diff --git a/modules/fx-rates/src/Api/Router.php b/modules/fx-rates/src/Api/Router.php
index 350e907..7a09472 100644
--- a/modules/fx-rates/src/Api/Router.php
+++ b/modules/fx-rates/src/Api/Router.php
@@ -22,6 +22,10 @@ final class Router
                 $this->respond(['ok' => true, 'module' => 'fx-rates']);
             }
 
+            if ($path === 'v1/endpoints' && $method === 'GET') {
+                $this->respond(['data' => $this->endpointCatalog()]);
+            }
+
             if ($path === 'v1/status' && $method === 'GET') {
                 $this->respond(['data' => $this->service->latestStatuses()]);
             }
@@ -171,4 +175,96 @@ final class Router
     {
         return is_numeric($value) ? (int) $value : null;
     }
+
+    private function endpointCatalog(): array
+    {
+        return [
+            'module' => 'fx-rates',
+            'version' => 'v1',
+            'languages' => ['de', 'en'],
+            'endpoints' => [
+                [
+                    'path' => '/api/fx-rates/v1/endpoints',
+                    'method' => 'GET',
+                    'description_de' => 'Gibt alle verfuegbaren FX-API-Endpunkte mit deutscher und englischer Erklaerung zurueck.',
+                    'description_en' => 'Returns all available FX API endpoints with German and English explanations.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/latest',
+                    'method' => 'GET',
+                    'params' => ['base', 'symbols'],
+                    'description_de' => 'Liefert den neuesten gespeicherten Snapshot, optional auf eine Zielbasis umgerechnet und auf ausgewaehlte Waehrungen gefiltert.',
+                    'description_en' => 'Returns the latest stored snapshot, optionally rebased to a target currency and filtered to selected symbols.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/fetch',
+                    'method' => 'GET',
+                    'params' => ['fetch_id', 'base', 'symbols'],
+                    'description_de' => 'Liefert einen gespeicherten Snapshot anhand der fetch_id, optional umgerechnet auf eine Zielbasis und gefiltert auf einzelne Waehrungen.',
+                    'description_en' => 'Returns a stored snapshot by fetch_id, optionally rebased to a target currency and filtered to selected symbols.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/nearest',
+                    'method' => 'GET',
+                    'params' => ['at', 'base', 'symbols', 'window_minutes'],
+                    'description_de' => 'Liefert den zeitlich naechsten gespeicherten Snapshot zu einem Datum/Uhrzeit-Wert.',
+                    'description_en' => 'Returns the stored snapshot nearest to a given date/time value.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/snapshot',
+                    'method' => 'GET',
+                    'params' => ['at', 'base', 'symbols', 'window_minutes'],
+                    'description_de' => 'Liefert einen Snapshot zur Zielbasis und sucht fuer einen Zeitpunkt den naechsten passenden gespeicherten Kurs.',
+                    'description_en' => 'Returns a snapshot for the requested base and finds the nearest matching stored rate for a given timestamp.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/rate',
+                    'method' => 'GET',
+                    'params' => ['from', 'to', 'at', 'window_minutes'],
+                    'description_de' => 'Liefert einen Einzelkurs zwischen zwei Waehrungen, direkt oder als Kreuzkurs aus gespeicherten Snapshots.',
+                    'description_en' => 'Returns a single rate between two currencies, directly or as a cross-rate from stored snapshots.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/history',
+                    'method' => 'GET',
+                    'params' => ['from', 'to', 'from_at', 'to_at', 'limit'],
+                    'description_de' => 'Liefert den gespeicherten Kursverlauf zwischen zwei Waehrungen fuer einen Zeitraum.',
+                    'description_en' => 'Returns the stored rate history between two currencies for a given time range.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/refresh',
+                    'method' => 'POST',
+                    'body' => ['base', 'force', 'max_age_minutes'],
+                    'description_de' => 'Aktualisiert Kurse nur dann neu, wenn der letzte Abruf aelter als die erlaubte Zeitspanne ist. Die Antwort enthaelt immer die fetch_id des verwendeten Snapshots.',
+                    'description_en' => 'Refreshes rates only if the last fetch is older than the allowed age. The response always includes the fetch_id of the snapshot used.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/status',
+                    'method' => 'GET',
+                    'description_de' => 'Liefert den neuesten gespeicherten Abruf je Basiswaehrung.',
+                    'description_en' => 'Returns the most recent stored fetch per base currency.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/recent-fetches',
+                    'method' => 'GET',
+                    'params' => ['limit'],
+                    'description_de' => 'Liefert die zuletzt gespeicherten Abrufe mit fetch_id und Zeitstempel.',
+                    'description_en' => 'Returns the most recently stored fetches including fetch_id and timestamp.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/probe',
+                    'method' => 'GET',
+                    'params' => ['base'],
+                    'description_de' => 'Prueft, ob der konfigurierte Provider aktuelle Kurse liefern kann.',
+                    'description_en' => 'Checks whether the configured provider can return current rates.',
+                ],
+                [
+                    'path' => '/api/fx-rates/v1/settings',
+                    'method' => 'GET',
+                    'description_de' => 'Liefert die aktuellen Modul-Settings.',
+                    'description_en' => 'Returns the current module settings.',
+                ],
+            ],
+        ];
+    }
 }
diff --git a/modules/fx-rates/src/Domain/FxRatesService.php b/modules/fx-rates/src/Domain/FxRatesService.php
index 00e2e2e..22cbd26 100644
--- a/modules/fx-rates/src/Domain/FxRatesService.php
+++ b/modules/fx-rates/src/Domain/FxRatesService.php
@@ -218,6 +218,7 @@ final class FxRatesService
             'rate_date' => $rateDate,
             'updated_count' => count($saved['rates'] ?? []),
             'rates' => $saved['rates'] ?? [],
+            'fetch_id' => isset($saved['fetch']['id']) ? (int) $saved['fetch']['id'] : null,
             'fetch' => $this->localizeFetch(is_array($saved['fetch'] ?? null) ? $saved['fetch'] : null),
         ];
     }
@@ -235,6 +236,7 @@ final class FxRatesService
                 'rate_date' => $latest['rate_date'] ?? null,
                 'updated_count' => 0,
                 'rates' => [],
+                'fetch_id' => isset($latest['id']) ? (int) $latest['id'] : null,
                 'fetch' => $this->localizeFetch($latest),
                 'reused' => true,
             ];