SpecLynx website screenshot

SpecLynx

SpecLynx provides enterprise-ready API tooling for authors and maintainers of OpenAPI, AsyncAPI, and Arazzo specifications. Built by veterans with 15+ years of Swagger and OpenAPI development experience, SpecLynx products prioritize security (specs never leave your machine), accuracy, and developer productivity. Core products include a VS Code extension, browser-based editor, CLI, language service library, and the ApiDOM semantic parsing engine.

6 APIs 17 Features
API DesignAsyncAPIDeveloper ToolsJSON SchemaOpenAPIToolkitVSCode

APIs

SpecLynx

Stop wrestling with OpenAPI specs. SpecLynx OpenAPI Toolkit delivers the most effective way to author and manage your API specs, bringing unprecedented ease, pinpoint accuracy, ...

SpecLynx OpenAPI Toolkit

A VS Code extension providing semantic editing, real-time validation, linting, and live preview for OpenAPI, AsyncAPI, and Arazzo specifications. Features context-aware autocomp...

SpecLynx Editor

A browser-based OpenAPI editor with real-time validation, smart autocompletion, and live preview. No installation required — runs entirely client-side with all processing in-bro...

SpecLynx CLI

A command-line interface for overlay operations, dereferencing, bundling, format conversion (JSON/YAML), and validation of OpenAPI, AsyncAPI, Arazzo, and JSON Schema documents.

SpecLynx Language Service

An LSP-compatible npm library (@speclynx/apidom-ls) providing 13 intelligent editing capabilities for API description languages, including validation, completion, hover document...

SpecLynx ApiDOM

A unified semantic parsing engine that underpins all SpecLynx products. ApiDOM parses OpenAPI, AsyncAPI, Arazzo, and JSON Schema specifications into a semantic data model with l...

Pricing Plans

Speclynx Plans Pricing

3 plans

PLANS

Rate Limits

Speclynx Rate Limits

5 limits

RATE LIMITS

FinOps

Features

Semantic Editing
Context-Aware Autocompletion
Real-Time Validation
Spectral Integration
Semantic Validation
Live Preview
Scalar Renderer
SwaggerUI Renderer
Go to Definition
Find References
JSON/YAML Conversion
Formatting
Dereferencing
Overlay Support
No Telemetry
Offline-First
Multi-Spec Support

Semantic Vocabularies

Speclynx Context

5 classes · 11 properties

JSON-LD

JSON Structure

Speclynx Product Structure

0 properties

JSON STRUCTURE

Example Payloads

Resources

🔗
Website
Website
🔗
Documentation
Documentation
🔗
Marketplace
Marketplace
👥
GitHubRepo
GitHubRepo
🔗
OpenVSX
OpenVSX
🔗
Contact
Contact
🔗
LlmsText
LlmsText

