Design Patterns
Software design patterns catalog including creational (Abstract Factory, Builder, Factory Method, Singleton), structural (Adapter, Decorator, Facade, Proxy), behavioural (Chain of Responsibility, Mediator, Observer, Strategy, Specification), and architectural patterns (Repository, Strangler Fig, Domain Events, Rules Engine). Use when choosing patterns, implementing specific designs, or evaluating…
Install
$ agentstack add skill-itzcull-software-skills-design-patterns ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-itzcull-software-skills-design-patterns) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Purpose
Provide a reference catalog of software design patterns with implementation guidance, trade-offs, and practical examples. Based on the Gang of Four patterns and extended with modern architectural patterns.
When to use
- Choosing a design pattern for a recurring problem
- Implementing a specific pattern
- Evaluating whether a pattern is appropriate for a situation
- Understanding trade-offs between similar patterns
- Refactoring code to use established patterns
- Code review discussions about pattern usage
Pattern catalog
Creational
Abstract Factory, Builder, Factory Method, Singleton, Object Mother
Structural
Adapter, Decorator, Facade, Proxy
Behavioural
Chain of Responsibility, Mediator, Memento, Null Object, Observer, Specification, Strategy
Architectural / Domain
Domain Events, Repository, Rules Engine, Strangler Fig
Reference files
- [Overview and full catalog](references/overview.md)
- Individual patterns documented in [references/](references/)
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: itzcull
- Source: itzcull/software-skills
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.