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SKILL verified Apache-2.0 Self-run

Common Best Practices

skill-hoangnguyen0403-agent-skills-standard-common-best-practices · by HoangNguyen0403

Enforce SOLID principles, guard-clause style, function size limits, and intention-revealing naming across all languages. Use when refactoring for readability, applying clean-code patterns, reviewing naming conventions, or reducing function complexity.

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Install

$ agentstack add skill-hoangnguyen0403-agent-skills-standard-common-best-practices

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No 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.

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Reliability & compatibility

✓ Security review passed
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Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

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About

Global Best Practices

Priority: P0 (FOUNDATIONAL)

Core Principles

  • SOLID: Follow SRP (One reason to change), OCP (Open to extension), LSP, ISP, DIP.
  • KISS/DRY/YAGNI: Favor readability. Abstract repeated logic. No " in case" code.
  • Naming: Use intention-revealing names (isUserAuthenticated > checkUser). Match language casing.

Code Hygiene

  • Size Limits: Functions < 30 lines. Services < 600 lines. Utils < 400 lines.
  • Early Returns: Use guard clauses. Avoid deep nesting.
  • Comments: Explain why, not what. Refactor bad code; don't comment it.
  • Input: Validate/sanitize all external inputs.

Anti-Patterns

  • No Hardcoded Constants: Use named config/env vars.
  • No Deep Nesting: Use guard clauses.
  • No Global State: Prefer dependency injection.
  • No Empty Catches: Always handle, log, or rethrow.

References

  • [Code Structure Patterns](references/CODE_STRUCTURE.md) — file/function organization
  • [Effectiveness Guide](references/EFFECTIVENESS.md) — practical application examples

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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