diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 94dc27d1..d4e06c60 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,6 +1,8 @@
 name: Catalog consistency checks
 
-on: pull_request
+on:
+  pull_request:
+  push:
 
 jobs:
   build:
@@ -15,7 +17,7 @@ jobs:
         python-version: 3.11
     - name: Install toml python lib
       run: |
-        pip3 install toml
+        pip3 install toml jsonschema
     - name: Check TOML validity for apps.toml
       run: |
         python3 -c "import toml; toml.load(open('apps.toml'))"
diff --git a/apps.toml b/apps.toml
index e502b4ab..611dcf40 100644
--- a/apps.toml
+++ b/apps.toml
@@ -864,7 +864,7 @@ url = "https://github.com/YunoHost-Apps/element_ynh"
 
 [eleventy]
 category = "publishing"
-level = 7
+level = 1
 potential_alternative_to = [ "Blogger", "Blogspot", "Wix" ]
 state = "working"
 subtags = [ "websites", "blog" ]
@@ -928,6 +928,7 @@ url = "https://github.com/YunoHost-Apps/ethercalc_ynh"
 
 [etherpad]
 category = "office"
+level = 2
 potential_alternative_to = [ "Google Docs", "G Suite", "Microsoft Word", "Microsoft Office", "Office 365" ]
 state = "working"
 subtags = [ "text" ]
@@ -1657,6 +1658,7 @@ url = "https://github.com/YunoHost-Apps/jellyfin_ynh"
 
 [jellyfin-vue]
 category = "multimedia"
+level = 2
 potential_alternative_to = [ "Plex", "Netflix" ]
 state = "working"
 subtags = [ "music", "mediacenter" ]
@@ -2046,7 +2048,7 @@ url = "https://github.com/YunoHost-Apps/matomo_ynh"
 
 [matrix-appservice-irc]
 category = "communication"
-state = "inprogress"
+state = "working"
 subtags = [ "chat" ]
 url = "https://github.com/YunoHost-Apps/matrix-appservice-irc_ynh"
 
@@ -2067,7 +2069,7 @@ url = "https://github.com/YunoHost-Apps/matterbridge_ynh"
 
 [mattermost]
 category = "communication"
-level = 8
+level = 6
 potential_alternative_to = [ "Slack" ]
 state = "working"
 subtags = [ "chat" ]
@@ -2356,7 +2358,7 @@ url = "https://github.com/YunoHost-Apps/my_webapp_ynh"
 
 [mybb]
 category = "communication"
-level = 6
+level = 8
 state = "working"
 subtags = [ "forum" ]
 url = "https://github.com/YunoHost-Apps/mybb_ynh"
@@ -2946,7 +2948,7 @@ url = "https://github.com/YunoHost-Apps/prometheus_ynh"
 
 [prosody]
 category = "communication"
-level = 8
+level = 6
 state = "working"
 url = "https://github.com/YunoHost-Apps/prosody_ynh"
 
@@ -2964,10 +2966,11 @@ state = "notworking"
 url = "https://github.com/YunoHost-Apps/proxitok_ynh"
 
 [psitransfer]
-category = "small_utilities"
+category = "synchronization"
 level = 8
 potential_alternative_to = [ "WeTransfer" ]
 state = "working"
+subtags = [ "files" ]
 url = "https://github.com/YunoHost-Apps/psitransfer_ynh"
 
 [pterodactyl]
@@ -3119,7 +3122,7 @@ url = "https://github.com/YunoHost-Apps/roadiz_ynh"
 [rocketchat]
 antifeatures = [ "not-totally-free" ]
 category = "communication"
-level = 6
+level = 8
 potential_alternative_to = [ "Slack" ]
 state = "working"
 subtags = [ "chat" ]
@@ -3134,9 +3137,10 @@ subtags = [ "email" ]
 url = "https://github.com/YunoHost-Apps/roundcube_ynh"
 
 [rportd]
+antifeatures = [ "deprecated-software" ]
 category = "system_tools"
-level = 8
-state = "working"
+level = 0
+state = "notworking"
 subtags = [ "monitoring" ]
 url = "https://github.com/YunoHost-Apps/rportd_ynh"
 
