Introduction
API interfaces built for developers and agents
Create beautiful docs, SDKs and secure MCP servers from your API. Scalar keeps every interface in sync as your API evolves.
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
The Modern Documentation Platform for Your API and Everything Else
Write documentation with Markdown and MDX, generate API references from OpenAPI and AsyncAPI, and keep everything up to date with two-way Git sync.
One Commit To Update All Your SDKs
Bring your OpenAPI document and get type-safe client libraries for TypeScript, Python, Golang, PHP, Java and Ruby with more languages coming soon.
The Postman Alternative Your Team Is Dreaming Of
Fully open-source & offline first API Client built on the OpenAPI standard, by us & our community.
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We've all experienced friction with out-of-date docs, no client SDKs in your favorite language, and no one to talk to about your struggles on-boarding.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 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.
CEO, Scalar
What are you waiting for?
We're committed to enabling developers and companies to practice the highest of API industry standards.
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