{"slug": "i-asked-ai-to-review-my-code-it-found-bugs-i-didn-t-see", "title": "I Asked AI to Review My Code. It Found Bugs I Didn't See.", "summary": "A developer describes shifting their use of AI in software development from code generation to code review, prompting a model to act as a senior engineer that identifies bugs, edge cases, security concerns, and maintainability issues before rewriting anything. The developer reports the AI surfaced problems they had missed, but cautions that its suggestions are sometimes wrong or add unnecessary complexity, so the developer must still judge severity and trade-offs. They conclude AI should augment rather than replace human code review.", "body_md": "For a long time, I used AI in software development for one primary purpose:\n\nWrite the code.\n\nGive it a requirement.\n\nGet some Python.\n\nAsk for a function.\n\nGet a function.\n\nDescribe an API.\n\nGet an API.\n\nIt was fast. Sometimes impressively fast.\n\nBut recently, I've been using AI differently.\n\nInstead of asking:\n\n\"Can you write this for me?\"\n\nI've started asking:\n\n\"Can you review what I wrote?\"\n\nAnd the difference surprised me.\n\nAI wasn't just helping me write code faster.\n\nIt was helping me look at my own code differently.\n\n**The Problem With Asking AI to Write Everything**\n\nThere is an obvious benefit to AI-generated code.\n\nYou can move from an idea to a working prototype extremely quickly.\n\nBut there's a downside.\n\nWhen AI writes the code, I can become focused on whether the code works rather than whether the code is actually good.\n\nIt is very easy to accept:\n\nIt runs → Ship it.\n\nBut software engineering doesn't end when the program runs.\n\nWhat happens with unexpected input?\n\nWhat happens when the API fails?\n\nWhat happens when the database is unavailable?\n\nWhat happens when the data is empty?\n\nWhat happens when another developer has to maintain it six months from now?\n\nThose questions are much harder to answer by simply generating more code.\n\nThat's where code review becomes interesting.\n\n**So I Tried a Different Workflow**\n\nInstead of starting with AI, I started with myself.\n\nI wrote the code.\n\nThen I asked AI to review it.\n\nMy prompt was intentionally simple:\n\nReview this code as a senior software engineer. Don't rewrite it immediately. First identify potential bugs, edge cases, security concerns, maintainability problems, and unnecessary complexity. Explain why each issue matters.\n\nThat last sentence matters.\n\nI didn't want AI to immediately produce another 100 lines of code.\n\nI wanted it to **think about the code first**.\n\n**It Found Things I Hadn't Considered**\n\nSome findings were obvious once pointed out.\n\nOthers were not.\n\nFor example, a function might work perfectly for normal input but behave incorrectly when it receives:\n\nNone of these necessarily appear during a quick manual test.\n\nAnd that's the interesting part.\n\nA second reviewer doesn't need to discover something magical.\n\nSometimes it simply needs to ask:\n\n\"What happens if this assumption isn't true?\"\n\nThat question alone can expose a surprising number of problems.\n\n**But AI Didn't Always Get It Right**\n\nThis is where things get interesting.\n\nI don't treat AI's review as truth.\n\nSometimes it identifies a genuine issue.\n\nSometimes it identifies something that isn't actually a problem.\n\nAnd sometimes it suggests a change that would make the code more complicated without providing meaningful value.\n\nThis is exactly why I don't think AI replaces code review.\n\nIt changes the review process.\n\nThe developer still has to decide:\n\n**Is this actually a problem? How serious is it?\nIs the suggested solution appropriate?\nWhat trade-off does it introduce?**\n\nAI can point at something.\n\nIt cannot automatically decide whether changing it is worth the cost.\n\n**The Most Useful AI Review Isn't \"Fix My Code\"**\n\nI've noticed a subtle difference between two prompts.\n\nPrompt 1\n\nFix this code.\n\nPrompt 2\n\nReview this code and tell me what I should worry about.\n\nThe first asks AI to become the programmer.\n\nThe second asks AI to become the reviewer.\n\nI find the second approach much more interesting.\n\nBecause it keeps me involved in the reasoning.\n\nInstead of outsourcing the entire task, I'm using AI to **increase the number of perspectives looking at the problem**.\n\n**I Wouldn't Use AI as the Only Reviewer**\n\nThere are still things AI may not understand.\n\nIt might not know why a particular architectural decision was made.\n\nIt might not understand the business requirement.\n\nIt may not know which performance trade-off is acceptable.\n\nIt may flag code that looks unusual but is intentionally designed that way.\n\nAnd it can confidently make incorrect claims.\n\nSo I think of AI code review as another layer.\n\nSomething like:\n\nDeveloper writes code\n\n        ↓\n\nAutomated tests\n\n        ↓\n\nAI review\n\n        ↓\n\nHuman review\n\n        ↓\n\nProduction\n\n        ↓\n\nMonitoring\n\nEach layer answers a different question.\n\nTests ask:\n\nDoes the software behave correctly for the cases we've defined?