Scalar is an open-source (MIT) API platform built on the OpenAPI standard. Its core is a self-hostable API Reference renderer that turns an OpenAPI or AsyncAPI document into a beautiful, interactive reference with a built-in API testing tool, plus a fully open-source, offline-first API Client (a Postman alternative available as a desktop app and in the browser). On top of the open-source components Scalar runs a hosted SaaS platform (dashboard.scalar.com) providing an API Registry that stores and versions OpenAPI documents behind a public read CDN (registry.scalar.com), a Docs product for developer portals with Git Sync and Markdown/MDX, SDK generation for TypeScript, Python, Go, Java, PHP, C#, and Ruby, hosted MCP servers, and an AI Agent for chatting with APIs. Scalar is the default API documentation UI for many frameworks (FastAPI, Hono, Elysia, NestJS, Laravel, and others). Publishing to the hosted registry is done through the Scalar CLI; the registry read surface and the Galaxy example API are public over HTTPS.
Scalar publishes 2 APIs on the APIs.io network: Registry Management API and Registry Read API. Tagged areas include API Documentation, API Client, Open Source, Developer Tools, and API Reference.
Scalar’s developer surface includes authentication, documentation, engineering blog, and 7 more developer resources.
Open-source (MIT) renderer that turns an OpenAPI/Swagger or AsyncAPI document into an interactive API reference with a built-in request-testing panel and multi-language code sam...
Fully open-source, offline-first API client built on the OpenAPI standard - a Postman/Insomnia alternative for sending REST, GraphQL, and WebSocket requests, organizing collecti...
Hosted developer-portal product that combines Markdown/MDX guides with generated API references, custom domains and subdomains, themes, versions, and two-way Git Sync from GitHu...
Hosted SDK generation that produces type-safe client libraries from an OpenAPI document for TypeScript, Python, Go, Java, PHP, C#, and Ruby, kept in sync with the registry. Paid...
AI layer that lets developers chat with an API inside the docs and exposes hosted MCP (Model Context Protocol) servers generated from an OpenAPI document so agents can call the ...
aid: scalar-api
url: https://raw.githubusercontent.com/api-evangelist/scalar-api/refs/heads/main/apis.yml
name: Scalar
kind: company
description: Scalar is an open-source (MIT) API platform built on the OpenAPI standard. Its core is a self-hostable API Reference
renderer that turns an OpenAPI or AsyncAPI document into a beautiful, interactive reference with a built-in API testing
tool, plus a fully open-source, offline-first API Client (a Postman alternative available as a desktop app and in the browser).
On top of the open-source components Scalar runs a hosted SaaS platform (dashboard.scalar.com) providing an API Registry
that stores and versions OpenAPI documents behind a public read CDN (registry.scalar.com), a Docs product for developer
portals with Git Sync and Markdown/MDX, SDK generation for TypeScript, Python, Go, Java, PHP, C#, and Ruby, hosted MCP servers,
and an AI Agent for chatting with APIs. Scalar is the default API documentation UI for many frameworks (FastAPI, Hono, Elysia,
NestJS, Laravel, and others). Publishing to the hosted registry is done through the Scalar CLI; the registry read surface
and the Galaxy example API are public over HTTPS.
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-api.png
tags:
- API Documentation
- API Client
- Open Source
- Developer Tools
- API Reference
- OpenAPI
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.19'
apis:
- aid: scalar-api:scalar-api-reference
name: Scalar API Reference
tags:
- API Reference
- API Documentation
- Open Source
- OpenAPI
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://guides.scalar.com/scalar/scalar-api-references/getting-started
properties:
- url: https://guides.scalar.com/scalar/scalar-api-references/getting-started
type: Documentation
- url: https://github.com/scalar/scalar/blob/main/packages/api-reference/README.md
type: SourceCode
description: Open-source (MIT) renderer that turns an OpenAPI/Swagger or AsyncAPI document into an interactive API reference
with a built-in request-testing panel and multi-language code samples. Embeds from a single HTML file or as the @scalar/api-reference
npm package, and ships as the default docs UI in dozens of frameworks. This is a self-hosted component library, not a
hosted REST API - surface documented as a capability area (endpointsModeled).
- aid: scalar-api:scalar-api-client
name: Scalar API Client
tags:
- API Client
- Testing
- Developer Tools
- Open Source
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://guides.scalar.com/scalar/scalar-api-client/getting-started
properties:
- url: https://guides.scalar.com/scalar/scalar-api-client/getting-started
type: Documentation
- url: https://github.com/scalar/scalar
type: SourceCode
description: Fully open-source, offline-first API client built on the OpenAPI standard - a Postman/Insomnia alternative
for sending REST, GraphQL, and WebSocket requests, organizing collections and environments, running pre/after request
scripts, and executing collection runners. Available as a desktop app (Windows, macOS, Linux) and in the browser. Consumer-side
developer tool, not a hosted API (endpointsModeled).
