X (Twitter) API Configuration Guide for Stackposts (2026 Updated)

Introduction

The X API (formerly Twitter API) allows Stackposts to:

Publish tweets
Upload images & videos
Read profile information
Access followers data
Send Direct Messages (if enabled)

This guide shows you how to correctly configure an X Developer App for Stackposts.

Step 1: Create an X Developer Account

Go to:
👉 https://developer.x.com
Login with your X account.
Open Developer Console
Navigate to:

Dashboard → Apps → Create App
Enter your App name and create the application.

Step 2: Generate API Keys

Click your App → Go to:

Keys & Tokens

Generate:

API Key (Consumer Key)
API Secret Key
Access Token
Access Token Secret
Bearer Token (optional but recommended)

⚠️ Important: Save these keys immediately. X will not show the full secret again.

Step 3: Configure User Authentication Settings

Inside your App:

Click:

User Authentication Settings → Set up

You will see the authentication configuration page.

3.1 App Permissions (Required)

Select:

✅ Read and write

If you need Direct Messages support:

✅ Read, write and Direct message

For Stackposts basic publishing:

👉 Read and write is required

3.2 Type of App (Required)

Select:

✅ Web App, Automated App or Bot

(Confidential client)

❌ Do NOT select Native App.

3.3 App Information

Fill the following fields exactly:

Callback URL / Redirect URL

https://yourdomain.com/app/x/profile

⚠️ Important:

Must match exactly the callback route used by Stackposts
Must use HTTPS
No extra slash differences

Website URL

https://yourdomain.com

Organization Name

Your Company Name

Organization URL

https://yourdomain.com

Terms of Service URL

https://yourdomain.com/terms-of-service

Privacy Policy URL

https://yourdomain.com/privacy-policy

⚠️ Required for production apps.

Click:

Save Changes

Step 4: Verify Access Level

Go to:

Dashboard → Project Overview

You should see:

✅ Elevated Access

If you only have Free or Basic access and posting fails, you may need to upgrade your X API plan.

Step 5: Add API Keys into Stackposts

Go to:

Settings → Social Networks → X (Twitter)

Fill in:

API Key
API Secret
Access Token
Access Token Secret
Bearer Token (optional)

Click Save.

Step 6: Test Connection

Go to User Dashboard.
Click Add Account.
Select X.
Authorize your account.
If redirected back successfully → Setup is correct.

Common Problems & Solutions

❌ Redirect URI Mismatch

Cause: Callback URL in X does not match Stackposts callback.

Solution: Ensure both are identical: