diff --git a/src/main/java/org/kohsuke/github/GHAppFromManifest.java b/src/main/java/org/kohsuke/github/GHAppFromManifest.java
new file mode 100644
index 0000000000..ed58423bbe
--- /dev/null
+++ b/src/main/java/org/kohsuke/github/GHAppFromManifest.java
@@ -0,0 +1,51 @@
+package org.kohsuke.github;
+
+/**
+ * A GitHub App with the additional attributes returned during its creation.
+ *
+ * @author Daniel Baur
+ * @see GitHub#createAppFromManifest(String)
+ */
+public class GHAppFromManifest extends GHApp {
+
+    private String clientId;
+    private String clientSecret;
+    private String webhookSecret;
+    private String pem;
+
+    /**
+     * Gets the client id
+     *
+     * @return the client id
+     */
+    public String getClientId() {
+        return clientId;
+    }
+
+    /**
+     * Gets the client secret
+     *
+     * @return the client secret
+     */
+    public String getClientSecret() {
+        return clientSecret;
+    }
+
+    /**
+     * Gets the webhook secret
+     *
+     * @return the webhook secret
+     */
+    public String getWebhookSecret() {
+        return webhookSecret;
+    }
+
+    /**
+     * Gets the pem
+     *
+     * @return the pem
+     */
+    public String getPem() {
+        return pem;
+    }
+}
diff --git a/src/main/java/org/kohsuke/github/GitHub.java b/src/main/java/org/kohsuke/github/GitHub.java
index c975f51fcc..ba33462b3a 100644
--- a/src/main/java/org/kohsuke/github/GitHub.java
+++ b/src/main/java/org/kohsuke/github/GitHub.java
@@ -1186,6 +1186,38 @@ public GHApp getApp() throws IOException {
         return createRequest().withPreview(MACHINE_MAN).withUrlPath("/app").fetch(GHApp.class);
     }
 
+    /**
+     * Returns the GitHub App identified by the given slug
+     *
+     * @param slug
+     *            the slug of the application
+     * @return the app
+     * @throws IOException
+     *             the IO exception
+     * @see <a href="https://docs.github.com/en/rest/apps/apps?apiVersion=2022-11-28#get-an-app">Get an app</a>
+     */
+    public GHApp getApp(@Nonnull String slug) throws IOException {
+        return createRequest().withUrlPath("/apps/" + slug).fetch(GHApp.class);
+    }
+
+    /**
+     * Creates a GitHub App from a manifest.
+     *
+     * @param code
+     *            temporary code returned during the manifest flow
+     * @return the app
+     * @throws IOException
+     *             the IO exception
+     * @see <a href=
+     *      "https://docs.github.com/en/rest/apps/apps?apiVersion=2022-11-28#create-a-github-app-from-a-manifest">Get an
+     *      app</a>
+     */
+    public GHAppFromManifest createAppFromManifest(@Nonnull String code) throws IOException {
+        return createRequest().method("POST")
+                .withUrlPath("/app-manifests/" + code + "/conversions")
+                .fetch(GHAppFromManifest.class);
+    }
+
     /**
      * Returns the GitHub App Installation associated with the authentication credentials used.
      * <p>
diff --git a/src/test/java/org/kohsuke/github/GHAppExtendedTest.java b/src/test/java/org/kohsuke/github/GHAppExtendedTest.java
new file mode 100644
index 0000000000..a419f0945a
--- /dev/null
+++ b/src/test/java/org/kohsuke/github/GHAppExtendedTest.java
@@ -0,0 +1,59 @@
+package org.kohsuke.github;
+
+import org.junit.Test;
+
+import java.io.IOException;
+
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.is;
+
+/**
+ * Tests for the GitHub App Api Test
+ *
+ * @author Daniel Baur
+ */
+public class GHAppExtendedTest extends AbstractGitHubWireMockTest {
+
+    private static final String APP_SLUG = "ghapi-test-app-4";
+
+    /**
+     * Gets the GitHub App by its slug.
+     *
+     * @throws IOException
+     *             An IOException has occurred.
+     */
+    @Test
+    public void getAppBySlugTest() throws IOException {
+        GHApp app = gitHub.getApp(APP_SLUG);
+
+        assertThat(app.getId(), is((long) 330762));
+        assertThat(app.getSlug(), equalTo(APP_SLUG));
+        assertThat(app.getName(), equalTo("GHApi Test app 4"));
+        assertThat(app.getExternalUrl(), equalTo("https://github.com/organizations/hub4j-test-org"));
+        assertThat(app.getHtmlUrl().toString(), equalTo("https://github.com/apps/ghapi-test-app-4"));
+        assertThat(app.getDescription(), equalTo("An app to test the GitHub getApp(slug) method."));
+    }
+
+    /**
+     * Tests App creation via the App Manifest Flow.
+     *
+     * The used code defined below was only valid for a short time, meaning that you can not replay the test against the
+     * GitHub API. Use the stored wire snapshot for executing those tests.
+     *
+     * @throws IOException
+     *             An IOException has occurred.
