Scalar

Scalar is an open-source API platform built around the OpenAPI standard. It provides API documentation (API References), an offline-first API client, a centralized API registry for managing OpenAPI documents, JSON schemas and Spectral rules, and automated SDK generation for TypeScript, Python, Go, PHP, Java, and Ruby. Used by teams at SmartBear, Microsoft ASP.NET, and 30+ framework ecosystems including Express, FastAPI, NestJS, and Spring Boot. The platform has 14.9k GitHub stars and is MIT licensed. Scalar is backed by a strong open-source community and positions itself as the modern, open alternative to Swagger UI and Postman.

Scalar publishes 24 APIs on the APIs.io network, including access-groups API, analytics API, api-docs API, and 21 more. Tagged areas include API Client, API Documentation, API References, Code Generation, and Developer Tools.

The Scalar catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Scalar’s developer surface includes authentication, documentation, pricing, GitHub presence, engineering blog, changelog, support, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

51.6/100 developing ▼ -5.1 Agent 39/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemiumSelf serve⚡ Free to try

30 APIs

API ClientAPI DocumentationAPI ReferencesCode GenerationDeveloper ToolsOpenAPIRegistrySDKsSwagger

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 51.6/100 · developing

Contract Quality 13.3 / 25

Developer Ergonomics 5.2 / 20

Commercial Clarity 11.6 / 20

Operational Transparency 6.8 / 13

Governance 8.3 / 12

Discoverability 6.5 / 10

Agent readiness — 39/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/scalar: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 30

Individual APIs this provider publishes, each with its own machine-readable definition.

Rate Limits 1

Documented rate limits and quota policies.

Scalar Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Examples 3

Example request and response payloads for these APIs.

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

JSONSchema

JSONSchema

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

SpectralRules

JSONStructure

JSONLDContext

Vocabulary

Build 2

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Examples

Examples

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

Discord

Discord

ChangeLog

ChangeLog

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Dashboard

Dashboard

Source (apis.yml)