- aid: scalar-api:scalar-docs-platform
name: Scalar Docs Platform
tags:
- API Documentation
- Developer Portal
- Git Sync
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://guides.scalar.com/scalar/scalar-docs/getting-started
properties:
- url: https://guides.scalar.com/scalar/scalar-docs/getting-started
type: Documentation
- url: https://scalar.com/products/docs/getting-started
type: SignUp
description: Hosted developer-portal product that combines Markdown/MDX guides with generated API references, custom domains
and subdomains, themes, versions, and two-way Git Sync from GitHub. Content is deployed via dashboard.scalar.com or automated
GitHub workflows. Hosted SaaS surface, not a public REST API (endpointsModeled).
- aid: scalar-api:scalar-cli
name: Scalar CLI
tags:
- CLI
- Developer Tools
- Open Source
- OpenAPI
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://guides.scalar.com/scalar/scalar-registry/cli
properties:
- url: https://guides.scalar.com/scalar/scalar-registry/cli
type: Documentation
- url: https://www.npmjs.com/package/@scalar/cli
type: SourceCode
description: Open-source command-line tool (@scalar/cli) for validating and linting OpenAPI documents (Spectral rules),
previewing references, and publishing/listing/ updating/deleting documents in the Scalar Registry (scalar registry publish,
list, update, delete; scalar document validate, lint; scalar team list/set). Authenticates with a Scalar API key. Command-line
surface, not an HTTP API (endpointsModeled).
- aid: scalar-api:scalar-sdk-generation
name: Scalar SDK Generation
tags:
- SDK
- Code Generation
- OpenAPI
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://scalar.com/products/sdks
properties:
- url: https://scalar.com/products/sdks
type: Documentation
description: Hosted SDK generation that produces type-safe client libraries from an OpenAPI document for TypeScript, Python,
Go, Java, PHP, C#, and Ruby, kept in sync with the registry. Paid add-on on the hosted platform (per-language). Generation
workflow, not a standalone public REST API (endpointsModeled).
- aid: scalar-api:scalar-agent-mcp
name: Scalar Agent and MCP
tags:
- AI
- MCP
- Agent
- Developer Tools
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://scalar.com/products/agent
properties:
- url: https://scalar.com/products/agent
type: Documentation
- url: https://scalar.com/products/agent/pricing
type: Plans
description: AI layer that lets developers chat with an API inside the docs and exposes hosted MCP (Model Context Protocol)
servers generated from an OpenAPI document so agents can call the API. Metered in Agent Scalar credits. Hosted AI/MCP
capability area (endpointsModeled).
- aid: scalar-api:scalar-api-registry-management-api
name: Scalar Registry Management API
description: Publish / list / update / delete documents - performed via the Scalar CLI (modeled).
humanURL: https://guides.scalar.com/scalar/scalar-api-references/getting-started
baseURL: https://registry.scalar.com
tags:
- Registry Management
properties:
- type: OpenAPI
url: openapi/scalar-api-registry-management-api-openapi.yml
- type: Documentation
url: https://guides.scalar.com/scalar/scalar-registry/getting-started
- type: APIReference
url: https://guides.scalar.com/scalar/scalar-registry/cli
- type: PostmanCollection
url: collections/scalar-api.postman_collection.json
- type: OpenCollection
url: collections/scalar-api.opencollection.json
- type: SourceCode
url: https://github.com/scalar/scalar/tree/main/packages/galaxy
- aid: scalar-api:scalar-api-registry-read-api
name: Scalar Registry Read API
description: Public retrieval of published OpenAPI documents (confirmed public surface).
humanURL: https://guides.scalar.com/scalar/scalar-api-references/getting-started
baseURL: https://registry.scalar.com
tags:
- Registry Read
properties:
- type: OpenAPI
url: openapi/scalar-api-registry-read-api-openapi.yml
- type: Documentation
url: https://guides.scalar.com/scalar/scalar-registry/getting-started
- type: APIReference
url: https://guides.scalar.com/scalar/scalar-registry/cli
- type: PostmanCollection
url: collections/scalar-api.postman_collection.json
- type: OpenCollection
url: collections/scalar-api.opencollection.json
- type: SourceCode
url: https://github.com/scalar/scalar/tree/main/packages/galaxy
common:
- type: AgenticAccess
url: agentic-access/scalar-api-agentic-access.yml
- type: Authentication
url: authentication/scalar-api-authentication.yml
- type: GitHubOrganization
url: https://github.com/scalar
- type: LinkedIn
url: https://www.linkedin.com/company/scalar-com
- type: Website
url: https://scalar.com
- type: Documentation
url: https://guides.scalar.com
- type: Plans
url: plans/scalar-api-plans-pricing.yml
- type: RateLimits
url: rate-limits/scalar-api-rate-limits.yml
- type: FinOps
url: finops/scalar-api-finops.yml
- url: https://scalar.com/blog
type: Blog
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
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