+     */
+    @Test
+    public void createAppByManifestFlowTest() throws IOException {
+        snapshotNotAllowed();
+        GHAppFromManifest appFromManifest = gitHub.createAppFromManifest("46fbe5453b245dee21b96753f80eace209a3cf01");
+
+        assertThat(appFromManifest.getClientId(), equalTo("Iv1.1c63d0b87c03d42e"));
+        assertThat(appFromManifest.getWebhookSecret(), equalTo("f4dafa9b05d8248d81f65f0e6cb108cb8bb76a0c"));
+        assertThat(appFromManifest.getClientSecret(), equalTo("f4b60603e85b3965492b393bca0809a914dcdf18"));
+        assertThat(appFromManifest.getPem(),
+                equalTo("-----BEGIN RSA PRIVATE KEY-----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\nL7zhUMfZLeDMpIbQ/3gyq0EUxxHIEJc2Mx42C9/OY/fkEuZPFSEL2A==\n-----END RSA PRIVATE KEY-----\n"));
+
+    }
+
+}
diff --git a/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/__files/app-manifests_46fbe5453b245dee21b96753f80eace209a3cf01_conversions-2.json b/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/__files/app-manifests_46fbe5453b245dee21b96753f80eace209a3cf01_conversions-2.json
new file mode 100644
index 0000000000..200d5ef050
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/__files/app-manifests_46fbe5453b245dee21b96753f80eace209a3cf01_conversions-2.json
@@ -0,0 +1,46 @@
+{
+  "id": 330788,
+  "slug": "ghapi-test-app-5",
+  "node_id": "A_kwHOAHMfo84ABQwk",
+  "owner": {
+    "login": "hub4j-test-org",
+    "id": 7544739,
+    "node_id": "MDEyOk9yZ2FuaXphdGlvbjc1NDQ3Mzk=",
+    "avatar_url": "https://avatars.githubusercontent.com/u/7544739?v=4",
+    "gravatar_id": "",
+    "url": "https://api.github.com/users/hub4j-test-org",
+    "html_url": "https://github.com/hub4j-test-org",
+    "followers_url": "https://api.github.com/users/hub4j-test-org/followers",
+    "following_url": "https://api.github.com/users/hub4j-test-org/following{/other_user}",
+    "gists_url": "https://api.github.com/users/hub4j-test-org/gists{/gist_id}",
+    "starred_url": "https://api.github.com/users/hub4j-test-org/starred{/owner}{/repo}",
+    "subscriptions_url": "https://api.github.com/users/hub4j-test-org/subscriptions",
+    "organizations_url": "https://api.github.com/users/hub4j-test-org/orgs",
+    "repos_url": "https://api.github.com/users/hub4j-test-org/repos",
+    "events_url": "https://api.github.com/users/hub4j-test-org/events{/privacy}",
+    "received_events_url": "https://api.github.com/users/hub4j-test-org/received_events",
+    "type": "Organization",
+    "site_admin": false
+  },
+  "name": "GHApi Test app 5",
+  "description": null,
+  "external_url": "https://www.example.com",
+  "html_url": "https://github.com/apps/ghapi-test-app-5",
+  "created_at": "2023-05-08T09:22:36Z",
+  "updated_at": "2023-05-08T09:22:36Z",
+  "client_id": "Iv1.1c63d0b87c03d42e",
+  "webhook_secret": "f4dafa9b05d8248d81f65f0e6cb108cb8bb76a0c",
+  "pem": "-----BEGIN RSA PRIVATE KEY-----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\nL7zhUMfZLeDMpIbQ/3gyq0EUxxHIEJc2Mx42C9/OY/fkEuZPFSEL2A==\n-----END RSA PRIVATE KEY-----\n",
+  "client_secret": "f4b60603e85b3965492b393bca0809a914dcdf18",
+  "permissions": {
+    "issues": "write",
+    "checks": "write",
+    "metadata": "read"
+  },
+  "events": [
+    "issues",
+    "issue_comment",
+    "check_suite",
+    "check_run"
+  ]
+}
\ No newline at end of file
diff --git a/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/__files/user-1.json b/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/__files/user-1.json
new file mode 100644
index 0000000000..53b8e52926
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/__files/user-1.json
@@ -0,0 +1,46 @@
+{
+  "login": "dbaur",
+  "id": 7251904,
+  "node_id": "MDQ6VXNlcjcyNTE5MDQ=",
+  "avatar_url": "https://avatars.githubusercontent.com/u/7251904?v=4",
+  "gravatar_id": "",
+  "url": "https://api.github.com/users/dbaur",
+  "html_url": "https://github.com/dbaur",
+  "followers_url": "https://api.github.com/users/dbaur/followers",
+  "following_url": "https://api.github.com/users/dbaur/following{/other_user}",
+  "gists_url": "https://api.github.com/users/dbaur/gists{/gist_id}",
+  "starred_url": "https://api.github.com/users/dbaur/starred{/owner}{/repo}",
+  "subscriptions_url": "https://api.github.com/users/dbaur/subscriptions",
+  "organizations_url": "https://api.github.com/users/dbaur/orgs",
+  "repos_url": "https://api.github.com/users/dbaur/repos",
+  "events_url": "https://api.github.com/users/dbaur/events{/privacy}",
