Design Patterns website screenshot

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.

🌐 Visit website 📡 Source on GitHub
22.3/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
1 APIs
Best PracticesObject-Oriented ProgrammingSoftware ArchitectureSoftware EngineeringAPI Design

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 22.3/100 · emerging
Contract Quality 2.0 / 25
Developer Ergonomics 1.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 1.2 / 12
Discoverability 5.0 / 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/design-patterns: 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 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)

apis.yml Raw ↑ 
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
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: '0.19'
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