What Stainless does
Stainless automatically generates SDKs and MCP servers from an OpenAPI specification. Its generated MCP servers use a two-tool, code-execution architecture instead of exposing one tool per API method.
Why teams reach for it: Teams that already maintain a traditional SDK use Stainless to add an MCP server without keeping a second codebase in sync by hand.
How Stainless compares
Fields the vendor doesn't document are left blank here rather than guessed — a blank means nothing verified, not a "no."
- Language
- TypeScript
- Official Sdk
- No
- Transports
- stdio, Streamable HTTP
- Builds Servers
- Yes
- Auth Helpers
- Built-in
- Generates From Openapi
- Yes
- Package Registry
- npm
What will you use to implement the protocol?
A framework or SDK gives developers pre-built code for creating an MCP server or client, so they don't have to implement the protocol from scratch.