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What is Stainless?

Stainless is a developer infrastructure and API experience platform designed to help companies build exceptional developer and AI agent integrations through automated SDK generation, synchronized documentation systems, and MCP (Model Context Protocol) server creation. The platform transforms OpenAPI specifications into production-ready, idiomatic SDKs across multiple programming languages including TypeScript, Python, Go, Java, Ruby, C#, and PHP, enabling API providers to offer consistent, high-quality integration experiences without manually maintaining separate client libraries. Stainless focuses on both developer experience and emerging AI agent interoperability by automatically generating state-of-the-art MCP servers that allow AI systems and autonomous agents to interact with APIs through standardized, structured interfaces. The platform continuously synchronizes SDKs and API documentation with underlying API specifications, ensuring that code samples, endpoints, parameters, and workflows remain accurate as APIs evolve over time. Stainless helps engineering organizations reduce maintenance overhead, eliminate inconsistencies between APIs and documentation, accelerate SDK updates, and improve onboarding for developers integrating with their services. The generated SDKs are designed to follow language-specific conventions and best practices, providing developers with intuitive, production-grade integration libraries that simplify authentication, requests, error handling, streaming, and API interactions. By centralizing API specification management and automating downstream tooling generation, Stainless enables API companies to scale developer support more effectively while improving reliability and reducing operational complexity.

What is Fern?

Effortlessly create SDKs and documentation similar to Stripe's, customized specifically for your API. With type-safe SDKs available in popular programming languages, Fern simplifies the intricate process of generating and distributing client libraries, allowing your team to focus on developing the API itself. You can easily import your API definition in either OpenAPI format or Fern's simpler alternative. Select from an array of code generators, including TypeScript, Python, Java, Go, Ruby, C#, and Swift, to meet your specific requirements. Fern also manages semantic versioning and publishes packages to multiple registries such as npm, pypi, and maven, ensuring smooth integration into your projects. Additionally, you can benefit from visually appealing API documentation that reflects your brand's identity, providing a consistent user experience. This not only enhances the functionality of your API offerings but also improves their overall presentation, making them more attractive to potential users. Such comprehensive tools empower your development process and elevate your API's accessibility and usability.

Media

Media

Integrations Supported

GitHub
Go
Java
Kotlin
Model Context Protocol (MCP)
Node.js
Python
Ruby
Sayari
Terraform
TypeScript

Integrations Supported

GitHub
Go
Java
Kotlin
Model Context Protocol (MCP)
Node.js
Python
Ruby
Sayari
Terraform
TypeScript

API Availability

Has API

API Availability

Has API

Pricing Information

$250 per month
Free Trial Offered?
Free Version

Pricing Information

$250 per month
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Anthropic

Company Location

United States

Company Website

www.stainless.com

Company Facts

Organization Name

Fern

Date Founded

2022

Company Location

United States

Company Website

buildwithfern.com

Categories and Features

Categories and Features

API Management

API Design
API Lifecycle Management
Access Control
Analytics
Dashboard
Developer Portal
Testing Management
Threat Protection
Traffic Control
Version Control

Software Documentation

Access Roles / User Permissions
Automatic Documentation Generation
Collaboration Tools
Docs Web Hosting
Feedback Capture
Markdown Support
Multiple Formats Support
Multiple Versions Support
Version Control
WYSIWIG Editor
Webhooks
reStructured Text Support

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