Generates fully-typed SDKs for REST APIs by leveraging OpenAPI specifications to automate client library creation in multiple programming languages. This streamlines API integration, reduces engineering overhead, and ensures consistent, high-quality SDKs with features like auto-pagination, retry logic, and seamless authentication.
Funding
$25M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.

Founders
Product
Problem
Developers expect APIs to come with type-safe client libraries in their preferred languages, but creating and maintaining these SDKs is time-consuming and resource-intensive. Manually building SDKs for multiple languages requires specialized expertise and ongoing effort to ensure consistency and quality.
Solution
Stainless automates the generation of fully-typed SDKs for REST APIs from OpenAPI specifications, enabling companies to deliver idiomatic client libraries in multiple programming languages. The platform streamlines API integration, reduces engineering overhead, and ensures consistent, high-quality SDKs. Stainless-generated SDKs include features like rich types for autocomplete and documentation, auto-pagination, auto-retry with backoff, and seamless authentication. By automating SDK generation, Stainless allows API providers to focus on building their core API while providing a superior developer experience.
Target Audience
The primary customers are API companies that want to provide high-quality, type-safe SDKs to their users without the overhead of manual development and maintenance.
Features
- SDK generation from OpenAPI specifications in Node/TypeScript, Python, Go, Java, Kotlin, Ruby, and Terraform.
- Rich types for autocomplete and documentation on hover.
- Auto-pagination for handling large datasets.
- Auto-retry with exponential backoff for handling transient errors.
- Seamless authentication handling.
- Customizable configuration for bespoke SDKs.
- GitHub Action for automated SDK regeneration and pull request creation.