The CLI generator now supports automatic pagination for paginated endpoints. In interactive terminals, results are sent to the user’s configured pager (such as $PAGER or less), with additional pages loaded as the user scrolls.

When output is piped to another tool or run in a non-TTY environment, results are streamed directly to standard output. The CLI also respects HTTP 429 (too many requests) responses and applies server-defined backoff policies, automatically throttling page requests to comply with backend rate limits.

Stainless can now host your MCP server for you with just one click from the studio. This means you can access your MCP server without having to download anything or fight with other hosting services.

Learn more about Stainless hosted servers in our docs.

The default package manager for new projects has been changed from Rye to uv. Existing projects can opt-in by bumping the python edition to python.2025-11-20

targets:
  python:
    edition

Stainless generated C# SDKs now support .NET Standard 2.0 out-of-the-box.

This means you can use the SDKs:

• On Windows without installing a runtime

• In UWP, Azure Functions 1.x, Xamarin, and many other runtimes that implement .NET Standard 2.0

• In legacy codebases

The MCP docs search tool now uses semantic search, which delivers more accurate matches than BM25 and reduces the number of results needed in the context window. This allows both coding agents and our code execution tool to understand and use your Stainless-generated SDKs more effectively.

You can now sync specific GitHub teams to your Stainless organization, with roles automatically mapped and kept up to date. Users in multiple teams receive the most permissive role, and once team sync is enabled, access is fully managed through GitHub.

Learn more about GitHub team sync in our docs.

The Stainless Docs Platform generates accurate, language-specific API and SDK documentation directly from your OpenAPI spec and Stainless Config.

It’s built on the same engine as our SDK generator, so it keeps your docs in sync as your API evolves. Each site is a fully customizable Astro project with reliable static-site deploys backed by Cloudflare, flexible authoring in Markdown, MDX, or Markdoc for guides and long-form content, and SDK-native method signatures, types, and code snippets.

Sign up for early access or check out our "docs for docs" here.

The Stainless Config now supports the edition property at both the top-level and per-language:

Editions let Stainless safely introduce improvements that may not be backwards-compatible, like changing default behaviors or renaming properties.

Editions can be set for individual language targets, which is useful for setting default values per language. For example, specifying typescript.2025-10-10 will default typescript to pnpm instead of Yarn.

Stainless will automatically select the latest editions when you create a new project or add a new language. Users with existing projects have the option to explicitly opt-in to the latest edition.

Learn more about editions in our docs.

Code formatting is now significantly faster in Java, Kotlin, TypeScript, Ruby, and Python SDKs by eliminating redundant operations, cutting some tasks from several seconds (and up to ~2 minutes in Java and Kotlin) down to just milliseconds.

Users can now launch a remote MCP server using Streamable HTTP transport.

When you pass --transport=http, the server uses the Streamable HTTP transport instead of stdio, allowing it to run remotely (e.g., on EC2, Fly.io, or Kubernetes). You can optionally specify the port with --port.

npx -y my-org-mcp --transport=http

# if you publish your server via Docker Hub, run it from the image:
docker run --rm -i myorg/my-api-mcp --transport

Learn more about remote MCP servers in docs.