Anthropic Acquires Stainless

May 18, 2026

Anthropic has acquired Stainless, a startup providing SDK generation and MCP server tooling that helps developers and AI agents connect to APIs and external systems. The acquisition is intended to strengthen Claude’s agent connectivity capabilities and improve the developer experience across languages by bringing the Stainless team into Anthropic’s platform organization.

Buyers
Anthropic
Targets
Stainless
Location
New York, United States
Transaction Type
Buyout

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