# scalar/scalar

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern REST API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

Repository: https://github.com/scalar/scalar
Canonical: https://ross.abutalabs.com/products/scalar
Homepage: https://scalar.com
Language: TypeScript
License: MIT
License Family: permissive
Topics: api, docs, openapi, reference, swagger, vue, openapi3, api-client, http-client, rest-api
Last push: 2026-08-26T23:04:16+00:00

## Health v2 (maintenance only)
Score: 90/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 86, longevity 79
- inputs: {"age_days": 1113, "days_push": 7, "days_rel": 13, "gap_med": 0.0, "n_releases_24m": 123}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 16000, forks 924 (observed 2026-08-28T04:11:14.652300+00:00)

## What it is
Scalar is an open-source API platform centered on rendering beautiful interactive API references from OpenAPI/Swagger documents, with a built-in API testing client. The monorepo also includes an offline-first API client, mock server, CLI, SDK generator, and framework integrations for 35+ frameworks.

## Use cases
- render interactive API documentation from an OpenAPI spec
- test REST APIs with a modern Postman alternative
- generate SDKs from an OpenAPI document
- mock API responses from an OpenAPI file
- embed API reference docs in Express, Fastify, FastAPI, or Next.js apps
- upgrade legacy Swagger 2.0 documents to OpenAPI 3.1
- publish a developer portal with Markdown and MDX docs

## When to choose
- you want modern, self-hostable API docs from an OpenAPI document instead of dated Swagger UI
- you need an integrated docs + API client + SDK generation workflow driven by one spec
- you use a popular framework and want drop-in API reference integration

## When to avoid
- you need GraphQL-first documentation rather than OpenAPI/REST
- you require enterprise features like SSO/SAML or RBAC without a paid plan
- you only need a simple static docs site with no API component

## Facets
- artifact type: application
- maturity: active
- function: http-client, api-framework, api-documentation, documentation, mock-api, sdk
- domain: apis, web-development, developer-tools, documentation, backend
- platform: cross-platform, cli, self-hosted
- tags: openapi, swagger, api-reference, api-client, rest-api, vue, api-testing, developer-portal, mcp, web-server, nodejs, desktop

## Member repositories
- scalar/scalar (main) score 90

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:14.652300+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:05:17.447204+00:00, confidence not recorded.
  - readme: https://github.com/scalar/scalar (fetched 2026-08-28T04:11:14.652300+00:00, sha b2f21de9b286)
  - homepage: https://scalar.com (fetched 2026-08-29T08:03:36.645453+00:00, sha e8578549e806)
  - site_page: https://scalar.com/solutions/api-documentation-for-developer-tools-companies (fetched 2026-08-29T08:03:36.656643+00:00, sha 98187fc83d04)
  - site_page: https://scalar.com/products/docs (fetched 2026-08-29T08:03:36.651125+00:00, sha c297289858c2)
  - site_page: https://scalar.com/solutions/openapi-documentation (fetched 2026-08-29T08:03:36.654884+00:00, sha eb4150fb0d78)
  - site_page: https://dashboard.scalar.com/register (fetched 2026-08-29T08:03:36.648577+00:00, sha b04fe0c80053)
  - site_page: https://scalar.com/pricing (fetched 2026-08-29T08:03:36.653058+00:00, sha 13ab7cd84eeb)
  - site_page: https://scalar.com/resources/changelog (fetched 2026-08-29T08:03:36.658351+00:00, sha 2a9fc350d69c)
  - site_page: https://scalar.com/company (fetched 2026-08-29T08:03:36.659828+00:00, sha c46f52837b98)
  - site_page: https://scalar.com/products (fetched 2026-08-29T08:03:36.661303+00:00, sha 7c71bb5be62e)
- Data as of 2026-08-30T08:39:29.467469+00:00.