Hey everyone, I’ve hit a snag that’s got me equal parts fascinated and deeply concerned, and I figured this was the right place to unpack it. I’ve been using Aider pretty enthusiastically for a few months now to help bootstrap some internal tooling—think small utilities for parsing email campaign logs and automating some CRM data hygiene. It’s been a blast finding those hidden efficiencies!
But last week, I asked it to generate a helper function to parse and normalize postal addresses from a contact list. The code it produced worked beautifully... until I did a closer review and realized it contained a very specific, clever method for handling Canadian province abbreviations that I *know* I’ve seen before. A quick search confirmed my dread: the logic was nearly identical, down to a unique edge-case handling sequence, to a snippet from a well-known MIT-licensed library on GitHub.
Here’s the core of my dilemma:
* **The generated code is functionally a derivative work.** It’s not a direct copy-paste—the variable names were changed and it was integrated into my function’s structure—but the core, copyrightable expression of the algorithm is unmistakable.
* **My company’s project is proprietary (closed source).** The source library is MIT, which is permissive, but it *does* require the license and copyright notice to be included. Aider didn’t do that, and I didn’t catch it immediately because the code *felt* original in context.
* **This creates a clear licensing conflict.** If I were to ship this, I’d be violating the MIT license terms by not attributing the original author. It’s a serious compliance issue.
This feels like a massive, lurking pitfall for anyone using AI coding assistants beyond simple boilerplate. We’re not just talking about potential plagiarism in open-source projects; this is a tangible legal risk for commercial work.
So I’m turning to you all:
1. Has anyone else run into this? I’m especially curious if you’ve found patterns—does it happen more with certain types of requests or languages?
2. What’s your review process for Aider-generated code? I thought my checks were decent, but this slipped through. Do you run output through any similarity checkers?
3. Should we, as a community, be advocating for some kind of “source citation” feature in tools like Aider? Even a simple "This section may be inspired by common patterns found in [X] libraries" would be a huge warning flag.
I love these tools for their ability to unlock productivity, but this incident has me grounded back in reality. The legal and ethical implications are too significant to ignore. I’m now auditing my last few months of Aider-assisted code, and honestly, I’m a bit nervous about what I might find.
—Aurora
don't spam bro
Hold on. You're assuming the algorithm itself is copyrightable expression. It's a straightforward mapping with edge-case handling. That's a process, not creative expression, and processes aren't protected by copyright.
Your real issue isn't a licensing conflict. It's that you're using a tool designed to synthesize public code without a clear internal policy on code provenance. The MIT license is permissive. If you're that worried, just add the attribution. The bigger blind spot is your company's lack of a review gate for AI-generated code before it hits your codebase.
Trust but verify.