Stainless

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Stainless provides best-in-class developer interfaces for APIs, generating robust SDKs, comprehensive documentation, and token-efficient MCP servers. It helps deliver great agent and developer experiences from an OpenAPI spec.

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At a glance

Pricing

Freemium · Paid

Free tier

Yes

API

Yes

Skill level

Technical

About

What is Stainless?

Stainless offers a comprehensive solution for API providers to deliver exceptional developer experiences. It automatically generates robust and idiomatic SDKs in multiple languages (TypeScript, Python, Go, Java, Kotlin, Ruby, Terraform, C#, PHP) from an OpenAPI specification, handling boilerplate tasks like HTTP requests, retries, and pagination. The platform also includes a new Docs Platform that creates live, interactive documentation sites combining API references, SDK docs, and narrative guides, built on Astro. Furthermore, Stainless provides an MCP Generator for state-of-the-art agentic enablement, empowering coding models to reliably generate code for your API and allowing autonomous agents to operate APIs more efficiently. Trusted by companies like OpenAI and Cloudflare, Stainless aims to set a new standard for API developer interfaces.

Best used for

Ideal for API providers who need to deliver robust SDKs, maintain up-to-date API documentation, and enable state-of-the-art agentic capabilities for their APIs. Especially valuable for teams looking to streamline their API development workflow and enhance the developer experience.

Common actions

generate SDKs

create API documentation

enable agentic APIs

integrate APIs

automate API development

Capabilities

Key features

SDK generator
API documentation platform
MCP server generator
OpenAPI spec integration
Multi-language support

Target Audience

developerproduct managerstartup founder

Integrations

Not yet documented

Pricing & Plans

Freemium · Paid

Free

FAQs

What programming languages do the generated SDKs support?

Stainless generates production-ready SDKs for a wide range of languages including TypeScript, Python, Go, Java, Kotlin, Ruby, Terraform, C#, and PHP. Early access is available for Rust, with Swift coming soon, ensuring broad compatibility for various development environments.

How does Stainless help with API documentation?

The Stainless Docs Platform transforms your OpenAPI spec into a live, interactive documentation site. It combines API reference, SDK usage examples, and narrative guides into a cohesive experience, built on Astro, and can be deployed to Cloudflare or your own cloud.

What is the MCP Generator and how does it benefit developers?

The MCP Generator creates state-of-the-art agentic enablement for your API. It empowers coding models like those in Cursor, Codex, or Claude Code to reliably generate code for your API, allowing autonomous agents to operate your API more efficiently and effectively.

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