aid: scalar
name: Scalar
description: Scalar is an open-source API platform built around the OpenAPI standard. It provides API documentation (API References),
  an offline-first API client, a centralized API registry for managing OpenAPI documents, JSON schemas and Spectral rules,
  and automated SDK generation for TypeScript, Python, Go, PHP, Java, and Ruby. Used by teams at SmartBear, Microsoft ASP.NET,
  and 30+ framework ecosystems including Express, FastAPI, NestJS, and Spring Boot. The platform has 14.9k GitHub stars and
  is MIT licensed. Scalar is backed by a strong open-source community and positions itself as the modern, open alternative
  to Swagger UI and Postman.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/scalar.png
url: https://raw.githubusercontent.com/api-evangelist/scalar/refs/heads/main/apis.yml
tags:
- API Client
- API Documentation
- API References
- Code Generation
- Developer Tools
- OpenAPI
- Registry
- SDKs
- Swagger
type: Index
access: 3rd-Party
position: Consumer
created: '2025-01-08'
modified: '2026-05-02'
specificationVersion: '0.19'
apis:
- aid: scalar:scalar-api-references
  name: Scalar API References
  description: Scalar API References renders modern, interactive API documentation from OpenAPI and Swagger specifications.
    Features include multiple themes, custom styling, dark mode, mobile responsiveness, built-in search, and an interactive
    request panel for testing APIs directly in the docs. Supports OpenAPI 3.0 and 3.1, $ref resolution, allOf/oneOf/anyOf,
    and authentication schemes. Framework integrations include React, Vue, FastAPI, ASP.NET Core, Spring Boot, NestJS, Express,
    and 30+ others.
  tags:
  - Documentation
  - Interactive
  - OpenAPI
  - References
  - Swagger
  humanURL: https://scalar.com/products/api-references/getting-started
  properties:
  - type: GettingStarted
    url: https://scalar.com/products/api-references/getting-started
  - type: Documentation
    url: https://guides.scalar.com/scalar/scalar-api-references/getting-started
  - type: GitHub
    url: https://github.com/scalar/scalar
  - type: NPM
    url: https://www.npmjs.com/package/@scalar/api-reference
- aid: scalar:scalar-api-client
  name: Scalar API Client
  description: Scalar API Client is a fully open-source, offline-first REST API client built on the OpenAPI standard. Supports
    collections, environments, pre/post-response scripting, test results, and collection runners. Available for Windows, macOS,
    and Linux as a desktop application and as a browser-based version at client.scalar.com. Imports OpenAPI files to auto-generate
    request collections with authentication pre-configured.
  tags:
  - API Client
  - Collections
  - OpenAPI
  - REST
  - Testing
  humanURL: https://scalar.com/products/api-client/getting-started
  properties:
  - type: GettingStarted
    url: https://scalar.com/products/api-client/getting-started
  - type: Application
    url: https://client.scalar.com/
  - type: Download
    url: https://scalar.com/download
  - type: GitHub
    url: https://github.com/scalar/scalar
- aid: scalar:scalar-docs
  name: Scalar Docs
  description: Scalar Docs enables teams to create and publish developer documentation that stays in sync with their API and
    code. Supports writing with a WYSIWYG editor, pulling Markdown and MDX files from repositories, and generating API references
    from OpenAPI documents with Git Sync and CI/CD integration. Custom domains, team collaboration, and versioning are available
    on paid plans.
  tags:
  - Developer Portal
  - Documentation
  - Git Sync
  - Markdown
  - MDX
  humanURL: https://scalar.com/products/docs/getting-started
  properties:
  - type: GettingStarted
    url: https://scalar.com/products/docs/getting-started
  - type: Portal
    url: https://docs.scalar.com/
  - type: Documentation
    url: https://guides.scalar.com/scalar/scalar-docs/getting-started
  - type: GitHubActions
    url: https://scalar.com/products/docs/github-actions
- aid: scalar:scalar-registry
  name: Scalar Registry
  description: 'Scalar Registry provides centralized management and versioning of OpenAPI Documents, JSON Schemas, and Spectral
    Rules with deep Git integration. Serves as the single source of truth for API definitions across teams. Supports both
    private and public registries with CI/CD workflows via CLI and GitHub Actions. Publish via the scalar CLI: `scalar registry
    publish`.'
  tags:
  - Git Integration
  - Governance
  - JSON Schema
  - OpenAPI
  - Registry
  - Spectral
  - Versioning
  humanURL: https://scalar.com/products/registry/getting-started
  properties:
  - type: GettingStarted
    url: https://scalar.com/products/registry/getting-started
  - type: Documentation
    url: https://guides.scalar.com/scalar/scalar-registry/getting-started
  - type: CLI
    url: https://guides.scalar.com/scalar/scalar-cli/getting-started
  - type: GitHubActions
    url: https://scalar.com/scalar/scalar-registry/github-actions
- aid: scalar:scalar-sdks
  name: Scalar SDKs
  description: Scalar SDKs generates type-safe client libraries from OpenAPI specifications. Supported languages include TypeScript,
    Python, Golang, PHP, Java, and Ruby. Features include automated GitHub workflows, code samples, full OpenAPI auth support,
