Swagger website screenshot

Swagger

Swagger is an open-source framework by SmartBear for designing, building, documenting, and consuming RESTful APIs using the OpenAPI Specification. Originally created by Wordnik in 2011, Swagger became the OpenAPI Specification (OAS) in 2016 under the OpenAPI Initiative. The Swagger toolset includes Swagger UI for interactive documentation, Swagger Editor for writing OpenAPI specs, and Swagger Codegen for generating client SDKs and server stubs. The latest OpenAPI standard version is 3.2.0 (released September 2025).

Swagger publishes 5 APIs on the APIs.io network. Tagged areas include API Design, Documentation, Open Source, OpenAPI, and REST.

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

Swagger’s developer surface includes documentation, engineering blog, tooling, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
32.4/100 thin ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemium
5 APIs
API DesignDocumentationOpen SourceOpenAPIRESTStandardSwagger

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 32.4/100 · thin
Contract Quality 3.2 / 25
Developer Ergonomics 3.0 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 7.0 / 12
Discoverability 6.5 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 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/swagger: 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 5

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

Swagger UI

Swagger UI renders OpenAPI specifications as interactive API documentation, allowing developers to explore and test API endpoints directly in the browser. It generates a rich HT...

Swagger Editor

Swagger Editor is a browser-based editor for writing and validating OpenAPI and AsyncAPI specifications with real-time preview and validation. Available as a standalone web appl...

Swagger Codegen

Swagger Codegen generates server stubs, client SDKs, and API documentation from OpenAPI specifications in over 40 languages including Python, Java, JavaScript, Go, Ruby, C#, Swi...

Swagger Parser

Swagger Parser (swagger-parser) is a JavaScript library for parsing, validating, and dereferencing OpenAPI 2.0 and 3.x specifications. Available as an npm package.

OpenAPI Specification

The OpenAPI Specification (formerly Swagger Specification) is a language-agnostic standard for describing HTTP APIs. The current versions are OAS 3.1.1 (stable) and OAS 3.2.0 (l...

Pricing Plans 1

Published pricing tiers and plan structures.

Swagger Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Swagger Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Swagger Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Swagger Context

0 classes · 25 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Swagger API Rules

6 rules · 4 warnings 2 info

SPECTRAL

Swagger API Rules

10 rules · 4 errors 6 warnings

SPECTRAL

JSON Schema 2

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

OpenAPI Info Object

7 properties

JSON SCHEMA

OpenAPI Operation Object

10 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Openapi Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Openapi Spec Example

6 fields

EXAMPLE

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Swagger Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 OpenAPI Specification
OpenAPI Specification
 OpenAPI Initiative
OpenAPI Initiative

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Tools
Tools

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Community
Community

Company 4

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog
 Twitter
Twitter

Source (apis.yml)

apis.yml Raw ↑ 
aid: swagger
name: Swagger
description: Swagger is an open-source framework by SmartBear for designing, building, documenting, and consuming RESTful
  APIs using the OpenAPI Specification. Originally created by Wordnik in 2011, Swagger became the OpenAPI Specification (OAS)
  in 2016 under the OpenAPI Initiative. The Swagger toolset includes Swagger UI for interactive documentation, Swagger Editor
  for writing OpenAPI specs, and Swagger Codegen for generating client SDKs and server stubs. The latest OpenAPI standard
  version is 3.2.0 (released September 2025).
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/swagger.png
tags:
- API Design
- Documentation
- Open Source
- OpenAPI
- REST
- Standard
- Swagger
url: https://raw.githubusercontent.com/api-evangelist/swagger/refs/heads/main/apis.yml
created: '2025-01-01'
modified: '2026-05-02'
specificationVersion: '0.19'
apis:
- aid: swagger:swagger-ui
  name: Swagger UI
  description: Swagger UI renders OpenAPI specifications as interactive API documentation, allowing developers to explore
    and test API endpoints directly in the browser. It generates a rich HTML interface with try-it-out functionality from
    any OpenAPI 2.0, 3.0, or 3.1 specification.
  humanURL: https://swagger.io/tools/swagger-ui/
  tags:
  - Documentation
  - Interactive Docs
  - Open Source
  - OpenAPI
  - UI
  properties:
  - type: Documentation
    url: https://swagger.io/docs/open-source-tools/swagger-ui/usage/installation/
  - type: GettingStarted
    url: https://swagger.io/docs/open-source-tools/swagger-ui/usage/installation/
  - type: GitHubRepository
    url: https://github.com/swagger-api/swagger-ui
  - type: Docker
    url: https://hub.docker.com/r/swaggerapi/swagger-ui
  - type: npm
    url: https://www.npmjs.com/package/swagger-ui
- aid: swagger:swagger-editor
  name: Swagger Editor
  description: Swagger Editor is a browser-based editor for writing and validating OpenAPI and AsyncAPI specifications with
    real-time preview and validation. Available as a standalone web application and as Swagger Editor Next (v5).
  humanURL: https://swagger.io/tools/swagger-editor/
  tags:
  - API Design
  - Editor
  - Open Source
  - OpenAPI
  properties:
  - type: Documentation
    url: https://swagger.io/docs/open-source-tools/swagger-editor/
  - type: GitHubRepository
    url: https://github.com/swagger-api/swagger-editor
  - type: Live Demo
    url: https://editor.swagger.io/
- aid: swagger:swagger-codegen
  name: Swagger Codegen
  description: Swagger Codegen generates server stubs, client SDKs, and API documentation from OpenAPI specifications in over
    40 languages including Python, Java, JavaScript, Go, Ruby, C#, Swift, and TypeScript.
  humanURL: https://swagger.io/tools/swagger-codegen/
  tags:
  - Code Generation
  - Open Source
  - OpenAPI
  - SDK
  properties:
  - type: Documentation
    url: https://swagger.io/docs/open-source-tools/swagger-codegen/
  - type: GitHubRepository
    url: https://github.com/swagger-api/swagger-codegen
  - type: Docker
    url: https://hub.docker.com/r/swaggerapi/swagger-codegen-cli-v3
  - type: Generator API
    url: https://generator3.swagger.io/
- aid: swagger:swagger-parser
  name: Swagger Parser
  description: Swagger Parser (swagger-parser) is a JavaScript library for parsing, validating, and dereferencing OpenAPI
    2.0 and 3.x specifications. Available as an npm package.
  humanURL: https://github.com/swagger-api/swagger-parser
  tags:
  - JavaScript
  - OpenAPI
  - Parser
  - Tooling
  properties:
  - type: GitHubRepository
    url: https://github.com/swagger-api/swagger-parser
  - type: npm
    url: https://www.npmjs.com/package/swagger-parser
- aid: swagger:openapi-specification
  name: OpenAPI Specification
  description: The OpenAPI Specification (formerly Swagger Specification) is a language-agnostic standard for describing HTTP
    APIs. The current versions are OAS 3.1.1 (stable) and OAS 3.2.0 (latest). Governed by the OpenAPI Initiative (OAI) under
    the Linux Foundation.
  humanURL: https://swagger.io/specification/
  tags:
  - OpenAPI
  - REST
  - Standard
  properties:
  - type: Specification
    url: https://swagger.io/specification/
  - type: GitHubRepository
    url: https://github.com/OAI/OpenAPI-Specification
  - type: OpenAPI 3.2
    url: https://spec.openapis.org/oas/v3.2.0.html
  - type: OpenAPI 3.1
    url: https://spec.openapis.org/oas/v3.1.0.html
  - type: OpenAPI 2.0
    url: https://swagger.io/specification/v2/
common:
- type: DomainSecurity
  url: security/swagger-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/swagger
- type: Website
  url: https://swagger.io
- type: Documentation
  url: https://swagger.io/docs/
- type: GitHubOrganization
  url: https://github.com/swagger-api
- type: Blog
  url: https://swagger.io/blog/
- type: Tools
  url: https://swagger.io/tools/
- type: OpenAPI Specification
  url: https://swagger.io/specification/
- type: OpenAPI Initiative
  url: https://www.openapis.org/
- type: Community
  url: https://community.smartbear.com/
- type: Twitter
  url: https://twitter.com/SwaggerApi
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com