+                        "type": "enum",
+                        "values": [
+                            {"id": "525_Apple", "name": "Apple"},
+                            {"id": "525_Lenovo", "name": "Lenovo"},
+                        ],
+                    },
+                    {
+                        "id": "2379",
+                        "title": "Display-Größe ab",
+                        "type": "range_from",
+                        "values": [{"id": "2379_13", "name": "ab 13\""}],
+                    },
+                ]
+            }
+        },
+        category_ref="nb",
+        source_url="https://geizhals.de/?cat=nb",
+    )
+    keys = {item["external_filter_key"] for item in payload["filters"]}
+    assert {"525", "2379", "price"} <= keys
+    hersteller = next(item for item in payload["filters"] if item["external_filter_key"] == "525")
+    assert hersteller["filter_type"] == "ENUM"
+    assert hersteller["group_label"] == "Allgemein"
+    assert {option["source_value"] for option in hersteller["options"]} == {"Apple", "Lenovo"}
+    assert hersteller["encoding"]["options"]["Apple"] == "Apple"
+    display = next(item for item in payload["filters"] if item["external_filter_key"] == "2379")
+    assert display["group_label"] == "Display"
+    assert display["filter_type"] == "NUMERIC_THRESHOLD"
+    assert display["options"][0]["operator"] == ">="