Develop a user interface that allows adding or removing toolinfo.json source URLs. UI to look similar as in https://meta.wikimedia.org/wiki/Toolhub/Wireframes#Add_your_tools.
A bit on how this feature will work (to be shown in an information box on the UI): Tool developers submit a URL to a toolinfo.json file consisting of information about their tools in a JSON file format. This file is accessible on the web and adheres to a version 1.2.0 schema. Tool developers are encouraged to host their files in a git repository so that other volunteers can submit pull requests to it. Toolhub crawls the tool records from it and add them to the catalog. In the future, Toolhub will allow its users to submit their tools directly via the interface.