Sourcebot
Sourcebot is a YC Fall 2025 (F25) company. Based in San Francisco, CA, USA. Team of 2.
About Sourcebot
Summary
Sourcebot builds a self-hosted, open-source code understanding platform for large engineering teams and AI coding agents. Developers use it to search millions of lines of code with regex, navigate complex repositories, and get answers grounded in their full codebase, replacing the manual process of hunting through code or pulling senior engineers away to explain it. AI agents connect to Sourcebot to retrieve company-wide codebase context, reducing hallucinations caused by limited local file access.
Business model
A paid tier positioned against Sourcegraph at less than half the price, with a self-hosted open-source base and a demo-gated enterprise offering.
Go-to-market
Sourcebot targets enterprise engineering teams at large technology companies, deploying on-premises via a single CLI command that gets it running before competing tools clear procurement approval, with sales supported by a book-a-demo flow for larger accounts.
From the Y Combinator listing
Helping humans and AI agents understand massive codebases
Sourcebot is an open source code understanding platform for massive codebases. We’re used by thousands of engineers in some of the largest companies in the world, including NVIDIA, Red Hat, Wikimedia, and Arista Networks. Understanding code, not writing it, is the primary bottleneck for large engineering teams. For developers, this means onboarding onto complex codebases faster. For AI agents, it means getting the necessary code context to minimize hallucinations and maximize cohesion within the wider codebase. Sourcebot solves this by giving developers and AI agents the ability to regex search across millions of lines of code instantly, as well as ask questions across thousands of repos using any flagship reasoning model. Being open source and on-prem, we can get deployed in enterprises within minutes before other tools even get approval. We met a decade ago at McGill University and have been building together full time for over 2 years. We’ve personally felt the pain of understanding large codebases while working at Microsoft, EA, Ubisoft, Google, and Meta.
Facts
- B2B / B2B -> Engineering, Product and Design
- San Francisco, CA, USA
- 2
- Active
- Early
Founders (2)
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