diff --git a/.gitignore b/.gitignore
index 943acb5e..ca6b3659 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,4 @@ canaille/conf/*.pem
 canaille/conf/*.pub
 canaille/conf/*.key
 .vscode
+dump.json
diff --git a/canaille/backends/ldap/models.py b/canaille/backends/ldap/models.py
index 8a04b689..5d90c41b 100644
--- a/canaille/backends/ldap/models.py
+++ b/canaille/backends/ldap/models.py
@@ -1,5 +1,4 @@
 import ldap.filter
-from flask import current_app
 
 import canaille.core.models
 import canaille.oidc.models
@@ -51,8 +50,7 @@ class User(canaille.core.models.User, LDAPObject):
         return super().match_filter(filter)
 
     def save(self):
-        if current_app.features.has_otp and not self.secret_token:
-            self.initialize_otp()
+        super().save()
 
         group_attr = self.python_attribute_to_ldap("groups")
         if group_attr not in self.changes:
diff --git a/canaille/backends/memory/backend.py b/canaille/backends/memory/backend.py
index 853218cb..d8c3aedc 100644
--- a/canaille/backends/memory/backend.py
+++ b/canaille/backends/memory/backend.py
@@ -5,7 +5,6 @@ from typing import Any
 
 from flask import current_app
 
-import canaille.backends.memory.models
 from canaille.backends import Backend
 from canaille.backends import get_lockout_delay_message
 
@@ -138,12 +137,9 @@ class MemoryBackend(Backend):
         return results[0] if results else None
 
     def save(self, instance):
-        if (
-            isinstance(instance, canaille.backends.memory.models.User)
-            and current_app.features.has_otp
-            and not instance.secret_token
-        ):
-            instance.initialize_otp()
+        # run the instance save callback if existing
+        if hasattr(instance, "save"):
+            instance.save()
 
         if not instance.id:
             instance.id = str(uuid.uuid4())
@@ -160,14 +156,11 @@ class MemoryBackend(Backend):
 
     def delete(self, instance):
         # run the instance delete callback if existing
-        delete_callback = instance.delete() if hasattr(instance, "delete") else iter([])
-        next(delete_callback, None)
+        if hasattr(instance, "delete"):
+            instance.delete()
 
         self.index_delete(instance)
 
-        # run the instance delete callback again if existing
-        next(delete_callback, None)
-
     def reload(self, instance):
         # run the instance reload callback if existing
         reload_callback = instance.reload() if hasattr(instance, "reload") else iter([])
diff --git a/canaille/backends/sql/backend.py b/canaille/backends/sql/backend.py
index 726ecff7..5f5b0234 100644
--- a/canaille/backends/sql/backend.py
+++ b/canaille/backends/sql/backend.py
@@ -134,15 +134,12 @@ class SQLBackend(Backend):
 
     def delete(self, instance):
         # run the instance delete callback if existing
-        save_callback = instance.delete() if hasattr(instance, "delete") else iter([])
-        next(save_callback, None)
+        if hasattr(instance, "delete"):
+            instance.delete()
 
         SQLBackend.instance.db_session.delete(instance)
         SQLBackend.instance.db_session.commit()
 
-        # run the instance delete callback again if existing
-        next(save_callback, None)
-
     def reload(self, instance):
         # run the instance reload callback if existing
         reload_callback = instance.reload() if hasattr(instance, "reload") else iter([])
diff --git a/canaille/backends/sql/models.py b/canaille/backends/sql/models.py
index caa1822a..4d90a440 100644
--- a/canaille/backends/sql/models.py
+++ b/canaille/backends/sql/models.py
@@ -2,7 +2,6 @@ import datetime
 import typing
 import uuid
 
-from flask import current_app
 from sqlalchemy import Boolean
 from sqlalchemy import Column
 from sqlalchemy import ForeignKey
@@ -112,10 +111,7 @@ class User(canaille.core.models.User, Base, SqlAlchemyModel):
     one_time_password_emission_date: Mapped[datetime.datetime] = mapped_column(
         TZDateTime(timezone=True), nullable=True
     )
-
-    def save(self):
-        if current_app.features.has_otp and not self.secret_token:
-            self.initialize_otp()
+    scim_id: Mapped[str] = mapped_column(String, nullable=True, unique=True)
 
