diff --git a/src/test/java/org/gcube/common/keycloak/TestKeycloakClient.java b/src/test/java/org/gcube/common/keycloak/TestKeycloakClient.java
index 8db4816..a3c20c0 100644
--- a/src/test/java/org/gcube/common/keycloak/TestKeycloakClient.java
+++ b/src/test/java/org/gcube/common/keycloak/TestKeycloakClient.java
@@ -3,6 +3,7 @@ package org.gcube.common.keycloak;
 import java.net.URL;
 
 import org.gcube.common.keycloak.model.ModelUtils;
+import org.gcube.common.keycloak.model.TokenIntrospectionResponse;
 import org.gcube.common.keycloak.model.TokenResponse;
 import org.gcube.common.scope.api.ScopeProvider;
 import org.junit.After;
@@ -19,10 +20,14 @@ public class TestKeycloakClient {
 
     protected static final Logger logger = LoggerFactory.getLogger(TestKeycloakClient.class);
 
-    private static final String DEV_ENDPOINT = "https://accounts.dev.d4science.org/auth/realms/d4science/protocol/openid-connect/token";
+    private static final String DEV_TOKEN_ENDPOINT = "https://accounts.dev.d4science.org/auth/realms/d4science/protocol/openid-connect/token";
+    private static final String DEV_INTROSPECTION_ENDPOINT = DEV_TOKEN_ENDPOINT + "/introspect";
+
     private static final String CLIENT_ID = "keycloak-client";
     private static final String CLIENT_SECRET = "38f76152-2b7c-418f-9b67-66f4cc2f401e";
     private static final String TEST_AUDIENCE = "conductor-server";
+    private static final String OLD_OIDC_ACCESS_TOKEN = "eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJSSklZNEpoNF9qdDdvNmREY0NlUDFfS1l0akcxVExXVW9oMkQ2Tzk1bFNBIn0.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.FQu4ox2HWeqeaY7nHYVGeJVpkJOcASfOb8tbOUeG-GB6sMjRB2S8PjLLaw63r_c42yxKszP04XdxGqIWqXTtoD9QCiUHTT5yJTkIpio4tMMGHth9Fbx-9dwk0yy_IFi1_OsCvZFmOQRdjMuUkj1lSqslCzAw-2E5q1Zt415-au5pEVJYNTFqIsG72ChJwh6eq1Dh1XBy8krb7YVPQyIwxO_awgAYO5hbsdvXYlRfCrnB38kk2V6-CQ-XYoL1m7xIB-gjhKCiFvDmmntQSRCZFgb0qi8eOmh9FdzPxZgx7yPJwAAj17dS4B_gz9FpZBVciNzpA6Lf4P2bqvoD9-R6ow";
+    private static final String OLD_UMA_ACCESS_TOKEN = "eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJSSklZNEpoNF9qdDdvNmREY0NlUDFfS1l0akcxVExXVW9oMkQ2Tzk1bFNBIn0.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.Hh62E56R-amHwoDPFQEylMvrvmNzWnC_4bDI7_iQYAPJ5YzCNH9d7zcdGaQ96kRmps_JRc2Giv_1W9kYorOhlXl-5QLDrSoqrqFxrNpEGG5r5jpNJbusbu4wNUKiCt_GMnM1UmztgXiQeuggNGkmeBIjotj0eubnmIbUV9ukHj3v7Z5PwNKKX3BCpsghd1u8lg6Nfqk_Oho4GXUfdaFY_AR3SNqzVI_9YLhND_a03MNNWlnfOvj8T4nDCKBZIs91tVyiu98d2TjnQt8PdlVwokMP3LA58m0Khy2cmUm1KF2k0zlzP8MxV9wTxNrpovMr-PnbtEPZ_IlVQIzHwjHfwQ";
 
     private static TokenResponse oidcTR = null;
     private static TokenResponse umaTR = null;
@@ -37,19 +42,42 @@ public class TestKeycloakClient {
     }
 