    file streaming, and webhook support. SDK generation is $100 per month per language on paid plans.
  tags:
  - Code Generation
  - Go
  - Java
  - PHP
  - Python
  - Ruby
  - SDKs
  - TypeScript
  humanURL: https://scalar.com/products/sdks/getting-started
  properties:
  - type: GettingStarted
    url: https://scalar.com/products/sdks/getting-started
  - type: Documentation
    url: https://guides.scalar.com/scalar/scalar-sdks/getting-started
  - type: Pricing
    url: https://guides.scalar.com/scalar/pricing
- aid: scalar:scalar-cli
  name: Scalar CLI
  description: The Scalar CLI is a command-line interface for managing OpenAPI files, generating documentation, running mock
    servers, validating specs, and publishing to the Scalar Registry. Enables CI/CD integration and automation of the API
    documentation workflow.
  tags:
  - CLI
  - Developer Tools
  - Mock Server
  - OpenAPI
  - Validation
  humanURL: https://guides.scalar.com/scalar/scalar-cli/getting-started
  properties:
  - type: GettingStarted
    url: https://guides.scalar.com/scalar/scalar-cli/getting-started
  - type: Documentation
    url: https://guides.scalar.com/scalar/scalar-cli/getting-started
  - type: NPM
    url: https://www.npmjs.com/package/@scalar/cli
- aid: scalar:scalar-access-groups-api
  name: Scalar access-groups API
  description: The access-groups API from Scalar — 5 operation(s) for access-groups.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - access-groups
  properties:
  - type: OpenAPI
    url: openapi/scalar-access-groups-api-openapi.yml
- aid: scalar:scalar-analytics-api
  name: Scalar analytics API
  description: The analytics API from Scalar — 4 operation(s) for analytics.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - analytics
  properties:
  - type: OpenAPI
    url: openapi/scalar-analytics-api-openapi.yml
- aid: scalar:scalar-api-docs-api
  name: Scalar api-docs API
  description: The api-docs API from Scalar — 13 operation(s) for api-docs.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - api-docs
  properties:
  - type: OpenAPI
    url: openapi/scalar-api-docs-api-openapi.yml
- aid: scalar:scalar-auth-api
  name: Scalar auth API
  description: The auth API from Scalar — 27 operation(s) for auth.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - auth
  properties:
  - type: OpenAPI
    url: openapi/scalar-auth-api-openapi.yml
- aid: scalar:scalar-docs-api
  name: Scalar docs API
  description: The docs API from Scalar — 6 operation(s) for docs.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - docs
  properties:
  - type: OpenAPI
    url: openapi/scalar-docs-api-openapi.yml
- aid: scalar:scalar-docs-projects-api
  name: Scalar Docs Projects API
  description: The Docs Projects API from Scalar — 9 operation(s) for docs projects.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - Docs Projects
  properties:
  - type: OpenAPI
    url: openapi/scalar-docs-projects-api-openapi.yml
- aid: scalar:scalar-forgejo-api
  name: Scalar Forgejo API
  description: The Forgejo API from Scalar — 1 operation(s) for forgejo.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - Forgejo
  properties:
  - type: OpenAPI
    url: openapi/scalar-forgejo-api-openapi.yml
- aid: scalar:scalar-github-api
  name: Scalar github API
  description: The github API from Scalar — 16 operation(s) for github.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - github
  properties:
  - type: OpenAPI
    url: openapi/scalar-github-api-openapi.yml
- aid: scalar:scalar-internal-api
  name: Scalar Internal API
  description: The Internal API from Scalar — 1 operation(s) for internal.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - Internal
  properties:
  - type: OpenAPI
    url: openapi/scalar-internal-api-openapi.yml
- aid: scalar:scalar-login-portals-api
  name: Scalar login-portals API
  description: The login-portals API from Scalar — 3 operation(s) for login-portals.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - login-portals
  properties:
  - type: OpenAPI
    url: openapi/scalar-login-portals-api-openapi.yml
- aid: scalar:scalar-payment-api
  name: Scalar payment API
  description: The payment API from Scalar — 6 operation(s) for payment.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - payment
  properties:
  - type: OpenAPI
    url: openapi/scalar-payment-api-openapi.yml
- aid: scalar:scalar-publish-api
  name: Scalar publish API
  description: The publish API from Scalar — 11 operation(s) for publish.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - publish
  properties:
  - type: OpenAPI
    url: openapi/scalar-publish-api-openapi.yml
- aid: scalar:scalar-pubsub-api
  name: Scalar pubsub API
  description: The pubsub API from Scalar — 7 operation(s) for pubsub.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - pubsub
  properties:
  - type: OpenAPI
    url: openapi/scalar-pubsub-api-openapi.yml
- aid: scalar:scalar-rules-api
  name: Scalar rules API
  description: The rules API from Scalar — 6 operation(s) for rules.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - rules
  properties:
  - type: OpenAPI
    url: openapi/scalar-rules-api-openapi.yml
- aid: scalar:scalar-schemas-api
