{"id":92831,"title":"Mohi: Debugging assistant for AI agents","tagline":"Don’t know why your agent messed up? Neither do we. But Mohi will show you exactly where your agents went wrong - and why.","body":"Hey folks! 👋\n\nWe’re building Mohi, a debugging assistant for AI agents. If you've ever spent hours scrolling through 500+ LLM calls asking “what the hell happened?” — this is for you.\n\nhttps://youtu.be/UzQZlUdZ59s\n\n### The Problem\n\nAgents are complicated — tools, memory, web search, nested loops, and hallucinations. And when something breaks, it’s like untangling spaghetti. You’re stuck scrolling through flat logs, guessing which of the _35_ steps silently failed.\n\nIt's slow, brittle, and makes you second-guess your whole stack.\n\n### **The Fix**\n\nMohi makes debugging agents **_fast_**, and **_actually usable_**.\n\nJust tag key steps in your agent with our lightweight SDK (think: tool calls, memory access, context switches, decision logics), and we build a clean visual graph of what happened under the hood. Then we go a step further and show you:\n\n* where your agent last succeeded\n* where it went off the rails (hallucinated, failed tool, wrong branch)\n* and how to re-run broken steps with new inputs\n\nIt’s not just observability. It's a diagnosis.\n\n### **Who We Are**\n\nPreviously, Hao worked on AI and distributed systems observability at AWS, and Evan worked on automated testing at Google and AI evaluations at SecureBio. We met at MIT and worked on a bunch of projects together, eventually building agents ourselves and seeing firsthand how painful debugging can be — so we built Mohi to fix it.\n\n![uploaded image](/media/?type=post\u0026id=92831\u0026key=user_uploads/1675765/aa1f6344-8ce0-4ad5-a5ba-0e203412791a)\n\n### **Our Ask**\n\nIf you’re building complex agents — we’d love to chat!\n\n→[ https://trymohi.com/](https://trymohi.com/)\n\n→ [founders@trymohi.com](mailto:founders@trymohi.com)","slug":"O9H-mohi-debugging-assistant-for-ai-agents","created_at":"2026-02-07T00:21:30.007Z","updated_at":"2026-07-21T15:47:46.464Z","total_vote_count":4,"url":"https://www.ycombinator.com/launches/O9H-mohi-debugging-assistant-for-ai-agents","share_image_url":"https://www.ycombinator.com/media/?type=post\u0026id=92831\u0026key=user_uploads/1675765/aa1f6344-8ce0-4ad5-a5ba-0e203412791a","company":{"id":30702,"name":"TwentyTwo","slug":"twentytwo","url":"https://twentytwo.bio/","logo":"https://bookface-images.s3.amazonaws.com/small_logos/5be6b2304553a4bca9bfa1f2953ae02638a8d430.png","batch":"Summer 2025","industry":"Healthcare","tags":["Artificial Intelligence","Synthetic Biology","Biotech","Compliance","Security"],"search_path":"https://bookface.ycombinator.com/company/30702"}}