     @property
     def password_failure_timestamps(self):
diff --git a/canaille/core/models.py b/canaille/core/models.py
index b1d23cda..7ea4f2c7 100644
--- a/canaille/core/models.py
+++ b/canaille/core/models.py
@@ -4,11 +4,17 @@ from typing import Annotated
 from typing import ClassVar
 
 from flask import current_app
+from httpx import Client as httpx_client
+from scim2_client.engines.httpx import SyncSCIMClient
+from scim2_models import SearchRequest
 
+from canaille.app import models
+from canaille.backends import Backend
 from canaille.backends.models import Model
 from canaille.core.configuration import Permission
 from canaille.core.mails import send_one_time_password_mail
 from canaille.core.sms import send_one_time_password_sms
+from canaille.scim.models import user_from_canaille_to_scim_for_client
 
 HOTP_LOOK_AHEAD_WINDOW = 10
 OTP_DIGITS = 6
@@ -278,10 +284,20 @@ class User(Model):
     one_time_password_emission_date: datetime.datetime | None = None
     """A DateTime indicating when the user last emitted an email or sms one-time password."""
 
+    scim_id: str | None = None
+
     _readable_fields = None
     _writable_fields = None
     _permissions = None
 
+    def save(self):
+        if current_app.features.has_otp and not self.secret_token:
+            self.initialize_otp()
+        self.propagate_scim_changes()
+
+    def delete(self):
+        self.propagate_scim_delete()
+
     def has_password(self) -> bool:
         """Check whether a password has been set for the user."""
         return self.password is not None
@@ -486,6 +502,57 @@ class User(Model):
         ).total_seconds()
         return max(calculated_delay - time_since_last_failed_bind, 0)
 
+    def propagate_scim_changes(self):
+        for client in self.get_clients():
+            tokens = Backend.instance.query(models.Token, subject=self, client=client)
+            if tokens:
+                token = tokens[0]
+                client = httpx_client(
+                    base_url=client.client_uri,
+                    headers={"Authorization": f"Bearer {token.access_token}"},
+                )
+                scim = SyncSCIMClient(client)
+                scim.discover()
+                User = scim.get_resource_model("User")
+                EnterpriseUser = User.get_extension_model("EnterpriseUser")
+                user = user_from_canaille_to_scim_for_client(self, User, EnterpriseUser)
+
+                req = SearchRequest(filter=f'userName eq "{self.user_name}"')
+                response = scim.query(User, search_request=req)
+
+                if not response:
+                    try:
+                        scim.create(user)
+                    except:
+                        current_app.logger.warning(
+                            f"SCIM User {self.user_name} creation for client {client.client_name} failed"
+                        )
+                else:
+                    user.id = response.id
+                    try:
+                        scim.replace(user)
+                    except:
+                        current_app.logger.warning(
+                            f"SCIM User {self.user_name} update for client {client.client_name} failed"
+                        )
+
+    def propagate_scim_delete(self):
+        client = httpx_client(
+            base_url="http://localhost:8080",
+            headers={"Authorization": "Bearer MON_SUPER_TOKEN"},
+        )
+        scim = SyncSCIMClient(client)
+        scim.discover()
+        User = scim.get_resource_model("User")
+        try:
+            scim.delete(User, self.scim_id)
+        except:
+            current_app.logger.warning(f"SCIM User {self.user_name} delete failed")
+
+    def get_clients(self):
+        consents = Backend.instance.query(models.Consent, subject=self)
+        return {t.client for t in consents}
+
 
 class Group(Model):
     """User model, based on the `SCIM Group schema
diff --git a/canaille/scim/models.py b/canaille/scim/models.py
index ce446215..65c54166 100644
--- a/canaille/scim/models.py
+++ b/canaille/scim/models.py
@@ -289,3 +289,86 @@ def group_from_scim_to_canaille(scim_group: Group, group):
     group.members = members
 
