Stainless
Generate robust, idiomatic SDKs, documentation, and MCP servers directly from your OpenAPI spec. Now part of Anthropic, we deliver best-in-class developer and agent experiences.
Editor's Verdict
Key Takeaways
- SDK Generation
- Docs Platform
- MCP Servers
- Developer Experience Focus
In-Depth Review: What is Stainless?
Stainless transforms your OpenAPI specification into best-in-class interfaces for developers and agents. We provide robust, idiomatic SDKs in TypeScript, Python, Go, Java, Ruby, C#, and PHP, documentation that automatically stays in sync with your API, and state-of-the-art MCP servers. By powering great agent experiences through great developer experiences, Stainless helps teams like Cloudflare, OpenAI, and Anthropic ship faster. As we join Anthropic, our mission continues: making software better for everyone.
Core Features
SDK Generation
Automatically generate robust, idiomatic SDKs for TypeScript, Python, Go, Java, Ruby, C#, and PHP from your OpenAPI spec.
Docs Platform
Documentation that stays in sync with your API, providing up-to-date references and guides.
MCP Servers
State-of-the-art Model Context Protocol servers for seamless integration with AI agents.
Developer Experience Focus
Built on great developer experience to deliver best-in-class interfaces for both developers and AI agents.
Pros and Cons
Pros
- OpenAPI-DrivenAll outputs (SDKs, docs, MCP) are derived from a single OpenAPI spec, ensuring consistency.
- Multi-Language SupportSupports six major programming languages out of the box.
- Agent-ReadyProvides MCP servers for AI agent compatibility, future-proofing your API.
- Idiomatic CodeSDKs follow language-specific best practices, reducing integration friction.
- Live DocumentationDocs automatically update when your API changes, reducing maintenance overhead.
Cons
- No Public PricingPricing information is not listed on the homepage, requiring contact with sales.
- Vendor Lock-inReliance on Stainless's platform for SDK generation may create dependency.
- Learning CurveTeams need to adapt to OpenAPI-first workflows.
- Limited CustomizationDerived outputs may not cover niche, non-standard API behaviors.
- Recent AcquisitionJoining Anthropic may lead to changes in product roadmap or support.
Use Cases & Recommended Professions
API Developer→ View Toolkit
Needs to quickly generate SDKs and docs for their API to improve developer experience.
DevRel Engineer→ View Toolkit
Wants to provide seamless integration tools for the developer community.
AI Agent Builder→ View Toolkit
Requires MCP servers to connect their agents with external APIs easily.
Platform Engineer→ View Toolkit
Responsible for maintaining API interfaces across multiple client libraries.
Product Manager (API)→ View Toolkit
Seeks to reduce time-to-market for API products by automating SDK and doc generation.
CTO→ View Toolkit
Evaluates tooling to enhance developer productivity and ensure API consistency.
Frequently Asked Questions
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ℹ️ Curation Disclosure: The overview and features of Stainless were synthesized using AI and fact-checked by our curation team to ensure accuracy.