@@ -3226,7 +3230,7 @@ url = "https://github.com/YunoHost-Apps/seafile_ynh"
 [searx]
 antifeatures = [ "deprecated-software" ]
 category = "small_utilities"
-level = 8
+level = 7
 state = "working"
 url = "https://github.com/YunoHost-Apps/searx_ynh"
 
@@ -3544,7 +3548,7 @@ url = "https://github.com/drfred1981/subsonic_ynh"
 
 [sutom]
 category = "games"
-level = 6
+level = 8
 state = "working"
 url = "https://github.com/YunoHost-Apps/sutom_ynh"
 
diff --git a/logos/homeassistant.png b/logos/homeassistant.png
index 238c7109..13ca064c 100644
Binary files a/logos/homeassistant.png and b/logos/homeassistant.png differ
diff --git a/schemas/apps.toml.schema.json b/schemas/apps.toml.schema.json
new file mode 100644
index 00000000..4833c35d
--- /dev/null
+++ b/schemas/apps.toml.schema.json
@@ -0,0 +1,64 @@
+{
+    "$schema": "http://json-schema.org/draft-07/schema",
+    "$id": "https://github.com/YunoHost/apps/blob/master/schemas/apps.toml.schema.json",
+    "title": "Yunohost's apps.toml schema",
+    "version": "0",
+
+    "type": "object",
+    "required": [],
+    "additionalProperties": false,
+    "patternProperties": {
+        "^[a-z0-9_-]*$": {
+            "type": "object",
+            "required": ["url", "state"],
+            "additionalProperties": false,
+            "properties": {
+                "category": {
+                    "type": "string"
+                },
+                "subtags": {
+                    "type": "array",
+                    "items": {
+                        "type": "string"
+                    },
+                    "additionalItems": false
+                },
+                "level": {
+                    "type": "integer",
+                    "minimum": 0,
+                    "maximum": 8
+                },
+                "state": {
+                    "type": "string",
+                    "enum": ["working", "notworking", "inprogress"]
+                },
+                "url": {
+                    "type": "string",
+                    "format": "url"
+                },
+                "antifeatures": {
+                    "type": "array",
+                    "items": {
+                        "type": "string"
+                    },
+                    "additionalItems": false
+                },
+                "potential_alternative_to": {
+                    "type": "array",
+                    "items": {
+                        "type": "string"
+                    },
+                    "additionalItems": false
+                },
+                "revision": {
+                    "type": "string",
+                    "pattern": "^[a-z0-9]{32,64}$"
+                },
+                "branch": {
+                    "type": "string"
+                }
+            }
+        }
+    }
+
+}
diff --git a/schemas/categories.toml.schema.json b/schemas/categories.toml.schema.json
new file mode 100644
index 00000000..ebb9b95e
--- /dev/null
+++ b/schemas/categories.toml.schema.json
@@ -0,0 +1,52 @@
+{
+    "$schema": "http://json-schema.org/draft-07/schema",
+    "$id": "https://github.com/YunoHost/apps/blob/master/schemas/categories.toml.schema.json",
+    "title": "Yunohost's categories.toml schema",
+    "version": "0",
+
+    "$defs": {
+        "translated_string": {
+            "type": "object",
+            "required": ["en"],
+            "additionalProperties": false,
+            "patternProperties": {
+                "^[a-z]{2}$": {
+                    "type": "string"
+                }
+            }
+        }
+    },
+
+    "type": "object",
+    "required": [],
+    "additionalProperties": false,
+    "patternProperties": {
+        "^[a-z0-9_-]*$": {
+            "type": "object",
+            "required": ["icon", "title", "description"],
+            "additionalProperties": false,
+            "properties": {
+                "icon": {
+                    "type": "string"
+                },
+                "title": { "$ref": "#/$defs/translated_string" },
+                "description": { "$ref": "#/$defs/translated_string" },
+                "subtags": {
+                    "type": "object",
+                    "additionalProperties": false,
+                    "patternProperties": {
+                        "^[a-z_]*$": {
+                            "type": "object",
+                            "required": ["title"],
+                            "additionalProperties": false,
+                            "properties": {
+                                "title": { "$ref": "#/$defs/translated_string" }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+}
diff --git a/schemas/manifest.v2.schema.json b/schemas/manifest.v2.schema.json