     return group
+
+
+def user_from_canaille_to_scim_for_client(user, User, EnterpriseUser):
+    scim_user = User(
+        meta=Meta(
+            resource_type="User",
+            created=user.created,
+            last_modified=user.last_modified,
+            location=url_for("scim.query_user", user=user, _external=True),
+        ),
+        id=user.id,
+        user_name=user.user_name,
+        preferred_language=user.preferred_language,
+        name=User.Name(
+            formatted=user.formatted_name,
+            family_name=user.family_name,
+            given_name=user.given_name,
+        )
+        if (user.formatted_name or user.family_name or user.given_name)
+        else None,
+        display_name=user.display_name,
+        title=user.title,
+        profile_url=user.profile_url,
+        emails=[
+            User.Emails(
+                value=email,
+                primary=email == user.emails[0],
+            )
+            for email in user.emails or []
+        ]
+        or None,
+        phone_numbers=[
+            User.PhoneNumbers(
+                value=phone_number, primary=phone_number == user.phone_numbers[0]
+            )
+            for phone_number in user.phone_numbers or []
+        ]
+        or None,
+        addresses=[
+            User.Addresses(
+                formatted=user.formatted_address,
+                street_address=user.street,
+                postal_code=user.postal_code,
+                locality=user.locality,
+                region=user.region,
+                primary=True,
+            )
+        ]
+        if (
+            user.formatted_address
+            or user.street
+            or user.postal_code
+            or user.locality
+            or user.region
+        )
+        else None,
+        photos=[
+            User.Photos(
+                value=url_for(
+                    "core.account.photo", user=user, field="photo", _external=True
+                ),
+                primary=True,
+                type=User.Photos.Type.photo,
+            )
+        ]
+        if user.photo
+        else None,
+        groups=[
+            User.Groups(
+                value=group.id,
+                display=group.display_name,
+                ref=url_for("scim.query_group", group=group, _external=True),
+            )
+            for group in user.groups or []
+        ]
+        or None,
+    )
+    scim_user[EnterpriseUser] = EnterpriseUser(
+        employee_number=user.employee_number,
+        organization=user.organization,
+        department=user.department,
+    )
+    return scim_user
diff --git a/pyproject.toml b/pyproject.toml
index 5a66b968..07ae80c7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,6 +32,7 @@ requires-python = ">=3.10"
 dependencies = [
     "flask >= 3.0.0",
     "flask-wtf >= 1.2.1",
+    "httpx>=0.28.1",
     "pydantic-settings >= 2.0.3",
     "requests>=2.32.3",
     "wtforms >= 3.1.1",
diff --git a/uv.lock b/uv.lock
index 7f8e0e91..c8e48be0 100644
--- a/uv.lock
+++ b/uv.lock
@@ -37,6 +37,21 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/78/b6/6307fbef88d9b5ee7421e68d78a9f162e0da4900bc5f5793f6d3d0e34fb8/annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53", size = 13643 },
 ]
 