     @Test
-    public void test01EndpointDiscovery() throws Exception {
-        logger.info("*** [0.1] Start testing Keycloak endpoint discovery...");
+    public void test00TokenEndpointDiscovery() throws Exception {
+        logger.info("*** [0.0] Start testing Keycloak token endpoint discovery...");
         URL url = KeycloakClientFactory.newInstance().findTokenEndpointURL();
         Assert.assertNotNull(url);
         Assert.assertTrue(url.getProtocol().equals("https"));
-        Assert.assertEquals(new URL(DEV_ENDPOINT), url);
+        Assert.assertEquals(new URL(DEV_TOKEN_ENDPOINT), url);
+        logger.info("Discovered URL is: {}", url);
+    }
+
+    @Test
+    public void test01TokenEndpointComputeFromDiscovered() throws Exception {
+        logger.info("*** [0.1] Start testing Keycloak userinfo endpoint computed from discovered URL...");
+        URL url = KeycloakClientFactory.newInstance().computeIntrospectionEndpointURL();
+        Assert.assertNotNull(url);
+        Assert.assertTrue(url.getProtocol().equals("https"));
+        Assert.assertEquals(new URL(DEV_INTROSPECTION_ENDPOINT), url);
+        logger.info("Discovered URL is: {}", url);
+    }
+
+    @Test
+    public void test02TokenEndpointCompute() throws Exception {
+        logger.info("*** [0.2] Start testing Keycloak userinfo endpoint computed from provided URL...");
+        URL url = KeycloakClientFactory.newInstance().computeIntrospectionEndpointURL(new URL(DEV_TOKEN_ENDPOINT));
+        Assert.assertNotNull(url);
+        Assert.assertTrue(url.getProtocol().equals("https"));
+        Assert.assertEquals(new URL(DEV_INTROSPECTION_ENDPOINT), url);
         logger.info("Discovered URL is: {}", url);
     }
 
     @Test
     public void test11QueryOIDCTokenWithDiscoveryInCurrentScope() throws Exception {
-        logger.info("*** [1.1] Start testing query OIDC token from Keycloak with endpoint discovery and current scope...");
+        logger.info(
+                "*** [1.1] Start testing query OIDC token from Keycloak with endpoint discovery and current scope...");
         oidcTR = KeycloakClientFactory.newInstance().queryOIDCToken(CLIENT_ID, CLIENT_SECRET);
+        logger.info("*** [1.1] OIDC access token: {}", oidcTR.getAccessToken());
+        logger.info("*** [1.1] OIDC refresh token: {}", oidcTR.getRefreshToken());
         TestModels.checkTokenResponse(oidcTR);
         TestModels.checkAccessToken(ModelUtils.getAccessTokenFrom(oidcTR), "service-account-" + CLIENT_ID);
     }
@@ -57,7 +85,11 @@ public class TestKeycloakClient {
     @Test
     public void test12QueryOIDCToken() throws Exception {
         logger.info("*** [1.2] Start testing query OIDC token from Keycloak with URL...");
-        oidcTR = KeycloakClientFactory.newInstance().queryOIDCToken(new URL(DEV_ENDPOINT), CLIENT_ID, CLIENT_SECRET);
+        oidcTR = KeycloakClientFactory.newInstance().queryOIDCToken(new URL(DEV_TOKEN_ENDPOINT), CLIENT_ID,
+                CLIENT_SECRET);
+
+        logger.info("*** [1.2] OIDC access token: {}", oidcTR.getAccessToken());
+        logger.info("*** [1.2] OIDC refresh token: {}", oidcTR.getRefreshToken());
         TestModels.checkTokenResponse(oidcTR);
         TestModels.checkAccessToken(ModelUtils.getAccessTokenFrom(oidcTR), "service-account-" + CLIENT_ID);
     }
@@ -66,6 +98,8 @@ public class TestKeycloakClient {
     public void test13RefreshOIDCTokenWithDiscovery() throws Exception {
         logger.info("*** [1.3] Start testing refresh OIDC token from Keycloak with endpoint discovery...");
         TokenResponse refreshedTR = KeycloakClientFactory.newInstance().refreshToken(CLIENT_ID, CLIENT_SECRET, oidcTR);
+        logger.info("*** [1.3] Refreshed OIDC access token: {}", refreshedTR.getAccessToken());
+        logger.info("*** [1.3] Refreshed OIDC refresh token: {}", refreshedTR.getRefreshToken());
         TestModels.checkTokenResponse(refreshedTR);
         TestModels.checkAccessToken(ModelUtils.getAccessTokenFrom(refreshedTR), "service-account-" + CLIENT_ID);
         TestModels.checkRefreshToken(ModelUtils.getRefreshTokenFrom(refreshedTR));
@@ -77,6 +111,8 @@ public class TestKeycloakClient {
                 "*** [2.1] Start testing query UMA token from Keycloak with endpoint discovery and current scope as audience...");
 
