# Spec Kit > A Ruby library for building and validating OpenAPI specifications with a focus on developer experience and testing. Spec Kit is a Ruby library developed by GitHub that provides tools for building, validating, and working with OpenAPI specifications. It streamlines the process of creating API documentation and ensures specifications remain accurate and up-to-date throughout the development lifecycle. The library focuses on improving developer experience when working with API specifications, offering utilities for validation, testing, and documentation generation. Spec Kit integrates seamlessly into Ruby-based development workflows and CI/CD pipelines. - **OpenAPI Specification Support** - Build and validate OpenAPI specs with comprehensive tooling designed for Ruby developers working on API documentation and design. - **Validation Utilities** - Automatically validate your API specifications against OpenAPI standards to catch errors and inconsistencies early in development. - **Testing Integration** - Integrate specification validation into your test suite to ensure API implementations match their documented specifications. - **Developer-Friendly API** - Work with a clean, intuitive Ruby interface that makes specification management straightforward and maintainable. - **Upgrade Support** - Comprehensive documentation for upgrading between versions, ensuring smooth transitions as the library evolves. To get started with Spec Kit, add it to your Ruby project's Gemfile and follow the documentation on GitHub. The library is open source and available under GitHub's standard open source licensing. Developers can contribute to the project, report issues, and access the full source code through the GitHub repository. ## Features - OpenAPI specification building - Specification validation - Testing integration - Ruby library - API documentation support - Version upgrade tooling ## Integrations Ruby, OpenAPI, GitHub Actions, CI/CD pipelines ## Platforms WEB, API, DEVELOPER_SDK ## Pricing Open Source ## Links - Website: https://github.com/github/spec-kit - Documentation: https://github.com/github/spec-kit/blob/main/docs/upgrade.md - Repository: https://github.com/github/spec-kit - EveryDev.ai: https://www.everydev.ai/tools/spec-kit