diff --git a/README.md b/README.md
index 881fe2e..0a186c9 100644
--- a/README.md
+++ b/README.md
@@ -147,6 +147,50 @@ Need machine-readable status updates? The dashboard calls a small set of helper
 
 More automation hooks are planned; contributions are very welcome if you need additional routes.
 
+## Audiobookshelf integration
+Abogen can push finished audiobooks directly into Audiobookshelf. Configure this under **Settings → Integrations → Audiobookshelf** by providing:
+
+- **Base URL** – the HTTPS origin (and optional path prefix) where your Audiobookshelf server is reachable, for example `https://abs.example.com` or `https://media.example.com/abs`. Do **not** append `/api`.
+- **Library ID** – the identifier of the target Audiobookshelf library (copy it from the library’s settings page in ABS).
+- **API token** – a personal access token generated in Audiobookshelf under *Account → API tokens*.
+
+You can enable automatic uploads for future jobs or trigger individual uploads from the queue once the connection succeeds.
+
+### Reverse proxy checklist (Nginx Proxy Manager)
+When Audiobookshelf sits behind Nginx Proxy Manager (NPM), make sure the API paths and headers reach the backend untouched:
+
+1. Create a **Proxy Host** that points to your ABS container or host (default forward port `13378`).
+2. Under the **SSL** tab, enable your certificate and tick **Force SSL** if you want HTTPS only.
+3. In the **Advanced** tab, append the snippet below so bearer tokens, client IPs, and large uploads survive the proxy hop:
+   ```nginx
+  proxy_set_header Host $host;
+  proxy_set_header X-Real-IP $remote_addr;
+  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+  proxy_set_header X-Forwarded-Proto $scheme;
+  proxy_set_header X-Forwarded-Host $host;
+  proxy_set_header X-Forwarded-Port $server_port;
+  proxy_set_header Authorization $http_authorization;
+  client_max_body_size 5g;
+  proxy_read_timeout 300s;
+  proxy_connect_timeout 300s;
+   ```
+4. Disable **Block Common Exploits** (it strips Authorization headers in some NPM builds).
+5. Enable **Websockets Support** on the main proxy screen (Audiobookshelf uses it for the web UI, and it keeps the reverse proxy configuration consistent).
+6. If you publish Audiobookshelf under a path prefix (for example `/abs`), add a **Custom Location** with `Location: /abs/` and set the **Forward Path** to `/`. That rewrite strips the `/abs` prefix before traffic reaches Audiobookshelf so `/abs/api/...` on the internet becomes `/api/...` on the backend. Use the same prefixed URL in Abogen’s “Base URL” field.
+
+After saving the proxy host, test the API from the machine running Abogen:
+
+```bash
+curl -i "https://abs.example.com/api/uploads" \
+  -H "Authorization: Bearer YOUR_API_TOKEN" \
+  -H "Content-Type: application/json" \
+  -d '{"libraryId":"YOUR_LIBRARY_ID","mediaType":"audiobook"}'
+```
+
+If you still receive `Cannot GET /api/...`, the proxy is rewriting paths. Double-check the **Custom Locations** table (the `Forward Path` column should be empty for `/abs/`) and review the NPM access/error logs while issuing the curl request to confirm the backend sees the full `/api/uploads` URL.
+
+A JSON response containing an `id` or `uploadId` confirms the proxy is routing API calls correctly. You can then use **Test connection** in Abogen’s settings and the “Send to Audiobookshelf” button on completed jobs.
+
 ## Configuration reference
 Most behaviour is controlled through the UI, but a few environment variables are helpful for automation:
 - `ABOGEN_SECRET_KEY` – provide your own random secret when deploying across multiple replicas.
diff --git a/abogen/integrations/audiobookshelf.py b/abogen/integrations/audiobookshelf.py
index 2dd8209..03c8002 100644
--- a/abogen/integrations/audiobookshelf.py
+++ b/abogen/integrations/audiobookshelf.py
@@ -22,6 +22,7 @@ class AudiobookshelfConfig:
     api_token: str
     library_id: str
     collection_id: Optional[str] = None
+    folder_id: Optional[str] = None
     verify_ssl: bool = True
     send_cover: bool = True
     send_chapters: bool = True
diff --git a/abogen/web/routes.py b/abogen/web/routes.py
index 8512eab..45fad94 100644
--- a/abogen/web/routes.py
+++ b/abogen/web/routes.py
@@ -2129,6 +2129,7 @@ def _integration_defaults() -> Dict[str, Dict[str, Any]]:
             "api_token": "",
             "library_id": "",
             "collection_id": "",
+            "folder_id": "",
             "verify_ssl": True,
             "send_cover": True,
             "send_chapters": True,
@@ -2433,6 +2434,12 @@ def _audiobookshelf_settings_from_payload(payload: Mapping[str, Any]) -> Dict[st
         or stored.get("collection_id")
         or ""
     ).strip()
+    folder_id = str(
+        payload.get("folder_id")
+        or payload.get("audiobookshelf_folder_id")
+        or stored.get("folder_id")
+        or ""
+    ).strip()
     token_input = str(
         payload.get("api_token")
         or payload.get("audiobookshelf_api_token")
@@ -2502,6 +2509,7 @@ def _audiobookshelf_settings_from_payload(payload: Mapping[str, Any]) -> Dict[st
         "base_url": base_url,
         "library_id": library_id,
         "collection_id": collection_id,
+    "folder_id": folder_id,
         "api_token": api_token,
         "verify_ssl": verify_ssl,
         "send_cover": send_cover,
@@ -2527,6 +2535,7 @@ def _build_audiobookshelf_config(settings: Mapping[str, Any]) -> Optional[Audiob
         api_token=api_token,
         library_id=library_id,
         collection_id=(str(settings.get("collection_id") or "").strip() or None),
+    folder_id=(str(settings.get("folder_id") or "").strip() or None),
         verify_ssl=_coerce_bool(settings.get("verify_ssl"), True),
         send_cover=_coerce_bool(settings.get("send_cover"), True),
         send_chapters=_coerce_bool(settings.get("send_chapters"), True),
@@ -2608,6 +2617,7 @@ def _apply_integration_form(cfg: Dict[str, Any], form: Mapping[str, Any]) -> Non
     abs_base = str(form.get("audiobookshelf_base_url") or current_abs.get("base_url") or "").strip()
     abs_library = str(form.get("audiobookshelf_library_id") or current_abs.get("library_id") or "").strip()
     abs_collection = str(form.get("audiobookshelf_collection_id") or current_abs.get("collection_id") or "").strip()
+    abs_folder = str(form.get("audiobookshelf_folder_id") or current_abs.get("folder_id") or "").strip()
     abs_token_input = str(form.get("audiobookshelf_api_token") or "")
     abs_token_clear = _coerce_bool(form.get("audiobookshelf_api_token_clear"), False)
     if abs_token_input:
@@ -2632,6 +2642,7 @@ def _apply_integration_form(cfg: Dict[str, Any], form: Mapping[str, Any]) -> Non
         "api_token": abs_token,
         "library_id": abs_library,
         "collection_id": abs_collection,
+        "folder_id": abs_folder,
         "verify_ssl": abs_verify,
         "send_cover": abs_send_cover,
         "send_chapters": abs_send_chapters,
@@ -3095,6 +3106,7 @@ def test_audiobookshelf() -> ResponseReturnValue:
         "message": f"Connected to Audiobookshelf library '{library_name}'.",
         "library_id": library_id,
         "collection_id": collection_id or None,
+        "folder_id": settings.get("folder_id") or None,
     })
 
