What is cpa-to-sub2api?

cpa-to-sub2api is a Windows batch file tool that takes multiple CPA JSON files and merges them into a single file that Sub2API can import. The README does not describe what CPA or Sub2API are in detail, but based on the context they appear to be services related to AI subscriptions or proxy configurations. The workflow is straightforward. You place all your CPA JSON files into a folder, put the CpaToSub2Api.bat file in the same folder, and double-click it. The tool reads every JSON file it finds in that folder and produces a single output file called sub2api.json. You then take that file and import it into Sub2API. No installation is required beyond downloading the single .bat file. The tool runs entirely on your local machine and makes no network requests: it does not upload tokens, credentials, or any other data to external servers. It only processes the JSON files in the same folder where it is placed. The README explicitly warns that the output sub2api.json file contains real OAuth credentials from the input files, so it should be kept private and not shared publicly or uploaded to GitHub. The README is short and sparse. It covers download, usage, and key caveats in a few lines, with no additional documentation about the underlying data format or the services it connects with. The tool is Windows-only.