Stainless Software, Inc.
Stainless helps companies deliver world-class developer interfaces by automating the creation of type-safe, idiomatic SDKs and documentation for their APIs.
At a Glance
- AI and LLM providers
- B2B SaaS
- Fintech
- Developer Tools companies
AI Tools by Stainless Software, Inc.
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Stainless
SDK Generator from OpenAPI Spec
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Latest News
Anthropic Eyes $300M Stainless Acquisition To Strengthen AI Infrastructure
Stainless Software gets $25M in funding to bring AI-generated SDKs to developers
Towards the API platform we always wanted: why we raised our $25 million Series A
Stainless Wraps FY26 with 4x YoY Growth and 200%+ NRR
Products & Services
Automated generation of type-safe, idiomatic SDKs in languages including TypeScript, Python, Go, Java, Kotlin, PHP, Ruby, and C#.
Automated, Stripe-caliber API documentation platform that stays in sync with SDKs and API changes.
Support for Model Context Protocol (MCP) servers to enable AI agents to interact with APIs seamlessly.
Market Position
Positions itself as the 'gold standard' for automated SDKs, focusing on high-quality, Stripe-like developer experience compared to traditional generators like Swagger or newer competitors like Speakeasy and Fern.
Leadership
Founders
Alex Rattray
Previously at Stripe where he built the API documentation and developer experience systems. Education: Wharton School of the University of Pennsylvania.
Mark McGranaghan
Previously Engineering Manager at Stripe and worked on the Heroku toolchain. Expert in HTTP API design and visibility.
Executive Team
Alex Rattray
Founder & CEO
Former Stripe engineer focused on developer experience.
Mark McGranaghan
President & CTO
Former Engineering Manager at Stripe and Heroku.
Board of Directors
Founding Story
Founded by Alex Rattray after leaving Stripe, where he had built their renowned API documentation system. He noticed a massive demand from developers for 'Stripe-caliber' SDKs and started Stainless to automate their creation and maintenance.
Business Model
Revenue Model
SaaS Subscription based on number of SDKs and API complexity.
Pricing Tiers
For smaller projects or individual APIs.
For growing companies with multiple SDKs and complex APIs; includes max 200 methods.
Unlimited SDKs, dedicated support, and advanced features for large scale organizations.
Target Markets
- AI and LLM providers
- B2B SaaS
- Fintech
- Developer Tools companies
- API providers wanting to offer high-quality SDKs
- Scaling developer ecosystems without manual effort
- Maintaining multi-language client libraries
- Enabling AI agents to consume APIs effectively
- OpenAI
- Anthropic
- Cloudflare
- Zapier