--- title: "Essential Claude Code Skills and Commands" url: https://daily.dev/posts/essential-claude-code-skills-and-commands-eszhu6inb source_url: https://batsov.com/articles/2026/03/11/essential-claude-code-skills-and-commands/ type: article source: "Bozhidar Batsov" published: 2026-03-31T12:29:15.685Z updated: 2026-03-31T12:47:03.569Z tags: ["code-review", "anthropic", "ai-assisted-development", "claude-code"] reading_time: 14 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Essential Claude Code Skills and Commands **[Bozhidar Batsov](https://daily.dev/sources/batsov)** · 14 min read · 0 upvotes · 0 comments ## Summary A practical guide to Claude Code's built-in skills and slash commands, covering the distinction between the two systems and how to use each effectively. Built-in skills covered include /simplify (parallel code quality review), /review (PR-style code review), /batch (large-scale parallel changes across a codebase), /loop (scheduled recurring prompts), /debug (session troubleshooting), and /claude-api (API reference loader). Slash commands covered include /compact, /diff, /btw, /copy, /rewind, /usage, /cost, /stats, /model, /fast, /memory, /context, and /plan. Also explains how to create custom skills using SKILL.md files with frontmatter options like disable-model-invocation, allowed-tools, and context: fork, plus workflow tips for chaining commands effectively. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#code-review](https://daily.dev/tags/code-review), [#anthropic](https://daily.dev/tags/anthropic), [#ai-assisted-development](https://daily.dev/tags/ai-assisted-development), [#claude-code](https://daily.dev/tags/claude-code) [View this post on daily.dev](https://daily.dev/posts/essential-claude-code-skills-and-commands-eszhu6inb)