Anthropic acquires Stainless: what it means for Claude developers
For anyone building with Claude, this is one of those “boring on paper, important in practice” moves. Anthropic isn’t just buying a feature or a team; it’s pulling one of the most developer-facing pieces of its ecosystem closer to the core, which could matter a lot for SDKs, CLIs, and agent connectivity. Anthropic is acquiring Stainless, a company focused on SDKs and MCP server tooling. Stainless has powered the generation of every official Anthropic SDK since Anthropic’s earliest API days. The
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