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.
Perks
Generate TypeScript, Python, Go, Java, Kotlin, Ruby, and C# SDKs from your OpenAPI spec at no cost.
Auto-generated API documentation sites and MCP servers from your OpenAPI spec.
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
- Create a free Stainless account at stainless.com with your GitHub account.
- Email opensource@stainless.com with details about your project to get set up on the free Starter plan.
Similar to Stainless Open Source Program
Free or discounted Algolia plans for qualifying open-source and non-profit projects, including 200,000 records and 200,000 search requests per month.
Free Atlassian Standard cloud products including Rovo, Jira, Confluence, Trello, Bitbucket, and more for qualifying open-source projects.
Cal.com sponsors open source projects with free access to their scheduling platform. Projects must display a 'Book us with Cal.com' banner in their README and website footer.