index bb6f6b02..698affa9 100644
--- a/schemas/manifest.v2.schema.json
+++ b/schemas/manifest.v2.schema.json
@@ -7,14 +7,21 @@
     "type": "object",
     "$defs": {
         "translated_string": {
-            "type": "object",
-            "required": ["en"],
-            "additionalProperties": false,
-            "patternProperties": {
-                "^[a-z]{2}$": {
+            "anyOf": [
+                {
+                    "type": "object",
+                    "required": ["en"],
+                    "additionalProperties": false,
+                    "patternProperties": {
+                        "^[a-z]{2}$": {
+                            "type": "string"
+                        }
+                    }
+                },
+                {
                     "type": "string"
                 }
-            }
+            ]
         },
         "byte_size": {
             "type": "string",
@@ -26,11 +33,11 @@
         },
         "path_absolute": {
             "type": "string",
-            "pattern": "^/.*$"
+            "pattern": "^(__[A-Z_]*__)?/.*$"
         },
         "name_and_permission": {
             "type": "string",
-            "pattern": "^([a-z_][a-z0-9_-]{0,30})(:[rwx-]{3})?$"
+            "pattern": "^(([a-z_][a-z0-9_-]{0,30})|([_A-Z]*))(:[rwx-]{1,3})?$"
         },
         "sha256sum": {
             "type": "string",
@@ -142,6 +149,14 @@
                 }
             }
         },
+        "antifeatures": {
+            "type": "object",
+            "required": [],
+            "additionalProperties": false,
+            "patternProperties": {
+                "^[a-zA-Z0-9_-]*$": {"$ref": "#/$defs/translated_string"}
+            }
+        },
         "install": {
             "type": "object",
             "required": [],
@@ -184,6 +199,20 @@
                                     }
                                 }
                             ]
+                        },
+                        "pattern": {
+                            "type": "object",
+                            "required": [],
+                            "additionalProperties": false,
+                            "properties": {
+                                "regexp": {
+                                    "type": "string",
+                                    "format": "regex"
+                                },
+                                "error": {
+                                    "type": "string"
+                                }
+                            }
                         }
                     }
                 }
@@ -286,9 +315,10 @@
                                 },
                                 "additional_urls": {
                                     "type": "array",
-                                    "items": {
-                                        "type": "string"
-                                    }
+                                    "items": {"$ref": "#/$defs/path_absolute"}
+                                },
+                                "label": {
+                                    "type": "string"
                                 }
                             }
                         }
diff --git a/schemas/tests.v1.schema.json b/schemas/tests.v1.schema.json
index e2aca8b6..cacc6399 100644
--- a/schemas/tests.v1.schema.json
+++ b/schemas/tests.v1.schema.json
@@ -23,7 +23,8 @@
                 "^[a-z][a-z0-9_]*$": {
                     "anyOf": [
                         {"type": "string"},
-                        {"type": "number"}
+                        {"type": "number"},
+                        {"type": "boolean"}
                     ]
                 }
             }
diff --git a/tools/autoupdate_app_sources/autoupdate_app_sources.py b/tools/autoupdate_app_sources/autoupdate_app_sources.py
index 3e4b4d7f..48ff84f4 100644
--- a/tools/autoupdate_app_sources/autoupdate_app_sources.py
+++ b/tools/autoupdate_app_sources/autoupdate_app_sources.py
@@ -385,7 +385,7 @@ class AppAutoUpdater:
         if is_main:
 
             def repl(m):
-                return m.group(1) + new_version + m.group(3)
+                return m.group(1) + new_version + "~ynh1"
 
             content = re.sub(
                 r"(\s*version\s*=\s*[\"\'])([\d\.]+)(\~ynh\d+[\"\'])", repl, content
diff --git a/tools/catalog_linter.py b/tools/catalog_linter.py
old mode 100644
new mode 100755
index 32659899..6925cf81
--- a/tools/catalog_linter.py
+++ b/tools/catalog_linter.py
@@ -1,37 +1,103 @@
-import toml
+#!/usr/bin/env python3
+
+import json
 import sys
+from functools import cache
+from pathlib import Path
+from typing import Any, Dict, Generator, List, Tuple
 
