https://scalar.com/blog Engineering stories and news from the Scalar team Tue, 13 Oct 2026 00:00:00 GMT https://scalar.com/blog/posts/2026-10-13-openapi-with-nestjs https://scalar.com/blog/posts/2026-10-13-openapi-with-nestjs Tue, 13 Oct 2026 00:00:00 GMT Generate an accurate OpenAPI document from NestJS with @nestjs/swagger: the CLI plugin, response decorators, operation IDs, auth, mapped types and CI export. https://scalar.com/blog/posts/2026-10-08-openapi-with-fastapi https://scalar.com/blog/posts/2026-10-08-openapi-with-fastapi Thu, 08 Oct 2026 00:00:00 GMT How FastAPI generates OpenAPI 3.1 from type hints: metadata, error responses, stable operation IDs, security schemes, webhooks and exporting in CI. https://scalar.com/blog/posts/2026-10-06-openapi-aspnet-core-dotnet-9-10 https://scalar.com/blog/posts/2026-10-06-openapi-aspnet-core-dotnet-9-10 Tue, 06 Oct 2026 00:00:00 GMT Generate OpenAPI in ASP.NET Core with Microsoft.AspNetCore.OpenApi: .NET 9 vs 10 defaults, metadata, XML comments, transformers and build-time output. https://scalar.com/blog/posts/2026-10-01-migrating-off-stainless-week-one-checklist https://scalar.com/blog/posts/2026-10-01-migrating-off-stainless-week-one-checklist Thu, 01 Oct 2026 00:00:00 GMT A five-day checklist for teams with Stainless-generated SDKs: inventory, snapshot your public surface, audit credentials and build a compatibility harness. https://scalar.com/blog/posts/2026-09-29-release-notes-2026-09-26 https://scalar.com/blog/posts/2026-09-29-release-notes-2026-09-26 Tue, 29 Sep 2026 00:00:00 GMT OpenAPI 3.2 querystring parameters, custom methods, new examples, OAuth device flow, Copy as Markdown, client translations, fixes and upgrade notes. https://scalar.com/blog/posts/2026-08-16-stainless-wind-down https://scalar.com/blog/posts/2026-08-16-stainless-wind-down Sun, 16 Aug 2026 00:00:00 GMT A full account of the Stainless SDK generator wind-down: what changed, what your options are, and how stainless.yml carries across. https://scalar.com/blog/posts/2026-04-11-oss-pledge https://scalar.com/blog/posts/2026-04-11-oss-pledge Sat, 11 Apr 2026 00:00:00 GMT Scalar renews its Open Source Pledge for 2025, continuing to fund the open source maintainers we depend on. https://scalar.com/blog/posts/2026-03-25-scalar-mcp-oauth https://scalar.com/blog/posts/2026-03-25-scalar-mcp-oauth Wed, 25 Mar 2026 00:00:00 GMT How OAuth works with Scalar MCP servers: authenticate agents against your API with delegated user permissions. https://scalar.com/blog/posts/2026-03-17-agent-mcp https://scalar.com/blog/posts/2026-03-17-agent-mcp Tue, 17 Mar 2026 00:00:00 GMT Expose your OpenAPI document as an MCP server and use your API directly in Cursor or any MCP-compatible tool. https://scalar.com/blog/posts/2026-03-05-agent-scalar https://scalar.com/blog/posts/2026-03-05-agent-scalar Thu, 05 Mar 2026 00:00:00 GMT Introducing Scalar Agent: connect LLMs to your API using a fraction of the context window instead of pasting your whole OpenAPI document. https://scalar.com/blog/posts/2025-08-19-how-to-set-up-an-openapi-mock-server https://scalar.com/blog/posts/2025-08-19-how-to-set-up-an-openapi-mock-server Tue, 19 Aug 2025 00:00:00 GMT How to set up an OpenAPI mock server with the Scalar CLI in a few commands. https://scalar.com/blog/posts/2025-07-07-how-to-do-openapi-validation-and https://scalar.com/blog/posts/2025-07-07-how-to-do-openapi-validation-and Mon, 07 Jul 2025 00:00:00 GMT How to validate OpenAPI documents with the Scalar CLI, and why validation matters for your API workflow. https://scalar.com/blog/posts/2025-05-28-how-we-created-an-animated-responsive https://scalar.com/blog/posts/2025-05-28-how-we-created-an-animated-responsive Wed, 28 May 2025 00:00:00 GMT How we built an animated, responsive README for the Scalar GitHub repository with GitHub-flavored Markdown. https://scalar.com/blog/posts/2025-05-07-how-scalar-themes-work https://scalar.com/blog/posts/2025-05-07-how-scalar-themes-work Wed, 07 May 2025 00:00:00 GMT How Scalar themes work: the CSS variable system that lets you restyle an entire API reference. https://scalar.com/blog/posts/2025-04-28-how-cloudinarys-api-docs-create-a https://scalar.com/blog/posts/2025-04-28-how-cloudinarys-api-docs-create-a Mon, 28 Apr 2025 00:00:00 GMT What Cloudinary API docs get right, and what API-first companies can learn from their developer experience. https://scalar.com/blog/posts/2025-04-23-an-introduction-to-openapi-variables https://scalar.com/blog/posts/2025-04-23-an-introduction-to-openapi-variables Wed, 23 Apr 2025 00:00:00 GMT An introduction to OpenAPI variables: the different types and how to use them in your API documentation. https://scalar.com/blog/posts/2025-04-06-how-we-extended-the-openapi-specification https://scalar.com/blog/posts/2025-04-06-how-we-extended-the-openapi-specification Sun, 06 Apr 2025 00:00:00 GMT The extensions we added to the OpenAPI specification and how we process them under the hood. https://scalar.com/blog/posts/2025-03-26-a-guide-to-openapi-security-and-how https://scalar.com/blog/posts/2025-03-26-a-guide-to-openapi-security-and-how Wed, 26 Mar 2025 00:00:00 GMT A practical guide to defining authentication and authorization in OpenAPI, and how Scalar renders security schemes. https://scalar.com/blog/posts/2025-03-19-the-hidden-complexity-of-building https://scalar.com/blog/posts/2025-03-19-the-hidden-complexity-of-building Wed, 19 Mar 2025 00:00:00 GMT Why drag and drop is deceptively hard to build, and how we implemented it in the Scalar API Client. https://scalar.com/blog/posts/2025-03-12-how-we-sped-up-our-api-docs-25x https://scalar.com/blog/posts/2025-03-12-how-we-sped-up-our-api-docs-25x Wed, 12 Mar 2025 00:00:00 GMT The structural and rendering changes that made our API documentation 25x faster. https://scalar.com/blog/posts/2025-03-05-how-net-9-and-scalar-solve-the-problem https://scalar.com/blog/posts/2025-03-05-how-net-9-and-scalar-solve-the-problem Wed, 05 Mar 2025 00:00:00 GMT How .NET 9 OpenAPI document generation and Scalar work together to keep your APIs documented. https://scalar.com/blog/posts/2024-09-01-oss-pledge https://scalar.com/blog/posts/2024-09-01-oss-pledge Sun, 01 Sep 2024 00:00:00 GMT Scalar joins the Open Source Pledge, committing at least $2,000 per developer per year to open source maintainers.