         umaTR = KeycloakClientFactory.newInstance().queryUMAToken(CLIENT_ID, CLIENT_SECRET, null);
+        logger.info("*** [2.1] UMA access token: {}", umaTR.getAccessToken());
+        logger.info("*** [2.1] UMA refresh token: {}", umaTR.getRefreshToken());
         TestModels.checkTokenResponse(umaTR);
         TestModels.checkAccessToken(ModelUtils.getAccessTokenFrom(umaTR), "service-account-" + CLIENT_ID);
     }
@@ -85,6 +121,8 @@ public class TestKeycloakClient {
     public void test22QueryUMATokenWithDiscovery() throws Exception {
         logger.info("*** [2.2] Start testing query UMA token from Keycloak with endpoint discovery...");
         umaTR = KeycloakClientFactory.newInstance().queryUMAToken(CLIENT_ID, CLIENT_SECRET, TEST_AUDIENCE, null);
+        logger.info("*** [2.2] UMA access token: {}", umaTR.getAccessToken());
+        logger.info("*** [2.2] UMA refresh token: {}", umaTR.getRefreshToken());
         TestModels.checkTokenResponse(umaTR);
         TestModels.checkAccessToken(ModelUtils.getAccessTokenFrom(umaTR), "service-account-" + CLIENT_ID);
     }
@@ -95,6 +133,8 @@ public class TestKeycloakClient {
                 "*** [2.3] Start testing query UMA token from Keycloak with endpoint discovery and OIDC access token for authorization...");
 
         umaTR = KeycloakClientFactory.newInstance().queryUMAToken(oidcTR, TEST_AUDIENCE, null);
+        logger.info("*** [2.3] UMA access token: {}", umaTR.getAccessToken());
+        logger.info("*** [2.3] UMA refresh token: {}", umaTR.getRefreshToken());
         TestModels.checkTokenResponse(umaTR);
         TestModels.checkAccessToken(ModelUtils.getAccessTokenFrom(umaTR), "service-account-" + CLIENT_ID);
     }
@@ -102,9 +142,12 @@ public class TestKeycloakClient {
     @Test
     public void test24QueryUMAToken() throws Exception {
         logger.info("*** [2.4] Start testing query UMA token from Keycloak with URL...");
-        umaTR = KeycloakClientFactory.newInstance().queryUMAToken(new URL(DEV_ENDPOINT), CLIENT_ID, CLIENT_SECRET,
+        umaTR = KeycloakClientFactory.newInstance().queryUMAToken(new URL(DEV_TOKEN_ENDPOINT), CLIENT_ID, CLIENT_SECRET,
                 TEST_AUDIENCE, null);
 
+        logger.info("*** [2.4] UMA access token: {}", umaTR.getAccessToken());
+        logger.info("*** [2.4] UMA refresh token: {}", umaTR.getRefreshToken());
+
         TestModels.checkTokenResponse(umaTR);
         TestModels.checkAccessToken(ModelUtils.getAccessTokenFrom(umaTR), "service-account-" + CLIENT_ID);
     }
@@ -113,6 +156,9 @@ public class TestKeycloakClient {
     public void test25RefreshUMATokenWithDiscovery() throws Exception {
         logger.info("*** [2.5] Start testing refresh UMA token from Keycloak with endpoint discovery...");
         TokenResponse refreshedTR = KeycloakClientFactory.newInstance().refreshToken(CLIENT_ID, CLIENT_SECRET, umaTR);
+        logger.info("*** [2.5] Refreshed UMA access token: {}", refreshedTR.getAccessToken());
+        logger.info("*** [2.5] Refreshed UMA refresh token: {}", refreshedTR.getRefreshToken());
+
         TestModels.checkTokenResponse(refreshedTR);
         TestModels.checkAccessToken(ModelUtils.getAccessTokenFrom(refreshedTR), "service-account-" + CLIENT_ID);
         TestModels.checkRefreshToken(ModelUtils.getRefreshTokenFrom(refreshedTR));
@@ -124,4 +170,81 @@ public class TestKeycloakClient {
         KeycloakClientFactory.newInstance().refreshToken(umaTR.getRefreshToken());
     }
 
