Blacksmith raised a $45 million Series B led by Peak XV at a $550 million valuation, nearly ten times its Series A mark, TechCrunch reported. GV and Y Combinator joined again, lifting total funding to about $58.5 million. The CI cloud helps teams build and test software before production and ships Codesmith, an agent that can fix failed checks as AI coding tools flood pipelines. Customers grew from roughly 700 to more than 5,000. That matters if validation becomes the bottleneck after generation gets cheap. The caveat is that GitHub Actions, cloud giants, and coding agents claim adjacent ground.