diff --git a/pro_tes/api/proTes_policy.conf b/pro_tes/api/proTes_policy.conf
new file mode 100644
index 0000000..6cbfff2
--- /dev/null
+++ b/pro_tes/api/proTes_policy.conf
@@ -0,0 +1,31 @@
+# Request Definition
+# This section defines the structure of incoming access requests, including the subject (user), object (resource), and action.
+[request_definition]
+r = sub, obj, act
+
+# Policy Definition
+# This section specifies the structure of policies, detailing which roles have access to which resources and actions.
+[policy_definition]
+p = sub, obj, act
+
+# Role Definition
+# 'g' defines general group membership, while 'g2' is used for resource-specific roles like owner, maintainer, and viewer.
+[role_definition]
+g = _, _
+g2 = _, _, _  # for resource-specific roles
+
+# Policy Effect
+# Determines the policy effect, allowing access if any policy matches.
+[policy_effect]
+e = some(where (p.eft == allow))
+
+# Matchers
+# This section contains the custom logic for access control, specifying how roles and actions map to permissions.
+# Check if the user is a group member and is attempting to create a new resource.
+m = g(r.sub, "group_member") && r.obj == "/tasks" && r.act == "POST" ||
+    # Allow full access to the resource for its owner.
+    g2(r.sub, "owner", r.obj) ||
+    # Allow maintainers to view and cancel tasks but not modify access permissions.
+    g2(r.sub, "maintainer", r.obj) && (r.act == "GET" || r.act == "POST:/tasks/{task-id}:cancel") ||
+    # Allow viewers to only view tasks and perform no other actions.
+    g2(r.sub, "viewer", r.obj) && r.act == "GET"
diff --git a/pro_tes/config.yaml b/pro_tes/config.yaml
index 78ea53c..2553012 100644
--- a/pro_tes/config.yaml
+++ b/pro_tes/config.yaml
@@ -17,7 +17,10 @@ server:
 # Cf. https://foca.readthedocs.io/en/latest/modules/foca.models.html#foca.models.config.SecurityConfig
 security:
   auth:
+    required: True
     add_key_to_claims: True
+    claim_identity: sub
+    claim_issuer: iss
     algorithms:
       - RS256
     allow_expired: False
@@ -26,6 +29,12 @@ security:
       - userinfo
       - public_key
     validation_checks: any
+  access_control:
+    db_name: proTesAccess
+    collection_name: permissions
+    model: proTES/pro_tes/api/proTes_policy.conf
+    owner_headers: ['user_id']
+    user_headers: ['user_id']
 
 # Database configuration
 # Cf. https://foca.readthedocs.io/en/latest/modules/foca.models.html#foca.models.config.DBConfig
@@ -62,7 +71,6 @@ api:
           - bearerAuth: []
       add_security_fields:
         x-bearerInfoFunc: foca.security.auth.validate_token
-      disable_auth: True
       connexion:
         strict_validation: True
         # current specs have inconsistency, therefore disabling response validation
diff --git a/pro_tes/ga4gh/tes/server.py b/pro_tes/ga4gh/tes/server.py
index 008551a..408a903 100644
--- a/pro_tes/ga4gh/tes/server.py
+++ b/pro_tes/ga4gh/tes/server.py
@@ -4,6 +4,10 @@
 
 from connexion import request  # type: ignore
 from foca.utils.logging import log_traffic  # type: ignore
+from foca.security.access_control.register_access_control import (
+    check_permissions
+)   # type: ignore
+
 
 from pro_tes.ga4gh.tes.service_info import ServiceInfo
 from pro_tes.ga4gh.tes.task_runs import TaskRuns
@@ -33,6 +37,7 @@ def CancelTask(
 
 # POST /tasks
 @log_traffic
+@check_permissions
 def CreateTask(*args, **kwargs) -> dict:
     """Create task.
 
diff --git a/requirements.txt b/requirements.txt
index 983ac80..62b37cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,3 +10,4 @@ types-PyYAML>=6.0.12
 types-requests>=2.28.5
 types-simplejson>=3.17.7
 types-urllib3>=1.26.17
+pymongo==4.7