Scalar - The OpenAPI Company
Industry leading Developer Docs, SDKs, API Client & Registry that your APIs deserve
Take their word for it
“After years of helping enterprises implement API strategies at SmartBear, I can confidently say Scalar is what the industry has been waiting for.
The strict OpenAPI compliance, robust CLI/API registry, and seamless CI/CD integration solve the exact pain points I watched customers struggle with daily. This is the modern API platform developers deserve.”
Michael, Former Solutions Architect @ Smartbear
“One of my most recent favorites is a in-browser ad hoc testing UI called Scalar.
One of the things that I really love about Scalar, it's got this modern UI experience, and it provides built-in test generation code for a variety of targets, from cURL to HttpClient in C#.”
Captain Safia, Engineer @ Microsoft ASP.NET
“Scalar's ‘golden ticket’ is… Scalar!
They are (in my own words) building a product ecosystem for API design, docs, testing, and governance – with offerings at every price point.
They are open source. So I can get in on free features and stay with Scalar no matter how big my API needs blow up.”
Eron, Documentation Engineer @ Qrvey
Scalar Registry
The Centralized Repository for Your API Definitions
Upload, manage and version OpenAPI Documents, JSON Schemas and Spectral Rules in a single place. Can pull from your repository, works with any CI workflow.
Single Source of Truth Git Integration OpenAPI Documents JSON Schema Support Spectral Rules AsyncAPI (coming soon) Private or Public
Scalar API Client
The Postman Alternative Your Team Is Dreaming Of
Fully open-source & offline first API Client built on the OpenAPI standard, by us & our community.
Offline-first Sync your local API OpenAPI by Heart Collaborate with Others No Vendor Lock-In Linux, Windows, macOS
Scalar Docs
Write documentation with our WYSIWYG, pull Markdown and MDX files from your repository or generate API References from your OpenAPI documents. No matter how you work, your new documentation will always be up to date.
Markdown and MDX OpenAPI Documents Custom HTML/CSS/JS GitHub Sync Customize Everything Fine-grained Access
Scalar SDK Generation
Bring your OpenAPI document and get type-safe client libraries for TypeScript, Python, Golang, PHP, Java and Ruby with more languages coming soon.
OpenAPI-First Custom-code Code Samples OpenAPI Authentication Syncs with Docs File Streaming Support
Marc from Scalar here,
There's no better feeling than building and being enabled by the software you are integrating with.
We've all experienced friction with out-of-date docs, no client SDKs in your favorite language, and no one to talk to about your struggles on-boarding.
But we've also experienced those magical APIs that just work with everything you need right there. This drives our simple three tenants at Scalar: Accessibility, Open-Source, and API First. Making on-boarding easier and magical enables people to build, and being API first means your business can scale for the future (LLMs).
Why Open-Source? If done right, it’s transparent, builds industry standards (OpenAPI), accelerates innovation, and fosters collaboration. We love Open-Source and keep it core to our values.
We are fans of “show don't tell here” at Scalar: so try our Docs (this page), our SDKs for our API that includes our API Client, Agent Scalar to chat with APIs, and our GitHub for all our open-source products. As always, we love your feedback so drop us a line in our discord, email, or book a call with me to see how we can help.
Marc Laventure
CEO, Scalar
API Client
Minimal, powerful, fully open-source API Client built on open standards by us + our community.
SDKs
Bring your OpenAPI document and get type-safe client libraries for TypeScript, Python and more.