Anthropic announced the acquisition of Stainless, a company specializing in SDKs and MCP server tooling, to expand agent connectivity capabilities. Founded in 2022, Stainless has been instrumental in generating every official Anthropic SDK since the early days of the API. Hundreds of companies rely on Stainless to create SDKs, CLIs, and MCP servers across multiple programming languages. Stainless transforms API specifications into SDKs for TypeScript, Python, Go, Java, and other languages, ensuring fast and reliable performance. "Stainless has shaped how developers experience the Claude API since the start, and it’s been great to work with them on that," said Katelyn Lesse, Head of Platform Engineering at Anthropic.
"Agents are only as useful as what they can connect to. We’re excited to bring the Stainless team into Anthropic to advance Claude’s ability to connect to data and tools." "I started Stainless because SDKs deserve as much care as the APIs they wrap. Anthropic was one of the first teams to bet on this with us," said Alex Rattray, Founder and CEO of Stainless. "We have been watching what developers have built on Claude over the last few years, which made bringing our teams together an easy decision.
The team gets to keep doing the work we love, on the platform where it matters most." Anthropic created MCP to enable agent connectivity. By combining the Stainless and Anthropic teams, the Claude Platform continues to push the frontier of developer experience and agent connectivity.
Source: anthropic