+  "received_events_url": "https://api.github.com/users/dbaur/received_events",
+  "type": "User",
+  "site_admin": false,
+  "name": "Daniel Baur",
+  "company": null,
+  "blog": "",
+  "location": "Ulm",
+  "email": null,
+  "hireable": null,
+  "bio": null,
+  "twitter_username": null,
+  "public_repos": 48,
+  "public_gists": 0,
+  "followers": 7,
+  "following": 10,
+  "created_at": "2014-04-10T14:14:43Z",
+  "updated_at": "2023-04-28T11:26:17Z",
+  "private_gists": 3,
+  "total_private_repos": 13,
+  "owned_private_repos": 13,
+  "disk_usage": 104958,
+  "collaborators": 0,
+  "two_factor_authentication": true,
+  "plan": {
+    "name": "free",
+    "space": 976562499,
+    "collaborators": 0,
+    "private_repos": 10000
+  }
+}
\ No newline at end of file
diff --git a/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/mappings/app-manifests_46fbe5453b245dee21b96753f80eace209a3cf01_conversions-2.json b/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/mappings/app-manifests_46fbe5453b245dee21b96753f80eace209a3cf01_conversions-2.json
new file mode 100644
index 0000000000..73a2eb2ae6
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/mappings/app-manifests_46fbe5453b245dee21b96753f80eace209a3cf01_conversions-2.json
@@ -0,0 +1,57 @@
+{
+  "id": "14af1029-56b1-4d4b-9579-c2a30a4df4c4",
+  "name": "app-manifests_46fbe5453b245dee21b96753f80eace209a3cf01_conversions",
+  "request": {
+    "url": "/app-manifests/46fbe5453b245dee21b96753f80eace209a3cf01/conversions",
+    "method": "POST",
+    "headers": {
+      "Accept": {
+        "equalTo": "application/vnd.github.v3+json"
+      }
+    },
+    "bodyPatterns": [
+      {
+        "equalToJson": "{}",
+        "ignoreArrayOrder": true,
+        "ignoreExtraElements": false
+      }
+    ]
+  },
+  "response": {
+    "status": 201,
+    "bodyFileName": "app-manifests_46fbe5453b245dee21b96753f80eace209a3cf01_conversions-2.json",
+    "headers": {
+      "Server": "GitHub.com",
+      "Date": "Mon, 08 May 2023 09:22:37 GMT",
+      "Content-Type": "application/json; charset=utf-8",
+      "Cache-Control": "private, max-age=60, s-maxage=60",
+      "Vary": [
+        "Accept, Authorization, Cookie, X-GitHub-OTP",
+        "Accept-Encoding, Accept, X-Requested-With"
+      ],
+      "ETag": "\"11658fb48526e56c552184ab239fde425aef041a1d48fce2333682009b178a2c\"",
+      "X-OAuth-Scopes": "admin:gpg_key, admin:org, admin:org_hook, admin:public_key, admin:repo_hook, admin:ssh_signing_key, audit_log, codespace, delete:packages, delete_repo, gist, notifications, project, repo, user, workflow, write:discussion, write:packages",
+      "X-Accepted-OAuth-Scopes": "",
+      "github-authentication-token-expiration": "2023-06-07 08:27:57 UTC",
+      "X-GitHub-Media-Type": "github.v3; format=json",
+      "x-github-api-version-selected": "2022-11-28",
+      "X-RateLimit-Limit": "5000",
+      "X-RateLimit-Remaining": "4999",
+      "X-RateLimit-Reset": "1683541357",
+      "X-RateLimit-Used": "1",
+      "X-RateLimit-Resource": "integration_manifest",
+      "Access-Control-Expose-Headers": "ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Used, X-RateLimit-Resource, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, X-GitHub-SSO, X-GitHub-Request-Id, Deprecation, Sunset",
+      "Access-Control-Allow-Origin": "*",
+      "Strict-Transport-Security": "max-age=31536000; includeSubdomains; preload",
+      "X-Frame-Options": "deny",
+      "X-Content-Type-Options": "nosniff",
+      "X-XSS-Protection": "0",
+      "Referrer-Policy": "origin-when-cross-origin, strict-origin-when-cross-origin",
+      "Content-Security-Policy": "default-src 'none'",
+      "X-GitHub-Request-Id": "CC01:67BE:362DA52:36DD95C:6458BF5C"
+    }
+  },
+  "uuid": "14af1029-56b1-4d4b-9579-c2a30a4df4c4",
+  "persistent": true,
+  "insertionIndex": 2
+}
\ No newline at end of file
diff --git a/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/mappings/user-1.json b/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/mappings/user-1.json
new file mode 100644
index 0000000000..cdcebab26b
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHAppExtendedTest/wiremock/createAppByManifestFlowTest/mappings/user-1.json
@@ -0,0 +1,51 @@
+{
+  "id": "e173459b-205e-447b-9c70-70bddd564b12",
+  "name": "user",
+  "request": {
+    "url": "/user",
+    "method": "GET",
+    "headers": {
+      "Accept": {
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