Sources

apis.yml Raw ↑
aid: speclynx
url: https://raw.githubusercontent.com/api-evangelist/speclynx/refs/heads/main/apis.yml
name: SpecLynx
description: SpecLynx provides enterprise-ready API tooling for authors and maintainers of OpenAPI, AsyncAPI, and Arazzo specifications.
  Built by veterans with 15+ years of Swagger and OpenAPI development experience, SpecLynx products prioritize security (specs
  never leave your machine), accuracy, and developer productivity. Core products include a VS Code extension, browser-based
  editor, CLI, language service library, and the ApiDOM semantic parsing engine.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
access: 3rd-Party
tags:
- API Design
- AsyncAPI
- Developer Tools
- JSON Schema
- OpenAPI
- Toolkit
- VSCode
created: '2026-01-02'
modified: '2026-05-02'
position: Consumer
segments:
- Developer Tools
- API Design
apis:
- aid: speclynx:speclynx
  name: SpecLynx
  tags:
  - API Design
  - Developer Tools
  - OpenAPI
  - Toolkit
  - VSCode
  humanURL: https://speclynx.com/
  properties:
  - url: https://speclynx.com/
    type: Website
  - url: https://speclynx.com/openapi-toolkit/
    type: Documentation
  - url: https://github.com/speclynx/vscode-openapi-toolkit
    type: GitHubRepo
  - url: https://marketplace.visualstudio.com/items?itemName=SpecLynx.vscode-openapi-toolkit
    type: Marketplace
  description: Stop wrestling with OpenAPI specs. SpecLynx OpenAPI Toolkit delivers the most effective way to author and manage
    your API specs, bringing unprecedented ease, pinpoint accuracy, and unmatched power directly to your VSCode workflow.
    Supports OpenAPI 2.0/3.0/3.1, AsyncAPI 2.x, Arazzo 1.x, and JSON Schema.
- aid: speclynx:openapi-toolkit
  name: SpecLynx OpenAPI Toolkit
  tags:
  - API Design
  - AsyncAPI
  - Developer Tools
  - Linting
  - OpenAPI
  - Spectral
  - VSCode
  humanURL: https://speclynx.com/openapi-toolkit/
  properties:
  - url: https://speclynx.com/openapi-toolkit/
    type: Documentation
  - url: https://marketplace.visualstudio.com/items?itemName=SpecLynx.vscode-openapi-toolkit
    type: Marketplace
  - url: https://open-vsx.org/extension/SpecLynx/vscode-openapi-toolkit
    type: OpenVSX
  - url: https://github.com/speclynx/vscode-openapi-toolkit
    type: GitHubRepo
  description: A VS Code extension providing semantic editing, real-time validation, linting, and live preview for OpenAPI,
    AsyncAPI, and Arazzo specifications. Features context-aware autocompletion, Go to Definition, Find References, JSON/YAML
    conversion, Spectral ruleset integration, and Scalar/SwaggerUI live preview. Works on desktop VS Code, vscode.dev, github.dev,
    and GitHub Codespaces.
- aid: speclynx:editor
  name: SpecLynx Editor
  tags:
  - API Design
  - Browser
  - Developer Tools
  - OpenAPI
  - Online Tool
  humanURL: https://speclynx.com/editor/
  properties:
  - url: https://speclynx.com/editor/
    type: Documentation
  - url: https://editor.speclynx.com/
    type: Portal
  description: A browser-based OpenAPI editor with real-time validation, smart autocompletion, and live preview. No installation
    required — runs entirely client-side with all processing in-browser. Supports OpenAPI 2.0, 3.0.x, and 3.1.x in both JSON
    and YAML. Free and open-source under Apache 2.0.
- aid: speclynx:cli
  name: SpecLynx CLI
  tags:
  - CLI
  - Developer Tools
  - JSON Schema
  - OpenAPI
  - Tooling
  humanURL: https://speclynx.com/
  properties:
  - url: https://speclynx.com/
    type: Documentation
  description: A command-line interface for overlay operations, dereferencing, bundling, format conversion (JSON/YAML), and
    validation of OpenAPI, AsyncAPI, Arazzo, and JSON Schema documents.
- aid: speclynx:language-service
  name: SpecLynx Language Service
  tags:
  - API Design
  - Developer Tools
  - LSP
  - Library
  - OpenAPI
  humanURL: https://speclynx.com/language-service/
  properties:
  - url: https://speclynx.com/language-service/
    type: Documentation
  description: An LSP-compatible npm library (@speclynx/apidom-ls) providing 13 intelligent editing capabilities for API description
    languages, including validation, completion, hover documentation, Go to Definition, Find References, semantic tokens,
    formatting, dereferencing, and format conversion. Composable with any editor through an LSP wrapper.
- aid: speclynx:apidom
  name: SpecLynx ApiDOM
  tags:
  - API Design
  - Developer Tools
  - Library
  - OpenAPI
  - Parser
  humanURL: https://speclynx.com/apidom/
  properties:
  - url: https://speclynx.com/apidom/
    type: Documentation
  description: A unified semantic parsing engine that underpins all SpecLynx products. ApiDOM parses OpenAPI, AsyncAPI, Arazzo,
    and JSON Schema specifications into a semantic data model with lossless preservation of comments, key ordering, and source
    maps. Built on Tree-sitter for error recovery during editing. Isomorphic — works identically in Node.js and browser environments.
common:
- url: https://speclynx.com/
  name: Website | SpecLynx
  type: Website
  description: 'null'
- url: https://speclynx.com/openapi-toolkit/
  name: OpenAPI Toolkit Documentation | SpecLynx
  type: Documentation
  description: 'null'
- url: https://marketplace.visualstudio.com/items?itemName=SpecLynx.vscode-openapi-toolkit
  name: VS Code Marketplace | SpecLynx OpenAPI Toolkit
  type: Marketplace
  description: 'null'
- url: https://github.com/speclynx/vscode-openapi-toolkit
  name: GitHub Repository | SpecLynx OpenAPI Toolkit
  type: GitHubRepo
  description: 'null'
- url: https://open-vsx.org/extension/SpecLynx/vscode-openapi-toolkit
  name: Open VSX Registry | SpecLynx OpenAPI Toolkit
  type: OpenVSX
  description: 'null'
- url: mailto:info@speclynx.com
  name: Contact | SpecLynx
  type: Contact
  description: 'null'
- name: Features
  type: Features
  data:
  - name: Semantic Editing
  - name: Context-Aware Autocompletion
  - name: Real-Time Validation
  - name: Spectral Integration
  - name: Semantic Validation
  - name: Live Preview
  - name: Scalar Renderer
  - name: SwaggerUI Renderer
  - name: Go to Definition
  - name: Find References
  - name: JSON/YAML Conversion
  - name: Formatting
  - name: Dereferencing
  - name: Overlay Support
  - name: No Telemetry
  - name: Offline-First
  - name: Multi-Spec Support
- type: LlmsText
  url: https://speclynx.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.19'