diff --git a/packages/integration-tests/src/api/application.ts b/packages/integration-tests/src/api/application.ts
index 946706dc5..6d1476e84 100644
--- a/packages/integration-tests/src/api/application.ts
+++ b/packages/integration-tests/src/api/application.ts
@@ -7,12 +7,17 @@ import type {
 
 import { authedAdminApi } from './api.js';
 
-export const createApplication = async (name: string, type: ApplicationType) =>
+export const createApplication = async (
+  name: string,
+  type: ApplicationType,
+  rest?: Partial<CreateApplication>
+) =>
   authedAdminApi
     .post('applications', {
       json: {
         name,
         type,
+        ...rest,
       },
     })
     .json<Application>();
diff --git a/packages/integration-tests/src/tests/api/oidc/always-issue-refresh-token.test.ts b/packages/integration-tests/src/tests/api/oidc/always-issue-refresh-token.test.ts
new file mode 100644
index 000000000..d5a7cd82a
--- /dev/null
+++ b/packages/integration-tests/src/tests/api/oidc/always-issue-refresh-token.test.ts
@@ -0,0 +1,68 @@
+import { Prompt } from '@logto/js';
+import { ApplicationType, InteractionEvent } from '@logto/schemas';
+
+import { createApplication, deleteApplication, putInteraction } from '#src/api/index.js';
+import MockClient from '#src/client/index.js';
+import { demoAppRedirectUri } from '#src/constants.js';
+import { processSession } from '#src/helpers/client.js';
+import { createUserByAdmin } from '#src/helpers/index.js';
+import { enableAllPasswordSignInMethods } from '#src/helpers/sign-in-experience.js';
+import { generateUsername, generatePassword } from '#src/utils.js';
+
+describe('always issue Refresh Token config', () => {
+  const username = generateUsername();
+  const password = generatePassword();
+
+  const validateRefreshToken = async (appId: string, redirectUri: string, expectToken: boolean) => {
+    const client = new MockClient({
+      appId,
+      prompt: Prompt.Login,
+    });
+    await client.initSession(redirectUri);
+    await client.successSend(putInteraction, {
+      event: InteractionEvent.SignIn,
+      identifier: { username, password },
+    });
+    const { redirectTo } = await client.submitInteraction();
+    await processSession(client, redirectTo);
+
+    if (expectToken) {
+      expect(await client.getRefreshToken()).not.toBeNull();
+    } else {
+      expect(await client.getRefreshToken()).toBeNull();
+    }
+  };
+
+  beforeAll(async () => {
+    await createUserByAdmin(username, password);
+    await enableAllPasswordSignInMethods();
+  });
+
+  it('can sign in and fetch Refresh Token without `prompt=consent` when always issue Refresh Token is set', async () => {
+    const app = await createApplication('Integration test app', ApplicationType.SPA, {
+      oidcClientMetadata: { redirectUris: [demoAppRedirectUri], postLogoutRedirectUris: [] },
+      customClientMetadata: { alwaysIssueRefreshToken: true },
+    });
+    await validateRefreshToken(app.id, demoAppRedirectUri, true);
+    await deleteApplication(app.id);
+  });
+
+  it('cannot fetch Refresh Token if alwaysIssueRefreshToken is false and prompt is not consent', async () => {
+    const app = await createApplication('Integration test app', ApplicationType.SPA, {
+      oidcClientMetadata: { redirectUris: [demoAppRedirectUri], postLogoutRedirectUris: [] },
+      customClientMetadata: { alwaysIssueRefreshToken: false },
+    });
+    await validateRefreshToken(app.id, demoAppRedirectUri, false);
+    await deleteApplication(app.id);
+  });
+
+  it('cannot fetch Refresh Token for non-web apps', async () => {
+    const redirectUri = 'io.logto://callback';
+    const app = await createApplication('Integration test app', ApplicationType.Native, {
+      oidcClientMetadata: { redirectUris: [redirectUri], postLogoutRedirectUris: [] },
+      customClientMetadata: { alwaysIssueRefreshToken: true },
+    });
