About Stainless
Stainless is a developer-tools platform that generates best-in-class, idiomatic SDKs from OpenAPI specifications, enabling API companies to deliver typed client libraries in languages such as TypeScript, Python, Go, Java, Kotlin, Ruby, and Terraform. Its customers include OpenAI, Anthropic, Cloudflare, and Lithic, who use Stainless to accelerate developer integration and reduce manual SDK maintenance. The platform also generates MCP servers from OpenAPI specs to support AI-agent tool integration.
Company details
Funding
Total raised
$25M
Last stage
Series A
Investors
Founders
Alex Rattray
Previously architected Stripe's client library code generation system; founded Stainless in 2022 to make working with APIs effortless for developers.
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