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Stainless Open Source Program

by Stainless

Free Starter plan (normally $79/mo per generator) for qualifying non-commercial open-source projects, including SDK, documentation site, and MCP server generation from OpenAPI specs.

Apply NowView Stainless program details

Perks

SDK Generation

Generate TypeScript, Python, Go, Java, Kotlin, Ruby, and C# SDKs from your OpenAPI spec at no cost.

Documentation & MCP Servers

Auto-generated API documentation sites and MCP servers from your OpenAPI spec.

Starter Plan Features

Starter plan features including 50 endpoints, 300 preview builds per month, SSE streaming, and OAuth 2.0 auth support.

Eligibility

  • Project must be a non-commercial open-source (FOSS) project.
  • Project must have a public OpenAPI specification.

How to Apply

  1. Create a free Stainless account at stainless.com with your GitHub account.
  2. Email opensource@stainless.com with details about your project to get set up on the free Starter plan.

Tags

open-sourcedeveloper-toolsapi