\n\nAI review asks:\n\nWhat problems might we have overlooked?\n\nHuman review asks:\n\nDoes this implementation make sense in the real system?\n\nMonitoring asks:\n\nWhat happens after real users start using it?\n\nNo single layer is enough.\n\n**There's Another Benefit I Didn't Expect**\n\nAI reviewing my code has also changed how I write code.\n\nWhen I know I'll eventually ask an AI to review something, I become more deliberate about my implementation.\n\nI think more about:\n\nIn other words, the reviewer starts influencing the author.\n\nAnd that's a useful side effect.\n\nThe goal isn't simply to have AI catch mistakes.\n\nThe goal is to become better at **anticipating mistakes before they happen**.\n\n**This Applies Beyond AI-Generated Code**\n\nThere's a temptation to think AI code review is useful only when AI generated the original code.\n\nI don't think that's true.\n\nHuman-written code has bugs.\n\nHuman-written code has assumptions.\n\nHuman-written code becomes difficult to maintain.\n\nHuman-written code gets reviewed by people who are tired, rushed, or unfamiliar with the particular problem.\n\nA second perspective can be valuable regardless of who wrote the original code.\n\nAI is simply an unusually fast second perspective.\n\n**But Don't Confuse Review With Testing**\n\nThis distinction is important.\n\nAI can tell me:\n\n\"This function may fail when the API returns an empty response.\"\n\nThat's useful.\n\nBut a test can actually execute the scenario.\n\nFor example:\n\n`def test_empty_api_response():`\n\n    response = process_api_response([])\n\n    assert response == expected_result\n\nThe two approaches complement each other.\n\n**AI can help identify what to test.**\n\n**Tests can verify what actually happens.**\n\nThat's a much stronger workflow than relying on either one independently.\n\nI've written before about how developers routinely test traditional software while treating AI behavior differently. I think the same principle applies here:\n\n**AI should become part of an engineering discipline, not a replacement for it.**\n\n**The Bigger Lesson**\n\nThe most interesting change isn't that AI can review code.\n\nWe've known that AI can analyze code.\n\nThe bigger change is that we can now cheaply introduce additional reasoning into our development process.\n\nA developer working alone can effectively have another pair of eyes available within seconds.\n\nThat doesn't mean the second pair of eyes is always correct.\n\nIt means the cost of asking for another perspective has become extremely low.\n\nAnd when something is cheap enough, we can incorporate it into our workflow.\n\n**I'm Changing How I Use AI for Coding**\n\nI still use AI to generate code.\n\nIt would be silly not to take advantage of that capability.\n\nBut I don't want my relationship with AI to become:\n\nHuman thinks → AI writes.\n\nI'd rather have:\n\nHuman thinks → AI helps build → AI challenges → Human evaluates → Tests verify.\n\nThat is a much healthier development loop.\n\nBecause the objective isn't to remove the developer from the process.\n\nIt is to make the developer better at the process.\n\n**Maybe AI's Best Coding Feature Isn't Code Generation**\n\nWe spend an enormous amount of time talking about how quickly AI can write code.\n\nI'm starting to think another capability deserves more attention:\n\nAI can challenge the code we already wrote.\n\nIt can ask questions we didn't think to ask.\n\nIt can point toward assumptions we forgot we were making.\n\nIt can identify edge cases hiding behind apparently simple functions.\n\nIt can suggest tests.\n\nIt can act as a tireless second set of eyes.\n\nBut there is an important condition:\n\nWe still have to think.\n\nIf we blindly accept AI-generated code, we haven't improved the engineering process.\n\nWe've simply accelerated it.\n\nAnd accelerated bad decisions are still bad decisions.\n\nSo perhaps the better question isn't:\n\n\"How can AI write more of my code?\"\n\nMaybe it's:\n\n\"How can AI help me become a better engineer?\"\n\nThat's the question I'm increasingly interested in.\n\nHow are you using AI in your development workflow today, primarily as a code generator, debugger, reviewer, teacher, or something else?\n\nWant More:\n\nHead over to ReThynk AI to access our latest research, magazine articles, and developer resources. [Click Here](https://rethynkai.com/)", "url": "https://wpnews.pro/news/i-asked-ai-to-review-my-code-it-found-bugs-i-didn-t-see", "canonical_source": "https://dev.to/jaideepparashar/i-asked-ai-to-review-my-code-it-found-bugs-i-didnt-see-28aa", "published_at": "2026-09-18 10:36:28+00:00", "updated_at": "2026-09-18 10:53:00.120522+00:00", "lang": "en", "topics": ["ai-tools", "developer-tools", "ai-products", "artificial-intelligence"], "entities": [], "alternates": {"html": "https://wpnews.pro/news/i-asked-ai-to-review-my-code-it-found-bugs-i-didn-t-see", "markdown": "https://wpnews.pro/news/i-asked-ai-to-review-my-code-it-found-bugs-i-didn-t-see.md", "text": "https://wpnews.pro/news/i-asked-ai-to-review-my-code-it-found-bugs-i-didn-t-see.txt", "jsonld": "https://wpnews.pro/news/i-asked-ai-to-review-my-code-it-found-bugs-i-didn-t-see.jsonld"}}