-errors = []
+import jsonschema
+import toml
 
-catalog = toml.load(open('apps.toml'))
+APPS_ROOT = Path(__file__).parent.parent
 
-for app, infos in catalog.items():
+
+@cache
+def get_catalog() -> Dict[str, Dict[str, Any]]:
+    catalog_path = APPS_ROOT / "apps.toml"
+    return toml.load(catalog_path)
+
+
+@cache
+def get_categories() -> Dict[str, Any]:
+    categories_path = APPS_ROOT / "categories.toml"
+    return toml.load(categories_path)
+
+
+@cache
+def get_antifeatures() -> Dict[str, Any]:
+    antifeatures_path = APPS_ROOT / "antifeatures.toml"
+    return toml.load(antifeatures_path)
+
+
+def validate_schema() -> Generator[str, None, None]:
+    with open(APPS_ROOT / "schemas" / "apps.toml.schema.json", encoding="utf-8") as file:
+        apps_catalog_schema = json.load(file)
+    validator = jsonschema.Draft202012Validator(apps_catalog_schema)
+    for error in validator.iter_errors(get_catalog()):
+        yield f"at .{'.'.join(error.path)}: {error.message}"
+
+
+def check_app(app: str, infos: Dict[str, Any]) -> Generator[Tuple[str, bool], None, None]:
     if "state" not in infos:
-        errors.append(f"{app}: missing state info")
+        yield "state is missing", True
+        return
 
-catalog = {app: infos for app, infos in catalog.items() if infos.get('state') == "working"}
-categories = toml.load(open('categories.toml')).keys()
+    if infos["state"] != "working":
+        return
+
+    repo_name = infos.get("url", "").split("/")[-1]
+    if repo_name != f"{app}_ynh":
+        yield f"repo name should be {app}_ynh, not in {repo_name}", True
+
+    antifeatures = infos.get("antifeatures", [])
+    for antifeature in antifeatures:
+        if antifeature not in get_antifeatures():
+            yield f"unknown antifeature {antifeature}", True
+
+    category = infos.get("category")
+    if not category:
+        yield "category is missing", True
+    else:
+        if category not in get_categories():
+            yield f"unknown category {category}", True
+
+        subtags = infos.get("subtags", [])
+        for subtag in subtags:
+            if subtag not in get_categories().get(category, {}).get("subtags", []):
+                yield f"unknown subtag {category} / {subtag}", False
 
 
-def check_apps():
-
-    for app, infos in catalog.items():
-
-        repo_name = infos.get("url", "").split("/")[-1]
-        if repo_name != app + "_ynh":
-            yield f"{app}: repo name should be {app}_ynh, not in {repo_name}"
-
-        category = infos.get("category")
-        if not category:
-            yield f"{app}: missing category"
-        if category not in categories:
-            yield f"{app}: category {category} is not defined in categories.toml"
+def check_all_apps() -> Generator[Tuple[str, List[Tuple[str, bool]]], None, None]:
+    for app, info in get_catalog().items():
+        errors = list(check_app(app, info))
+        if errors:
+            yield app, errors
 
 
-errors = errors + list(check_apps())
+def main() -> None:
+    has_errors = False
 
-for error in errors:
-    print(error)
+    schema_errors = list(validate_schema())
+    if schema_errors:
+        has_errors = True
+        print("Error while validating catalog against schema:")
+    for error in schema_errors:
+        print(f"  - {error}")
+    if schema_errors:
+        print()
 
-if errors:
-    sys.exit(1)
+    for app, errors in check_all_apps():
+        print(f"{app}:")
+        for error, is_fatal in errors:
+            if is_fatal:
+                has_errors = True
+            level = "error" if is_fatal else "warning"
+            print(f"  - {level}: {error}")
+
+    if has_errors:
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()