  name: Scalar schemas API
  description: The schemas API from Scalar — 7 operation(s) for schemas.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - schemas
  properties:
  - type: OpenAPI
    url: openapi/scalar-schemas-api-openapi.yml
- aid: scalar:scalar-sdks-api
  name: Scalar sdks API
  description: The sdks API from Scalar — 18 operation(s) for sdks.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - sdks
  properties:
  - type: OpenAPI
    url: openapi/scalar-sdks-api-openapi.yml
- aid: scalar:scalar-share-api
  name: Scalar share API
  description: The share API from Scalar — 1 operation(s) for share.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - share
  properties:
  - type: OpenAPI
    url: openapi/scalar-share-api-openapi.yml
- aid: scalar:scalar-signup-api
  name: Scalar signup API
  description: The signup API from Scalar — 1 operation(s) for signup.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - signup
  properties:
  - type: OpenAPI
    url: openapi/scalar-signup-api-openapi.yml
- aid: scalar:scalar-team-api
  name: Scalar team API
  description: The team API from Scalar — 36 operation(s) for team.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - team
  properties:
  - type: OpenAPI
    url: openapi/scalar-team-api-openapi.yml
- aid: scalar:scalar-themes-api
  name: Scalar themes API
  description: The themes API from Scalar — 4 operation(s) for themes.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - themes
  properties:
  - type: OpenAPI
    url: openapi/scalar-themes-api-openapi.yml
- aid: scalar:scalar-utility-api
  name: Scalar utility API
  description: The utility API from Scalar — 3 operation(s) for utility.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - utility
  properties:
  - type: OpenAPI
    url: openapi/scalar-utility-api-openapi.yml
- aid: scalar:scalar-vcs-api
  name: Scalar vcs API
  description: The vcs API from Scalar — 6 operation(s) for vcs.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - vcs
  properties:
  - type: OpenAPI
    url: openapi/scalar-vcs-api-openapi.yml
- aid: scalar:scalar-waitlist-api
  name: Scalar waitlist API
  description: The waitlist API from Scalar — 1 operation(s) for waitlist.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - waitlist
  properties:
  - type: OpenAPI
    url: openapi/scalar-waitlist-api-openapi.yml
- aid: scalar:scalar-workspace-api
  name: Scalar workspace API
  description: The workspace API from Scalar — 6 operation(s) for workspace.
  humanURL: https://scalar.com/products/api-references/getting-started
  tags:
  - workspace
  properties:
  - type: OpenAPI
    url: openapi/scalar-workspace-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/scalar-agentic-access.yml
- type: TrustCenter
  url: security/scalar-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/scalar-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/scalar-domain-security.yml
- type: Authentication
  url: authentication/scalar-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/scalar
- type: Website
  url: https://scalar.com/
  name: Scalar Website
- type: Documentation
  url: https://guides.scalar.com/scalar/introduction
  name: Scalar Documentation
- type: Pricing
  url: https://guides.scalar.com/scalar/pricing
  name: Scalar Pricing
- type: GitHub
  url: https://github.com/scalar/scalar
  name: Scalar GitHub Repository
- type: Discord
  url: https://discord.gg/scalar
  name: Scalar Discord Community
- type: Blog
  url: https://scalar.com/blog
  name: Scalar Blog
- type: ChangeLog
  url: https://github.com/scalar/scalar/releases
  name: Scalar Changelog
- type: Support
  url: mailto:support@scalar.com
  name: Scalar Support
- type: Dashboard
  url: https://dashboard.scalar.com/
  name: Scalar Dashboard
- type: SpectralRules
  url: https://github.com/api-evangelist/scalar/blob/main/rules/scalar-rules.yml
  name: Scalar Spectral Rules
- type: JSONSchema
  url: https://github.com/api-evangelist/scalar/blob/main/json-schema/scalar-openapi-document-schema.json
  name: Scalar OpenAPI Document JSON Schema
- type: JSONStructure
  url: https://github.com/api-evangelist/scalar/blob/main/json-structure/scalar-openapi-document-structure.json
  name: Scalar OpenAPI Document JSON Structure
- type: JSONLDContext
  url: https://github.com/api-evangelist/scalar/blob/main/json-ld/scalar-context.jsonld
  name: Scalar JSON-LD Context
- type: Vocabulary
  url: https://github.com/api-evangelist/scalar/blob/main/vocabulary/scalar-vocabulary.yml
  name: Scalar Vocabulary
- type: Examples
  url: https://github.com/api-evangelist/scalar/blob/main/examples/
  name: Scalar Usage Examples
- type: Integrations
  url: https://scalar.com/integrations
- type: LlmsText
  url: https://docs.scalar.com/llms.txt
segments:
- SDKs
- Clients
- Documentation
- Registries
- Developer Tools
integrations:
- name: API References Animation
- name: API Registry Animation
- name: SDK Animation
- name: Client Animation
- name: Registry
- name: API Client
- name: API Client Preview
- name: SDKs Preview
- name: API Registry Preview
- name: API Docs Preview
- name: logo
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
  url: https://apievangelist.com

Scalar

APIs 30

Open Collections 1

Pricing Plans 1