{"id":111682,"title":"Mosaic — Shared memory for your team's agents","tagline":"Sync all your teams' AI agent sessions, in one place.","body":"**TL;DR**\n\nYour team is running dozens of agents and not one of them knows what the others did. [Mosaic](https://mosaic.inc/) syncs every AI session your team runs - Claude Code, Codex, Cursor and more - into one shared place that any agent can use. \\~2,000 installs and 37 orgs actively syncing.\\\n\\\nIt started as a real-time coding environment where multiple people and their agents work together. We [**went viral**](https://x.com/dorsa_rohani/status/2074963064231952832?s=20), defined the multiplayer AI category, and this direction has since taken off: YC added multiplayer AI to its Request for Startups, and [Anthropic is validating](https://x.com/ClaudeDevs/status/2085817074816070014) the same direction. Then we took the feature users found most valuable — centralized agent sessions — and built the product around it, continuing to lead the category ever since.\\\n\\\nIDE Demo: \u003chttps://youtu.be/SQywbNRe2xk\u003e\\\n\\\nAgent session sync demo: \u003chttps://youtu.be/QVzn-1vzpsY\u003e\n\n### **The problem**\n\nEvery coding agent session starts from zero. No memory of what happened last session, why a decision was made, or where the last person stopped. Agents run in isolation, so the only handoff between them is ad-hoc glue that breaks the moment a team adds more agents. Teammates constantly redo work they can't see.\n\n**Mosaic** keeps the record of every agent session — what was tried, what changed, and why — and carries it from one session and one teammate to the next. Any teammate or agent picks up exactly where someone else left off instead of starting over.\n\nAs a whole, we believe the way people are thinking about multi-agent systems is wrong, and our direction is being validated in real time. Most systems copy the human org chart — specialized agents passing messages — but that structure only exists because humans can't share memory; the real unit isn't the agent, it's one shared context store every agent reads from and writes to. [Read our memo here](https://mosaic.inc/blog/memo).\n\n![uploaded image](/media/?type=post\u0026id=111682\u0026key=user_uploads/2918134/f7913654-964e-4579-9f66-45d531e3b009)\n\n### Who we are\n\nWe're two engineers who built and deployed multi-agent systems and hit this exact wall every time.\n\n\\- **Dorsa:** worked on frontier ML @ NVIDIA, Tenstorrent and Deep Genomics. A Transformer implementation of hers has [2,400+ stars](https://github.com/DorsaRoh/Machine-Learning) on Github. 11-time hackathon winner and one of Major League Hacking’s youngest [Top 50 Hackers](https://top.mlh.com/2023/profiles/dorsa-rohani) out of 150,000+ hackers worldwide.\n\n\\- **Shubham:** founding engineer @ Beem building multi-agent systems that reason over human intent. A serial hacker at heart, he reverse-engineered 70 campus kiosks at UCSD and chained their compute into a working distributed cloud platform.\n\n### **Our ask**\n\n* **Run multiple coding agents on your team? Try Mosaic and tell us what breaks!**\n* **Intros** to engineering teams where every developer already runs their own agent.\n* Reach us directly: [contact@mosaic.inc](https://mosaic.inc/)\n\nWe built Mosaic because we kept facing this problem ourselves. If you're living it too, we'd love to hear from you.","slug":"T3K-mosaic-shared-memory-for-your-team-s-agents","created_at":"2026-08-24T14:30:00.125Z","updated_at":"2026-09-19T07:36:53.159Z","total_vote_count":8,"url":"https://www.ycombinator.com/launches/T3K-mosaic-shared-memory-for-your-team-s-agents","share_image_url":"https://www.ycombinator.com/media/?type=post\u0026id=111682\u0026key=user_uploads/2918134/f7913654-964e-4579-9f66-45d531e3b009","company":{"id":32201,"name":"Mosaic","slug":"mosaic-inc","url":"https://mosaic.inc","logo":"https://bookface-images.s3.amazonaws.com/small_logos/ccea1a14d9a796c8e8670b1aa85ebb489e030d7e.png","batch":"Summer 2026","industry":"B2B","tags":["Artificial Intelligence"],"search_path":"https://bookface.ycombinator.com/company/32201"}}