# Best Practices

> Best Practices is a community-maintained skill from addyosmani. Anomity scores its risk at 50 out of 100 (medium).

- **Canonical URL:** https://catalog.anomity.ai/skill/web-best-practices
- **Kind:** Skill
- **Publisher:** addyosmani
- **Trust level:** community
- **Risk score:** 50/100 (medium)
- **Website:** https://github.com/addyosmani
- **Last updated:** 2026-09-02
- **JSON:** https://catalog.anomity.ai/api/entries/skill/web-best-practices

## Description

Applies modern web development practices across security, performance, and code quality — the accumulated "you should probably not do that" knowledge that rarely makes it into a linter rule.

It reads and writes project files. Its usefulness depends on how current the encoded guidance is: web platform advice ages quickly, and a skill recommending a pattern that was correct three years ago is worse than no skill, because it arrives with apparent authority. Check the last update date before relying on it for security guidance specifically.

## Why it scored 50

The score starts at the catalog's neutral base of 50 and moves only through the signals below. The formula is published at https://catalog.anomity.ai/about — there is no model and no hidden heuristic.

| Signal | Contribution | Severity | Evidence |
| --- | --- | --- | --- |
| Established community project | -10 | trust offset |  |
| 1 high-risk capability: filesystem:write | +10 | high |  |

Clamped result: **50/100**, band **medium**.

## Capabilities

| Capability | Name | Security implication |
| --- | --- | --- |
| `filesystem:read` | Filesystem read | Can read files on the host system. Used for context, indexing, or analysis. |
| `filesystem:write` | Filesystem write | Can create, edit, or delete files on the host system. High-impact capability — anything from helpful edits to planting persistence. |

## Related skills

- [AI Research Reproduction](https://catalog.anomity.ai/skill/ai-research-reproduction) — risk 100 (critical)
- [Using Git Worktrees](https://catalog.anomity.ai/skill/using-git-worktrees) — risk 65 (high)
- [Test-Driven Development](https://catalog.anomity.ai/skill/test-driven-development) — risk 50 (medium)
- [Writing Skills](https://catalog.anomity.ai/skill/writing-skills) — risk 50 (medium)
- [Angular Developer](https://catalog.anomity.ai/skill/angular-developer) — risk 20 (low)
- [App Insights Instrumentation](https://catalog.anomity.ai/skill/appinsights-instrumentation) — risk 20 (low)

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Source: Anomity Catalog (https://catalog.anomity.ai/). Scoring methodology: https://catalog.anomity.ai/about. Machine-readable index: https://catalog.anomity.ai/llms.txt · https://catalog.anomity.ai/openapi.json