diff --git a/setup/shopinvader_api_payment_provider_worldline/odoo/addons/shopinvader_api_payment_provider_worldline b/setup/shopinvader_api_payment_provider_worldline/odoo/addons/shopinvader_api_payment_provider_worldline
new file mode 120000
index 00000000..c6c21ec2
--- /dev/null
+++ b/setup/shopinvader_api_payment_provider_worldline/odoo/addons/shopinvader_api_payment_provider_worldline
@@ -0,0 +1 @@
+../../../../shopinvader_api_payment_provider_worldline
\ No newline at end of file
diff --git a/setup/shopinvader_api_payment_provider_worldline/setup.py b/setup/shopinvader_api_payment_provider_worldline/setup.py
new file mode 100644
index 00000000..28c57bb6
--- /dev/null
+++ b/setup/shopinvader_api_payment_provider_worldline/setup.py
@@ -0,0 +1,6 @@
+import setuptools
+
+setuptools.setup(
+    setup_requires=['setuptools-odoo'],
+    odoo_addon=True,
+)
diff --git a/shopinvader_api_payment_provider_worldline/README.rst b/shopinvader_api_payment_provider_worldline/README.rst
new file mode 100644
index 00000000..e69de29b
diff --git a/shopinvader_api_payment_provider_worldline/__init__.py b/shopinvader_api_payment_provider_worldline/__init__.py
new file mode 100644
index 00000000..9ef81445
--- /dev/null
+++ b/shopinvader_api_payment_provider_worldline/__init__.py
@@ -0,0 +1,2 @@
+from . import models
+from . import routers
diff --git a/shopinvader_api_payment_provider_worldline/__manifest__.py b/shopinvader_api_payment_provider_worldline/__manifest__.py
new file mode 100644
index 00000000..803ccf9b
--- /dev/null
+++ b/shopinvader_api_payment_provider_worldline/__manifest__.py
@@ -0,0 +1,19 @@
+# Copyright 2025 ACSONE SA/NV
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+{
+    "name": "Shopinvader Api Payment Provider Wordline",
+    "summary": """
+        Specific routes for Worldline payments from Shopinvader""",
+    "version": "16.0.1.0.0",
+    "license": "AGPL-3",
+    "author": "ACSONE SA/NV,Shopinvader",
+    "website": "https://github.com/shopinvader/odoo-shopinvader-payment",
+    "depends": [
+        "fastapi",
+        "shopinvader_api_payment",
+        "payment_worldline",
+    ],
+    "data": [],
+    "demo": [],
+}
diff --git a/shopinvader_api_payment_provider_worldline/models/__init__.py b/shopinvader_api_payment_provider_worldline/models/__init__.py
new file mode 100644
index 00000000..cb741e90
--- /dev/null
+++ b/shopinvader_api_payment_provider_worldline/models/__init__.py
@@ -0,0 +1 @@
+from . import payment_transaction
diff --git a/shopinvader_api_payment_provider_worldline/models/payment_transaction.py b/shopinvader_api_payment_provider_worldline/models/payment_transaction.py
new file mode 100644
index 00000000..ae17a463
--- /dev/null
+++ b/shopinvader_api_payment_provider_worldline/models/payment_transaction.py
@@ -0,0 +1,28 @@
+# Copyright Odoo SA (https://odoo.com)
+# Copyright 2025 ACSONE SA (https://acsone.eu).
+# License LGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from urllib.parse import urljoin
+
+from werkzeug import urls
+
+from odoo import models
+
+
+class PaymentTransaction(models.Model):
+    _inherit = "payment.transaction"
+
+    def _worldline_create_checkout_session_get_payload(self):
+        self.ensure_one()
+        payload = super()._worldline_create_checkout_session_get_payload()
+        if not self.env.context.get("shopinvader_api_payment"):
+            return payload
+        shopinvader_api_base_url = self.shopinvader_frontend_redirect_url
+        return_url = urljoin(
+            shopinvader_api_base_url, "/shopinvader/payment/providers/worldline/return"
+        )
+        return_url_params = urls.url_encode({"provider_id": str(self.provider_id.id)})
+        payload["hostedCheckoutSpecificInput"][
+            "returnUrl"
+        ] = f"{return_url}?{return_url_params}"
+        return payload
diff --git a/shopinvader_api_payment_provider_worldline/readme/CONTRIBUTORS.rst b/shopinvader_api_payment_provider_worldline/readme/CONTRIBUTORS.rst
new file mode 100644
index 00000000..eea6cac0
--- /dev/null
+++ b/shopinvader_api_payment_provider_worldline/readme/CONTRIBUTORS.rst
@@ -0,0 +1 @@
+* Benjamin Willig <benjamin.willig@acsone.eu>
diff --git a/shopinvader_api_payment_provider_worldline/readme/USAGE.rst b/shopinvader_api_payment_provider_worldline/readme/USAGE.rst
new file mode 100644
index 00000000..f4cbd863
--- /dev/null
+++ b/shopinvader_api_payment_provider_worldline/readme/USAGE.rst
@@ -0,0 +1,6 @@
+**Specific procedure for Worldline**
+
+First call the POST `/payment/transactions` as described in the core addon `shopinvader_api_payment`.
+This method will return a `TransactionProcessingValues` schema in which you will find a `redirect_form_html` HTML form.
+This HTML form must just be submitted by the front to call the Worldline services.
