Overview
Stainless is a developer platform that turns your OpenAPI specification into best-in-class developer interfaces. It automatically generates robust, idiomatic SDKs across a wide range of languages, keeps your API documentation in sync with your spec, and produces state-of-the-art MCP (Model Context Protocol) servers that give AI agents a clean, token-efficient way to interact with your API.
Developers love Stainless because it removes the heavy lifting of maintaining multiple SDKs and documentation by hand. Everything is derived from a single source of truth â your OpenAPI spec â so your interfaces stay consistent and current as your API evolves. With the recent announcement that Stainless is joining Anthropic, the platform is positioned to continue its mission of making software better for both human developers and AI agents.
Key Features
- Multi-language SDK Generation: Produces idiomatic SDKs for TypeScript, Python, Go, Java, Kotlin, Ruby, Terraform, C#, and PHP, all generated from your OpenAPI spec.
- Auto-synced Documentation: Generates API documentation that automatically keeps up with changes to your API, eliminating manual doc maintenance.
- Token-efficient MCP Servers: Builds state-of-the-art MCP servers that give AI agents a clean, efficient interface to your API.
- Single Source of Truth: All artifacts are derived from your OpenAPI specification, ensuring consistency across SDKs, docs, and agent interfaces.
Use Cases
- API Platform Teams: A B2B SaaS company with a public API uses Stainless to ship and maintain SDKs in 9 languages plus docs without a dedicated SDK team.
- AI/Agent Builders: A developer building AI agents uses Stainless-generated MCP servers to give their agents reliable, token-efficient access to third-party APIs.
- DevRel & Documentation Teams: A platform team keeps its API reference documentation perfectly in sync with code changes, reducing stale-docs complaints from customers.
