Design Patterns

Reusable solutions to commonly occurring problems in software design, including the Gang of Four catalog (creational, structural, behavioral) and core API design patterns such as HATEOAS, idempotency keys, webhooks, and sagas.

Design Patterns publishes 1 API on the APIs.io network. Tagged areas include Best Practices, Object-Oriented Programming, Software Architecture, Software Engineering, and API Design.

The Design Patterns catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

📡 Source on GitHub

14.4/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemium

1 APIs

Best PracticesObject-Oriented ProgrammingSoftware Architecture Software Engineering API Design

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 14.4/100 · emerging

Contract Quality 1.7 / 25

Developer Ergonomics 1.4 / 20

Access Clarity 3.2 / 20

Operational Transparency 1.4 / 13

Contract Governance 1.8 / 12

Discoverability 5.0 / 10

Agent readiness — 3/100 · 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 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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.

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APIs 1

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

Design Patterns Catalog

Rules, capabilities, vocabulary, and linked-data description covering classic Gang of Four patterns and key API design patterns.

Pricing Plans 1

Published pricing tiers and plan structures.

Design Patterns Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Design Patterns Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Design Patterns Finops

FINOPS

Semantic Vocabularies 1

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

Design Patterns Context

0 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Design Patterns API Rules

0 rules ·

SPECTRAL

Resources

Documentation 2

Reference material describing how the API behaves

Reference

Reference

Reference

Reference

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Source (apis.yml)

aid: design-patterns
name: Design Patterns
description: Reusable solutions to commonly occurring problems in software design, including the Gang of Four catalog (creational,
  structural, behavioral) and core API design patterns such as HATEOAS, idempotency keys, webhooks, and sagas.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
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/design-patterns.png
tags:
- Best Practices
- Object-Oriented Programming
- Software Architecture
- Software Engineering
- API Design
url: https://raw.githubusercontent.com/api-evangelist/design-patterns/refs/heads/main/apis.yml
created: '2025-01-01'
modified: '2026-04-28'
specificationVersion: '0.23'
apis:
- aid: design-patterns:catalog
  name: Design Patterns Catalog
  description: Rules, capabilities, vocabulary, and linked-data description covering classic Gang of Four patterns and key
    API design patterns.
  tags:
  - Patterns
  - Architecture
  properties:
  - type: Rules
    url: https://raw.githubusercontent.com/api-evangelist/design-patterns/main/rules/design-patterns-rules.yml
  - type: Capabilities
    url: https://raw.githubusercontent.com/api-evangelist/design-patterns/main/capabilities/design-patterns-capabilities.md
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/design-patterns/main/vocabulary/design-patterns-vocabulary.json
  - type: JSONLD
    url: https://raw.githubusercontent.com/api-evangelist/design-patterns/main/json-ld/design-patterns.jsonld
common:
- type: Reference
  url: https://refactoring.guru/design-patterns
- type: Reference
  url: https://en.wikipedia.org/wiki/Software_design_pattern
- type: GitHubOrganization
  url: https://github.com/api-evangelist
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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