ThreadFix allows you to create scan and application metadata as needed.
Create Metadata Keys
Within the Metadata Keys page (cog → Customize → Metadata Keys), you can create scan and application metadata keys.
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Click either of the Create…Keys buttons to create the desired key.
Example:
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Add Metadata
You can add the scan or application metadata within the Scan Details or Application Details page, respectively.
Scan Metadata
Navigate to to the Scan Details page for a desired scan, expand the Scan Details section, and click the Add Metadata button.
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Enter the desired key and click the Create Metadata button.
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Application Metadata
Navigate to an Application Details page, click on the top Action menu button, and select Edit / Delete from the menu.
Within the Metadata Values section at the bottom, enter the desired application metadata for the desired key(s).
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API
The above functions can also be performed via REST API.