+After worldline has finished, the frontend redirect url will be called back.
diff --git a/shopinvader_api_payment_provider_worldline/routers/__init__.py b/shopinvader_api_payment_provider_worldline/routers/__init__.py
new file mode 100644
index 00000000..4ece639e
--- /dev/null
+++ b/shopinvader_api_payment_provider_worldline/routers/__init__.py
@@ -0,0 +1 @@
+from . import payment_worldline
diff --git a/shopinvader_api_payment_provider_worldline/routers/payment_worldline.py b/shopinvader_api_payment_provider_worldline/routers/payment_worldline.py
new file mode 100644
index 00000000..597f0b05
--- /dev/null
+++ b/shopinvader_api_payment_provider_worldline/routers/payment_worldline.py
@@ -0,0 +1,129 @@
+# Copyright Odoo SA (https://odoo.com)
+# Copyright 2025 ACSONE SA (https://acsone.eu).
+# License LGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+import logging
+import pprint
+from typing import Annotated
+from urllib.parse import quote_plus
+
+from fastapi import Depends, Request
+from fastapi.responses import RedirectResponse
+from werkzeug.exceptions import Forbidden
+
+from odoo import _, api, models
+from odoo.exceptions import ValidationError
+
+from odoo.addons.fastapi.dependencies import odoo_env
+from odoo.addons.payment_worldline.controllers.main import WorldlineController
+from odoo.addons.shopinvader_api_payment.routers import payment_router
+from odoo.addons.shopinvader_api_payment.routers.utils import (
+    add_query_params_in_url,
+    tx_state_to_redirect_status,
+)
+
+_logger = logging.getLogger(__name__)
+
+
+@payment_router.get("/payment/providers/worldline/return")
+async def worldline_return(
+    request: Request,
+    odoo_env: Annotated[api.Environment, Depends(odoo_env)],
+) -> RedirectResponse:
+    """Handle SIPS return.
+
+    After the payment, the user is redirected with a POST to this endpoint. We handle
+    the notification data to update the transaction status. We then redirect the browser
+    with a GET to the frontend_return_url, with the transaction reference as parameter.
+
+    Future: we could also return a unguessable transaction uuid that the front could the
+    use to consult /payment/transactions/{uuid} and obtain the transaction status.
+    """
+    data = await request.form()
+    _logger.info(
+        "return notification received from Worldline with data:\n%s",
+        pprint.pformat(data),
+    )
+    params = request.query_params
+    hosted_checkout_id = params.get("hostedCheckoutId")
+    provider_id = int(params.get("provider_id", 0))
+
+    provider = odoo_env["payment.provider"].sudo().browse(provider_id).exists()
+    if not provider or provider.code != "worldline":
+        _logger.warning("Received payment data with invalid provider id.")
+        raise Forbidden()
+
+    checkout_session_data = provider._worldline_make_request(
+        f"hostedcheckouts/{hosted_checkout_id}", method="GET"
+    )
+    _logger.info(
+        "Response of '/hostedcheckouts/<hostedCheckoutId>' request:\n%s",
+        pprint.pformat(checkout_session_data),
+    )
+    notification_data = checkout_session_data.get("createdPaymentOutput", {})
+
+    tx_sudo = (
+        odoo_env["payment.transaction"]
+        .sudo()
+        ._get_tx_from_notification_data("worldline", notification_data)
+    )
+    reference = tx_sudo.display_name
+    frontend_redirect_url = tx_sudo.shopinvader_frontend_redirect_url
+    try:
+        tx_sudo._handle_notification_data("worldline", notification_data)
+        status = tx_state_to_redirect_status(tx_sudo.state)
+    except Exception:
+        _logger.exception("unable to handle worldline notification data", exc_info=True)
+        status = "error"
+    return RedirectResponse(
+        url=add_query_params_in_url(
+            frontend_redirect_url,
+            {"status": status, "reference": quote_plus(reference)},
+        ),
+        status_code=303,
+    )
+
+
+@payment_router.post("/payment/providers/worldline/webhook")
+async def worldline_webhook(
+    request: Request,
+    odoo_env: Annotated[api.Environment, Depends(odoo_env)],
+):
+    """Handle Wordline webhook."""
+    data = await request.json()
+    _logger.info(
+        "webhook notification received from SIPS with data:\n%s", pprint.pformat(data)
+    )
+    try:
+        tx_sudo = (
+            odoo_env["payment.transaction"]
+            .sudo()
+            ._get_tx_from_notification_data(
+                "worldline",
+                data,
+            )
+        )
+        received_signature = request.headers.get("X-GCS-Signature")
+        body = await request.body()
+        odoo_env[
+            "shopinvader_provider_worldline.payment_worldline_router.helper"
+        ]._verify_worldline_signature(tx_sudo, received_signature, body)
+        tx_sudo._handle_notification_data("worldline", data)
+    except Exception:
+        _logger.exception("unable to handle worldline notification data", exc_info=True)
+    return ""
+
+
+class ShopinvaderApiPaymentProviderWordlineRouterHelper(models.AbstractModel):
+    _name = "shopinvader_provider_worldline.payment_worldline_router.helper"
+    _description = "ShopInvader API Payment Provider Worldline Router Helper"
+
+    def _verify_worldline_signature(self, tx_sudo, received_signature, data):
+        """Verify the Worldline signature."""
+        try:
+            WorldlineController._verify_notification_signature(
+                data, received_signature, tx_sudo
+            )
+        except Forbidden as ex:
+            _logger.exception(ex)
+            raise ValidationError(_("Unable to verify worldline signature")) from ex