OpenBullet is a powerful web testing suite widely used for automation, scraping, and penetration testing. However, even experienced users frequently run into configuration mismatches.
One of the most common errors is:
A Wordlist Type defines the format and structure of your input data. It determines how OpenBullet reads, validates, and splits your wordlist into variables that the config can use. Think of it as a data format specification that tells the software how to interpret each line of your wordlist. Different web forms, APIs, and scraping targets require different input structures.
If you want, paste (anonymized) 3–5 sample lines from your wordlist and a short excerpt of the config’s wordlist/type setting and I’ll tell you exactly what to change. OpenBullet is a powerful web testing suite widely
If you have already imported your wordlist, you might need to reimport it using a compatible type. Some users have found that changing an existing wordlist's type in the database does not properly update it; the software may still treat it as the old type. The recommended approach is to remove the wordlist and add it again, selecting the correct type from the start.
Common swaps: Change "Emails" to "Credentials" or "Default." Re-start the Runner. ⚙️ How to Fix It (The Permanent Way)
If the Wordlist Type is Credentials , OpenBullet automatically splits the line at the colon and assigns the first part to and the second to . It determines how OpenBullet reads, validates, and splits
If you are dealing with large files, consider using specialized wordlist management tools or basic find-and-replace features in text editors to adjust the delimiter (e.g., changing ; to : ) so it matches exactly what the config expects. How to Prevent This Error in the Future
If the config author specifies that the config requires a wordlist, you cannot use a UserPass wordlist.
Sometimes the error is not caused by the type selection but by an actual mismatch in data format. Ensure that each line of your wordlist follows the structure expected by the wordlist type you selected. For example, if your type uses a colon ( : ) as a separator, every line must contain exactly one colon. If you want, paste (anonymized) 3–5 sample lines
OpenBullet categorizes these formats using . The most common types include: Credentials: User:Pass or Email:Pass Default: Standard text lines Numeric: Numbers only URLs: Web addresses
The Environment.ini file defines the standard wordlist types available in your OpenBullet installation.
If you want the config to accept anything , you can often set it to . Save the config and try adding it to the Runner again. 4. Check the "Stack" or "Blocks"
If you know your wordlist format is correct but the configuration is too restrictive, you can force the config to accept your wordlist type. Go to the tab. Load the specific configuration causing the error. Navigate to Settings > General . Locate the Allowed Wordlist Types section.