+[[package]]
+name = "anyio"
+version = "4.7.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "exceptiongroup", marker = "python_full_version < '3.11'" },
+    { name = "idna" },
+    { name = "sniffio" },
+    { name = "typing-extensions", marker = "python_full_version < '3.13'" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/f6/40/318e58f669b1a9e00f5c4453910682e2d9dd594334539c7b7817dabb765f/anyio-4.7.0.tar.gz", hash = "sha256:2f834749c602966b7d456a7567cafcb309f96482b5081d14ac93ccd457f9dd48", size = 177076 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/a0/7a/4daaf3b6c08ad7ceffea4634ec206faeff697526421c20f07628c7372156/anyio-4.7.0-py3-none-any.whl", hash = "sha256:ea60c3723ab42ba6fff7e8ccb0488c898ec538ff4df1f1d5e642c3601d07e352", size = 93052 },
+]
+
 [[package]]
 name = "atpublic"
 version = "5.0"
@@ -126,6 +141,7 @@ source = { editable = "." }
 dependencies = [
     { name = "flask" },
     { name = "flask-wtf" },
+    { name = "httpx" },
     { name = "pydantic-settings" },
     { name = "requests" },
     { name = "wtforms" },
@@ -229,6 +245,7 @@ requires-dist = [
     { name = "flask-babel", marker = "extra == 'front'", specifier = ">=4.0.0" },
     { name = "flask-themer", marker = "extra == 'front'", specifier = ">=2.0.0" },
     { name = "flask-wtf", specifier = ">=1.2.1" },
+    { name = "httpx", specifier = ">=0.28.1" },
     { name = "otpauth", marker = "extra == 'otp'", specifier = ">=2.1.1" },
     { name = "passlib", marker = "extra == 'mysql'", specifier = ">=1.7.4" },
     { name = "passlib", marker = "extra == 'postgresql'", specifier = ">=1.7.4" },
@@ -549,7 +566,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/98/65/13d9e76ca19b0ba5603d71ac8424b5694415b348e719db277b5edc985ff5/cryptography-44.0.0-cp37-abi3-manylinux_2_28_aarch64.whl", hash = "sha256:761817a3377ef15ac23cd7834715081791d4ec77f9297ee694ca1ee9c2c7e5eb", size = 3915420 },
     { url = "https://files.pythonhosted.org/packages/b1/07/40fe09ce96b91fc9276a9ad272832ead0fddedcba87f1190372af8e3039c/cryptography-44.0.0-cp37-abi3-manylinux_2_28_x86_64.whl", hash = "sha256:3c672a53c0fb4725a29c303be906d3c1fa99c32f58abe008a82705f9ee96f40b", size = 4154498 },
     { url = "https://files.pythonhosted.org/packages/75/ea/af65619c800ec0a7e4034207aec543acdf248d9bffba0533342d1bd435e1/cryptography-44.0.0-cp37-abi3-manylinux_2_34_aarch64.whl", hash = "sha256:4ac4c9f37eba52cb6fbeaf5b59c152ea976726b865bd4cf87883a7e7006cc543", size = 3932569 },
-    { url = "https://files.pythonhosted.org/packages/4e/d5/9cc182bf24c86f542129565976c21301d4ac397e74bf5a16e48241aab8a6/cryptography-44.0.0-cp37-abi3-manylinux_2_34_x86_64.whl", hash = "sha256:60eb32934076fa07e4316b7b2742fa52cbb190b42c2df2863dbc4230a0a9b385", size = 4164756 },
     { url = "https://files.pythonhosted.org/packages/c7/af/d1deb0c04d59612e3d5e54203159e284d3e7a6921e565bb0eeb6269bdd8a/cryptography-44.0.0-cp37-abi3-musllinux_1_2_aarch64.whl", hash = "sha256:ed3534eb1090483c96178fcb0f8893719d96d5274dfde98aa6add34614e97c8e", size = 4016721 },
     { url = "https://files.pythonhosted.org/packages/bd/69/7ca326c55698d0688db867795134bdfac87136b80ef373aaa42b225d6dd5/cryptography-44.0.0-cp37-abi3-musllinux_1_2_x86_64.whl", hash = "sha256:f3f6fdfa89ee2d9d496e2c087cebef9d4fcbb0ad63c40e821b39f74bf48d9c5e", size = 4240915 },
     { url = "https://files.pythonhosted.org/packages/ef/d4/cae11bf68c0f981e0413906c6dd03ae7fa864347ed5fac40021df1ef467c/cryptography-44.0.0-cp37-abi3-win32.whl", hash = "sha256:eb33480f1bad5b78233b0ad3e1b0be21e8ef1da745d8d2aecbb20671658b9053", size = 2757925 },
@@ -560,7 +576,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/d0/c7/c656eb08fd22255d21bc3129625ed9cd5ee305f33752ef2278711b3fa98b/cryptography-44.0.0-cp39-abi3-manylinux_2_28_aarch64.whl", hash = "sha256:c5eb858beed7835e5ad1faba59e865109f3e52b3783b9ac21e7e47dc5554e289", size = 3915417 },
     { url = "https://files.pythonhosted.org/packages/ef/82/72403624f197af0db6bac4e58153bc9ac0e6020e57234115db9596eee85d/cryptography-44.0.0-cp39-abi3-manylinux_2_28_x86_64.whl", hash = "sha256:f53c2c87e0fb4b0c00fa9571082a057e37690a8f12233306161c8f4b819960b7", size = 4155160 },
     { url = "https://files.pythonhosted.org/packages/a2/cd/2f3c440913d4329ade49b146d74f2e9766422e1732613f57097fea61f344/cryptography-44.0.0-cp39-abi3-manylinux_2_34_aarch64.whl", hash = "sha256:9e6fc8a08e116fb7c7dd1f040074c9d7b51d74a8ea40d4df2fc7aa08b76b9e6c", size = 3932331 },
-    { url = "https://files.pythonhosted.org/packages/31/d9/90409720277f88eb3ab72f9a32bfa54acdd97e94225df699e7713e850bd4/cryptography-44.0.0-cp39-abi3-manylinux_2_34_x86_64.whl", hash = "sha256:9abcc2e083cbe8dde89124a47e5e53ec38751f0d7dfd36801008f316a127d7ba", size = 4165207 },
     { url = "https://files.pythonhosted.org/packages/7f/df/8be88797f0a1cca6e255189a57bb49237402b1880d6e8721690c5603ac23/cryptography-44.0.0-cp39-abi3-musllinux_1_2_aarch64.whl", hash = "sha256:d2436114e46b36d00f8b72ff57e598978b37399d2786fd39793c36c6d5cb1c64", size = 4017372 },
     { url = "https://files.pythonhosted.org/packages/af/36/5ccc376f025a834e72b8e52e18746b927f34e4520487098e283a719c205e/cryptography-44.0.0-cp39-abi3-musllinux_1_2_x86_64.whl", hash = "sha256:a01956ddfa0a6790d594f5b34fc1bfa6098aca434696a03cfdbe469b8ed79285", size = 4239657 },
     { url = "https://files.pythonhosted.org/packages/46/b0/f4f7d0d0bcfbc8dd6296c1449be326d04217c57afb8b2594f017eed95533/cryptography-44.0.0-cp39-abi3-win32.whl", hash = "sha256:eca27345e1214d1b9f9490d200f9db5a874479be914199194e746c893788d417", size = 2758672 },
@@ -784,6 +799,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/ac/38/08cc303ddddc4b3d7c628c3039a61a3aae36c241ed01393d00c2fd663473/greenlet-3.1.1-cp313-cp313t-musllinux_1_1_x86_64.whl", hash = "sha256:411f015496fec93c1c8cd4e5238da364e1da7a124bcb293f085bf2860c32c6f6", size = 1142112 },
 ]
 
