Anthropic announced the acquisition of Stainless, a company focused on tools that generate SDKs, CLIs and MCP servers to make it easier for developers and agents to connect APIs with apps and data.
Why should this matter to you even if you're not a developer? Because AI stops being just something that replies and starts being something that acts — and to act it needs to reach real systems. This acquisition is a step toward Claude, Anthropic's assistant, connecting more reliably to real-world data and tools.
What Stainless does and why Anthropic bought it
Stainless, founded in 2022, turns API specifications into SDKs for multiple languages: TypeScript, Python, Go, Java, Kotlin and more. It also generates command-line tools and MCP servers, which are the pieces that let developers and agents use an API in a simple, native way for each language.
Anthropic had already been using Stainless' work since the early days of its API. The acquisition aims to fold that know-how into Anthropic so Claude can link to more systems faster and more reliably.
