Anthropic Acquires Stainless
Anthropic has acquired Stainless, a company specializing in SDKs and MCP server tooling. This acquisition aims to enhance the capabilities of Anthropic's Claude platform by improving agent connectivity. Stainless has been instrumental in generating SDKs for Anthropic since its inception, and the merger is expected to further advance developer experience.
- ▪Anthropic is acquiring Stainless to extend the reach of its AI agents.
- ▪Stainless has powered the generation of every official Anthropic SDK since its early days.
- ▪The acquisition will enhance Claude's ability to connect to data and tools.
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AnnouncementsAnthropic acquires StainlessMay 18, 2026The frontier of AI is shifting from models that answer to agents that act—and agents are only as capable as the systems they can reach. Today, Anthropic is acquiring Stainless, a leader in SDKs and MCP server tooling, to extend that reach even further.Founded in 2022, Stainless has powered the generation of every official Anthropic SDK since the earliest days of our API. Hundreds of companies rely on Stainless to generate SDKs, CLIs, and MCP servers—the libraries, command-line tools, and connectors that let developers and agents use an API. Stainless turns an API spec into SDKs across TypeScript, Python, Go, Java, Kotlin, and more.
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