Home
Providers
SpecLynx
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.
SpecLynx publishes 6 APIs on the APIs.io network. Tagged areas include API Design, AsyncAPI, Developer Tools, JSON Schema, and OpenAPI.
The SpecLynx catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
SpecLynx’s developer surface includes documentation and 7 more developer resources.
6 APIs
17 Features
API Design AsyncAPI Developer Tools JSON Schema OpenAPI Toolkit VSCode
On this page
Kin Score
APIs 6
Pricing Plans 1
Rate Limits 1
FinOps 1
Features 17
Vocabularies 1
Spectral Rules 1
JSON Schema 2
JSON Structure 1
Examples 1
Security Posture 1
Resources 8
apis.yml
32 Operational Transparency
Composite quality — 31.6/100 · thin
Contract Quality
4.4 / 25
Developer Ergonomics
1.7 / 20
Commercial Clarity
7.9 / 20
Operational Transparency
4.1 / 13
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
Individual APIs this provider publishes, each with its own machine-readable definition.
Published pricing tiers and plan structures.
Documented rate limits and quota policies.
Cost, billing, and metering signals for API financial operations.
Notable capabilities this provider offers.
Scroll for all 17
JSON-LD contexts and semantic vocabularies used across these APIs.
Spectral governance rulesets for linting and validating these APIs.
Standalone JSON Schema definitions for this provider's data models.
JSON Structure definitions describing this provider's data shapes.
Example request and response payloads for these APIs.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Company 1
The organization behind the API
Other 2
Properties that don't map to a standard resource type
Source (apis.yml)
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
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/speclynx.png
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:
- type: DomainSecurity
url: security/speclynx-domain-security.yml
- 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'