+    await validateRefreshToken(app.id, redirectUri, false);
+    await deleteApplication(app.id);
+  });
+});
diff --git a/packages/integration-tests/src/tests/api/oidc/content-type-json.test.ts b/packages/integration-tests/src/tests/api/oidc/content-type-json.test.ts
new file mode 100644
index 000000000..652a3e049
--- /dev/null
+++ b/packages/integration-tests/src/tests/api/oidc/content-type-json.test.ts
@@ -0,0 +1,54 @@
+import { demoAppApplicationId } from '@logto/schemas';
+import { trySafe } from '@silverhand/essentials';
+import { HTTPError, type Headers, got } from 'got';
+
+import { logtoUrl } from '#src/constants.js';
+
+describe('content-type: application/json compatibility', () => {
+  const api = got.extend({
+    prefixUrl: new URL('/oidc', logtoUrl),
+  });
+
+  const expectErrorMessageForPayload = async (
+    payload: Record<string, unknown>,
+    errorMessage: string,
+    headers?: Headers
+  ) => {
+    return trySafe(
+      api.post('token', {
+        headers,
+        json: payload,
+      }),
+      (error) => {
+        if (!(error instanceof HTTPError)) {
+          return fail('Error is not a HTTPError instance.');
+        }
+        expect(JSON.parse(String(error.response.body))).toHaveProperty(
+          'error_description',
+          errorMessage
+        );
+      }
+    );
+  };
+
+  it('recognizes `application/json` content-type in OIDC token endpoints', async () => {
+    await Promise.all([
+      expectErrorMessageForPayload(
+        { client_id: demoAppApplicationId },
+        "missing required parameter 'grant_type'"
+      ),
+      expectErrorMessageForPayload(
+        { client_id: demoAppApplicationId, grant_type: 'refresh_token' },
+        "missing required parameter 'refresh_token'"
+      ),
+    ]);
+  });
+
+  it('does not recognize `application/json1` content-type', async () => {
+    await expectErrorMessageForPayload(
+      { client_id: demoAppApplicationId },
+      'only application/x-www-form-urlencoded content-type bodies are supported on POST /token',
+      { 'content-type': 'application/json1' }
+    );
+  });
+});
diff --git a/packages/integration-tests/src/tests/api/get-access-token.test.ts b/packages/integration-tests/src/tests/api/oidc/get-access-token.test.ts
similarity index 93%
rename from packages/integration-tests/src/tests/api/get-access-token.test.ts
rename to packages/integration-tests/src/tests/api/oidc/get-access-token.test.ts
index b5cbde339..6acf8b53b 100644
--- a/packages/integration-tests/src/tests/api/get-access-token.test.ts
+++ b/packages/integration-tests/src/tests/api/oidc/get-access-token.test.ts
@@ -26,7 +26,7 @@ describe('get access token', () => {
     await enableAllPasswordSignInMethods();
   });
 
-  it('sign-in and getAccessToken with admin user', async () => {
+  it('can sign in and getAccessToken with admin user', async () => {
     const client = new MockClient({
       resources: [defaultManagementApi.resource.indicator],
       scopes: [defaultManagementApi.scope.name],
@@ -49,7 +49,7 @@ describe('get access token', () => {
     void expect(client.getAccessToken('api.foo.com')).rejects.toThrow();
   });
 
-  it('sign-in and getAccessToken with guest user', async () => {
+  it('can sign in and getAccessToken with guest user', async () => {
     const client = new MockClient({
       resources: [defaultManagementApi.resource.indicator],
       scopes: [defaultManagementApi.scope.name],
@@ -69,7 +69,7 @@ describe('get access token', () => {
     );
   });
 
-  it('sign-in and get multiple Access Token by the same Refresh Token within refreshTokenReuseInterval', async () => {
+  it('can sign in and get multiple Access Tokens by the same Refresh Token within refreshTokenReuseInterval', async () => {
     const client = new MockClient({ resources: [defaultManagementApi.resource.indicator] });
 
     await client.initSession();