diff --git a/README.md b/README.md
index 5bc04e14..f59be0e5 100644
--- a/README.md
+++ b/README.md
@@ -52,6 +52,24 @@ Install using github:
 `pip install git+https://github.com/italia/eudi-wallet-it-python`
 
 
+## Usage
+
+TBD. Here a section that points to the documentation of each single package and some common example about their usage for some specific tasks.
+
+| Name | Description |
+| :--- | --- |
+| __jwk__ | link to the API documentation [](). | 
+| __jwt__ | link to the API documentation [](). | 
+| __tools.qrcode__ | QRCodes creation. | 
+| __oauth2.dpop__ | link to the API documentation [](). |
+| __federation__ | link to the API documentation [](). |
+| __trust__ | link to the API documentation [](). |
+| __satosa.backend__ | link to the API documentation [](). |
+| __openid4vp__ | link to the API documentation [](). |
+| __presentation_exchange__ | link to the API documentation [](). |
+| __sd_jwt__ | link to the API documentation [](). |
+
+
 ## Example project
 
 The example project is a docker-compose that runs a demo composed by the following component:
@@ -61,6 +79,7 @@ The example project is a docker-compose that runs a demo composed by the followi
 
 Please read [this README](example/README.md) to get a fully working demo setup.
 
+
 ## SatoSa configuration
 
 [SaToSa](https://github.com/IdentityPython/SATOSA) is a general purpose IAM 
@@ -70,9 +89,6 @@ backend to enable the OpenID4VP protocol.
 
 Please read  [README-SATOSA.md](README-SATOSA.md) for details.
 
-## API
-
-TBD. Here a section that points to the documentation of each single package and some common example about their usage for some specific tasks.
 
 ## Contribute
 
diff --git a/pyeudiw/federation/statements.py b/pyeudiw/federation/statements.py
index 59ef3d1d..45a2fb02 100644
--- a/pyeudiw/federation/statements.py
+++ b/pyeudiw/federation/statements.py
@@ -378,7 +378,7 @@ def validate_descendant_statement(self, jwt: str) -> bool:
         if header.get("kid") not in self.kids:
             raise UnknownKid(
                 f"{self.header.get('kid')} not found in {self.jwks}")
-        
+
         # verify signature
         jwsh = JWSHelper(self.jwks[self.kids.index(header["kid"])])
         payload = jwsh.verify(jwt)
diff --git a/pyeudiw/tools/utils.py b/pyeudiw/tools/utils.py
index e68d636e..fcd9d1a2 100644
--- a/pyeudiw/tools/utils.py
+++ b/pyeudiw/tools/utils.py
@@ -62,4 +62,3 @@ def get_jwks(httpc_params: dict, metadata: dict, federation_jwks: list = []) ->
 
 def random_token(n=254):
     return token_hex(n)
-