Design

A curated index of services, tooling, and open source solutions for API design, specification editing, linting, and governance. This collection covers visual API designers, specification languages, linting and style guide tools, schema registries, governance platforms, and design-first frameworks across the API design lifecycle stop.

Design is profiled on the APIs.io network. Tagged areas include API Design, Governance, Linting, and Specification Languages.

📡 Profile data on GitHub

1.7/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

0 APIs

API Design Governance LintingSpecification Languages

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 1.7/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 3.3 / 9

Regulatory Posture 0.0 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/design/"><img src="https://apis.io/badge/design/card.svg" alt="Design on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/design: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Source (apis.yml)

aid: design
name: Design
description: A curated index of services, tooling, and open source solutions for API design, specification editing, linting,
  and governance. This collection covers visual API designers, specification languages, linting and style guide tools, schema
  registries, governance platforms, and design-first frameworks across the API design lifecycle stop.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- API Design
- Governance
- Linting
- Specification Languages
url: https://raw.githubusercontent.com/api-evangelist/design/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-04-28'
specificationVersion: '0.19'
network:
- name: API Blueprint
  url: https://raw.githubusercontent.com/api-evangelist/api-blueprint/refs/heads/main/apis.yml
- name: Apiary
  url: https://raw.githubusercontent.com/api-evangelist/apiary/refs/heads/main/apis.yml
- name: Apicurio
  url: https://raw.githubusercontent.com/api-evangelist/apicurio/refs/heads/main/apis.yml
- name: Apidog
  url: https://raw.githubusercontent.com/api-evangelist/apidog/refs/heads/main/apis.yml
- name: AsyncAPI
  url: https://raw.githubusercontent.com/api-evangelist/asyncapi/refs/heads/main/apis.yml
- name: Buf
  url: https://raw.githubusercontent.com/api-evangelist/buf/refs/heads/main/apis.yml
- name: Connexion
  url: https://raw.githubusercontent.com/api-evangelist/connexion/refs/heads/main/apis.yml
- name: FastAPI
  url: https://raw.githubusercontent.com/api-evangelist/fastapi/refs/heads/main/apis.yml
- name: JSON Schema
  url: https://raw.githubusercontent.com/api-evangelist/json-schema/refs/heads/main/apis.yml
- name: OpenAPI
  url: https://raw.githubusercontent.com/api-evangelist/openapi/refs/heads/main/apis.yml
- name: Optic
  url: https://raw.githubusercontent.com/api-evangelist/optic/refs/heads/main/apis.yml
- name: Prism
  url: https://raw.githubusercontent.com/api-evangelist/prism/refs/heads/main/apis.yml
- name: RAML
  url: https://raw.githubusercontent.com/api-evangelist/raml/refs/heads/main/apis.yml
- name: Redocly
  url: https://raw.githubusercontent.com/api-evangelist/redocly/refs/heads/main/apis.yml
- name: Smithy
  url: https://raw.githubusercontent.com/api-evangelist/smithy/refs/heads/main/apis.yml
- name: Spectral
  url: https://raw.githubusercontent.com/api-evangelist/spectral/refs/heads/main/apis.yml
- name: Stoplight
  url: https://raw.githubusercontent.com/api-evangelist/stoplight/refs/heads/main/apis.yml
- name: Swagger
  url: https://raw.githubusercontent.com/api-evangelist/swagger/refs/heads/main/apis.yml
- name: TypeSpec
  url: https://raw.githubusercontent.com/api-evangelist/typespec/refs/heads/main/apis.yml
- name: Vacuum
  url: https://raw.githubusercontent.com/api-evangelist/vacuum/refs/heads/main/apis.yml
- name: Zally
  url: https://raw.githubusercontent.com/api-evangelist/zally/refs/heads/main/apis.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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