+    @Test
+    public void test301IntrospectOIDCAccessTokenWithDiscovery() throws Exception {
+        logger.info("*** [3.1] Start testing introspect OIDC access token with endpoint discovery...");
+        TokenIntrospectionResponse tir = KeycloakClientFactory.newInstance().introspectAccessToken(CLIENT_ID,
+                CLIENT_SECRET, oidcTR.getAccessToken());
+
+        TestModels.checkTokenIntrospectionResponse(tir);
+    }
+
+    @Test
+    public void test302IntrospectOIDCAccessToken() throws Exception {
+        logger.info("*** [3.2] Start testing introspect OIDC access token...");
+        TokenIntrospectionResponse tir = KeycloakClientFactory.newInstance().introspectAccessToken(
+                new URL(DEV_INTROSPECTION_ENDPOINT), CLIENT_ID, CLIENT_SECRET, oidcTR.getAccessToken());
+
+        TestModels.checkTokenIntrospectionResponse(tir);
+    }
+
+    @Test
+    public void test303IntrospectUMAAccessTokenWithDiscovery() throws Exception {
+        logger.info("*** [3.3] Start testing introspect UMA access token with endpoint discovery...");
+        TokenIntrospectionResponse tir = KeycloakClientFactory.newInstance().introspectAccessToken(CLIENT_ID,
+                CLIENT_SECRET, umaTR.getAccessToken());
+
+        TestModels.checkTokenIntrospectionResponse(tir);
+    }
+
+    @Test
+    public void test304IntrospectUMAAccessToken() throws Exception {
+        logger.info("*** [3.4] Start testing introspect UMA access token...");
+        TokenIntrospectionResponse tir = KeycloakClientFactory.newInstance().introspectAccessToken(
+                new URL(DEV_INTROSPECTION_ENDPOINT), CLIENT_ID, CLIENT_SECRET, umaTR.getAccessToken());
+
+        TestModels.checkTokenIntrospectionResponse(tir);
+    }
+
+    @Test
+    public void test305OIDCAccessTokenVerificationWithDiscovery() throws Exception {
+        logger.info("*** [3.5] Start OIDC access token verification with endpoint discovery...");
+        Assert.assertTrue(KeycloakClientFactory.newInstance().isAccessTokenVerified(CLIENT_ID,
+                CLIENT_SECRET, oidcTR.getAccessToken()));
+    }
+
+    @Test
+    public void test306OIDCAccessTokenVerification() throws Exception {
+        logger.info("*** [3.6] Start OIDC access token verification...");
+        Assert.assertTrue(KeycloakClientFactory.newInstance().isAccessTokenVerified(
+                new URL(DEV_INTROSPECTION_ENDPOINT), CLIENT_ID, CLIENT_SECRET, oidcTR.getAccessToken()));
+    }
+
+    @Test
+    public void test307OIDCAccessTokenNonVerification() throws Exception {
+        logger.info("*** [3.7] Start OIDC access token NON verification...");
+        Assert.assertFalse(KeycloakClientFactory.newInstance().isAccessTokenVerified(
+                new URL(DEV_INTROSPECTION_ENDPOINT), CLIENT_ID, CLIENT_SECRET, OLD_OIDC_ACCESS_TOKEN));
+    }
+
+    @Test
+    public void test308UMAAccessTokenVerificationWithDiscovery() throws Exception {
+        logger.info("*** [3.8] Start UMA access token verification with endpoint discovery...");
+        Assert.assertTrue(KeycloakClientFactory.newInstance().isAccessTokenVerified(CLIENT_ID,
+                CLIENT_SECRET, umaTR.getAccessToken()));
+    }
+
+    @Test
+    public void test309UMAAccessTokenVerification() throws Exception {
+        logger.info("*** [3.9] Start UMA access token verification...");
+        Assert.assertTrue(KeycloakClientFactory.newInstance().isAccessTokenVerified(
+                new URL(DEV_INTROSPECTION_ENDPOINT), CLIENT_ID, CLIENT_SECRET, umaTR.getAccessToken()));
+    }
+
+    @Test
+    public void test310UMAAccessTokenNonVerification() throws Exception {
+        logger.info("*** [3.10] Start UMA access token NON verification...");
+        Assert.assertFalse(KeycloakClientFactory.newInstance().isAccessTokenVerified(
+                new URL(DEV_INTROSPECTION_ENDPOINT), CLIENT_ID, CLIENT_SECRET, OLD_UMA_ACCESS_TOKEN));
+    }
 }
diff --git a/src/test/java/org/gcube/common/keycloak/TestModels.java b/src/test/java/org/gcube/common/keycloak/TestModels.java
index b1967ef..a94e94b 100644
--- a/src/test/java/org/gcube/common/keycloak/TestModels.java
+++ b/src/test/java/org/gcube/common/keycloak/TestModels.java
@@ -6,6 +6,7 @@ import org.gcube.com.fasterxml.jackson.databind.ObjectMapper;
 import org.gcube.common.keycloak.model.AccessToken;
 import org.gcube.common.keycloak.model.ModelUtils;
 import org.gcube.common.keycloak.model.RefreshToken;
+import org.gcube.common.keycloak.model.TokenIntrospectionResponse;
 import org.gcube.common.keycloak.model.TokenResponse;
 import org.junit.After;
 import org.junit.Assert;
@@ -106,4 +107,9 @@ public class TestModels {
         Assert.assertNotNull(rt.getAudience());
     }
 
+    public static void checkTokenIntrospectionResponse(TokenIntrospectionResponse tir) {
+        logger.debug("Token introspection response :\n{}", ModelUtils.toJSONString(tir, true));
+        Assert.assertTrue(tir.isActive());
+    }
+
 }