 
diff --git a/abogen/web/service.py b/abogen/web/service.py
index 294f891..4e1fce6 100644
--- a/abogen/web/service.py
+++ b/abogen/web/service.py
@@ -956,6 +956,7 @@ class ConversionService:
             api_token=api_token,
             library_id=library_id,
             collection_id=(str(integration_cfg.get("collection_id") or "").strip() or None),
+            folder_id=(str(integration_cfg.get("folder_id") or "").strip() or None),
             verify_ssl=self._coerce_bool(integration_cfg.get("verify_ssl"), True),
             send_cover=self._coerce_bool(integration_cfg.get("send_cover"), True),
             send_chapters=self._coerce_bool(integration_cfg.get("send_chapters"), True),
diff --git a/abogen/web/static/settings.js b/abogen/web/static/settings.js
index c65f4e3..195ab05 100644
--- a/abogen/web/static/settings.js
+++ b/abogen/web/static/settings.js
@@ -305,6 +305,7 @@ function collectAudiobookshelfFields() {
   const baseUrl = form.querySelector('#audiobookshelf_base_url')?.value?.trim() || '';
   const libraryId = form.querySelector('#audiobookshelf_library_id')?.value?.trim() || '';
   const collectionId = form.querySelector('#audiobookshelf_collection_id')?.value?.trim() || '';
+  const folderId = form.querySelector('#audiobookshelf_folder_id')?.value?.trim() || '';
   const tokenInput = form.querySelector('#audiobookshelf_api_token');
   const apiToken = tokenInput?.value?.trim() || '';
   const hasSecret = tokenInput?.dataset.hasSecret === 'true';
@@ -319,6 +320,7 @@ function collectAudiobookshelfFields() {
     base_url: baseUrl,
     library_id: libraryId,
     collection_id: collectionId,
+  folder_id: folderId,
     api_token: apiToken,
     use_saved_token: useSavedToken,
     clear_saved_token: clearToken,
diff --git a/abogen/web/templates/settings.html b/abogen/web/templates/settings.html
index dc721d8..0722c99 100644
--- a/abogen/web/templates/settings.html
+++ b/abogen/web/templates/settings.html
@@ -444,6 +444,10 @@
                 <label for="audiobookshelf_collection_id">Collection ID (optional)</label>
                 <input type="text" id="audiobookshelf_collection_id" name="audiobookshelf_collection_id" value="{{ integrations.audiobookshelf.collection_id }}">
               </div>
+              <div class="field__group">
+                <label for="audiobookshelf_folder_id">Folder ID (optional)</label>
+                <input type="text" id="audiobookshelf_folder_id" name="audiobookshelf_folder_id" value="{{ integrations.audiobookshelf.folder_id }}">
+              </div>
             </div>
             <div class="field field--inline">
               <div class="field__group">