+[[package]]
+name = "h11"
+version = "0.14.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/f5/38/3af3d3633a34a3316095b39c8e8fb4853a28a536e55d347bd8d8e9a14b03/h11-0.14.0.tar.gz", hash = "sha256:8f19fbbe99e72420ff35c00b27a34cb9937e902a8b810e2c88300c6f0a3b699d", size = 100418 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/95/04/ff642e65ad6b90db43e668d70ffb6736436c7ce41fcc549f4e9472234127/h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761", size = 58259 },
+]
+
 [[package]]
 name = "honcho"
 version = "2.0.0"
@@ -796,6 +820,34 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/48/1c/25631fc359955569e63f5446dbb7022c320edf9846cbe892ee5113433a7e/honcho-2.0.0-py3-none-any.whl", hash = "sha256:56dcd04fc72d362a4befb9303b1a1a812cba5da283526fbc6509be122918ddf3", size = 22093 },
 ]
 
+[[package]]
+name = "httpcore"
+version = "1.0.7"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "certifi" },
+    { name = "h11" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/6a/41/d7d0a89eb493922c37d343b607bc1b5da7f5be7e383740b4753ad8943e90/httpcore-1.0.7.tar.gz", hash = "sha256:8551cb62a169ec7162ac7be8d4817d561f60e08eaa485234898414bb5a8a0b4c", size = 85196 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/87/f5/72347bc88306acb359581ac4d52f23c0ef445b57157adedb9aee0cd689d2/httpcore-1.0.7-py3-none-any.whl", hash = "sha256:a3fff8f43dc260d5bd363d9f9cf1830fa3a458b332856f34282de498ed420edd", size = 78551 },
+]
+
+[[package]]
+name = "httpx"
+version = "0.28.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "anyio" },
+    { name = "certifi" },
+    { name = "httpcore" },
+    { name = "idna" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/b1/df/48c586a5fe32a0f01324ee087459e112ebb7224f646c0b5023f5e79e9956/httpx-0.28.1.tar.gz", hash = "sha256:75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc", size = 141406 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/2a/39/e50c7c3a983047577ee07d2a9e53faf5a69493943ec3f6a384bdc792deb2/httpx-0.28.1-py3-none-any.whl", hash = "sha256:d909fcccc110f8c7faf814ca82a9a4d816bc5a6dbfea25d6591d6985b8ba59ad", size = 73517 },
+]
+
 [[package]]
 name = "identify"
 version = "2.6.3"
@@ -1749,6 +1801,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/72/14/1c4107f0e625a4f95c5412b82f20ea05665c515d74e724898d4c3a8c7ac5/smtpdfix-0.5.2-py3-none-any.whl", hash = "sha256:85045723df6bb492af2ddbadfb0b8f8b5c52f69bb6fd4f6bca78c4f182d6c2b7", size = 17294 },
 ]
 
+[[package]]
+name = "sniffio"
+version = "1.3.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/a2/87/a6771e1546d97e7e041b6ae58d80074f81b7d5121207425c964ddf5cfdbd/sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc", size = 20372 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/e9/44/75a9c9421471a6c4805dbf2356f7c181a29c1879239abab1ea2cc8f38b40/sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2", size = 10235 },
+]
+
 [[package]]
 name = "snowballstemmer"
 version = "2.2.0"