diff --git a/MyINPulse-back/src/main/java/enseirb/myinpulse/utils/keycloak/KeycloakApi.java b/MyINPulse-back/src/main/java/enseirb/myinpulse/utils/keycloak/KeycloakApi.java
new file mode 100644
index 0000000..ff6dde2
--- /dev/null
+++ b/MyINPulse-back/src/main/java/enseirb/myinpulse/utils/keycloak/KeycloakApi.java
@@ -0,0 +1,135 @@
+package enseirb.myinpulse.utils.keycloak;
+
+import static org.springframework.http.MediaType.APPLICATION_JSON;
+
+import enseirb.myinpulse.exceptions.UserNotFoundException;
+import enseirb.myinpulse.utils.keycloak.datatypes.RoleRepresentation;
+import enseirb.myinpulse.utils.keycloak.datatypes.UserRepresentation;
+
+import org.springframework.web.client.RestClient;
+
+import javax.management.relation.RoleNotFoundException;
+
+public class KeycloakApi {
+
+    static final String keycloakUrl;
+    static final String realmName;
+
+    static {
+        if (System.getenv("VITE_KEYCLOAK_URL") == null) {
+            System.exit(-1);
+        }
+        keycloakUrl = System.getenv("VITE_KEYCLOAK_URL");
+    }
+
+    static {
+        if (System.getenv("VITE_KEYCLOAK_REALM") == null) {
+            System.exit(-1);
+        }
+        realmName = System.getenv("VITE_KEYCLOAK_REALM");
+    }
+
+    /**
+     * Uses Keycloak API to retrieve a role representation of a role by its name
+     *
+     * @param roleName name of the role
+     * @param bearer authorization header used by the client to authenticate to keycloak
+     */
+    public static RoleRepresentation getRoleRepresentationByName(String roleName, String bearer)
+            throws RoleNotFoundException {
+        RoleRepresentation[] response =
+                RestClient.builder()
+                        .baseUrl(keycloakUrl)
+                        .defaultHeader("Authorization", bearer)
+                        .build()
+                        .get()
+                        .uri("/admin/realms/{realmName}/roles/{roleName}", realmName, roleName)
+                        .retrieve()
+                        .body(RoleRepresentation[].class);
+
+        if (response == null || response.length == 0) {
+            throw new RoleNotFoundException("Role not found");
+        }
+        return response[0];
+    }
+
+    /**
+     * Use keycloak API to to retreive a userID via his name or email.
+     *
+     * @param username username or mail of the user
+     * @param bearer bearer of the user, allowing access to database
+     * @return the userid, as a String
+     * @throws UserNotFoundException
+     */
+    public static String getUserIdByName(String username, String bearer)
+            throws UserNotFoundException {
+        UserRepresentation[] response =
+                RestClient.builder()
+                        .baseUrl(keycloakUrl)
+                        .defaultHeader("Authorization", bearer)
+                        .build()
+                        .get()
+                        .uri(
+                                "/admin/realms/{realmName}/users?username={username}",
+                                realmName,
+                                username)
+                        .retrieve()
+                        .body(UserRepresentation[].class);
+
+        if (response == null || response.length == 0) {
+            throw new UserNotFoundException("User not found");
+        }
+        return response[0].id;
+    }
+
+    /**
+     * TODO: check for error
+     *
+     * <p>Set a keycloak role to a keycloak user.
+     *
+     * <p>Usual roles should be `MyINPulse-admin` and `MyINPulse-entrepreneur`
+     *
+     * @param username
+     * @param roleName
+     * @param bearer
+     * @throws RoleNotFoundException
+     * @throws UserNotFoundException
+     */
+    public static void setRoleToUser(String username, String roleName, String bearer)
+            throws RoleNotFoundException, UserNotFoundException {
+        RoleRepresentation roleRepresentation = getRoleRepresentationByName(roleName, bearer);
+        String userId = getUserIdByName(username, bearer);
+
+        RestClient.builder()
+                .baseUrl(keycloakUrl)
+                .defaultHeader("Authorization", bearer)
+                .build()
+                .post()
+                .uri(
+                        "/admin/realms/${realmName}/users/${userId}/role-mappings/realm",
+                        realmName,
+                        userId)
+                .body(roleRepresentation)
+                .contentType(APPLICATION_JSON)
+                .retrieve();
+    }
+
+    /**
+     * Delete a user from Keycloak database. TODO: check the bearer permission.
+     *
+     * @param username
+     * @param bearer
+     * @throws UserNotFoundException
+     */
+    public static void deleteUser(String username, String bearer) throws UserNotFoundException {
+        String userId = getUserIdByName(username, bearer);
+
+        RestClient.builder()
+                .baseUrl(keycloakUrl)
+                .defaultHeader("Authorization", bearer)
+                .build()
+                .delete()
+                .uri("/admin/realms/${realmName}/users/${userId}", realmName, userId)
+                .retrieve();
+    }
+}
diff --git a/front/MyINPulse-front/src/views/testComponent.vue b/front/MyINPulse-front/src/views/testComponent.vue
index 9ba1d5a..a73d879 100644
--- a/front/MyINPulse-front/src/views/testComponent.vue
+++ b/front/MyINPulse-front/src/views/testComponent.vue
@@ -1,6 +1,9 @@
 <script lang="ts" setup>
 import { store } from "../main.ts";
 import { callApi } from "@/services/api.ts";
+import { ref } from "vue";
+
+const CustomRequest = ref("");
 </script>
 
 <template>
@@ -55,6 +58,14 @@ import { callApi } from "@/services/api.ts";
                 <td>res</td>
                 <td id="3"></td>
             </tr>
+            <tr>
+                <td>
+                    <input v-model="CustomRequest" placeholder="edit me" />
+                </td>
+                <td>
+                    <button @click="callApi(CustomRequest)">call</button>
+                </td>
+            </tr>
         </tbody>
     </table>
 </template>