Claude Code Guide 2026: 25 Features with Examples + Demo

Claude Code began as a terminal coding assistant. It now runs as a layered agentic system. Underneath, Claude Code separates reminiscence, hooks, abilities, subagents, plugins, and MCP into distinct layers. Each layer adjustments what the mannequin can see or do.

This article covers 25 options and techniques for scaling Claude Code. It is written for AI engineers, software program engineers, and information scientists. Every code instance follows a documented format and runs as written. Each merchandise is labeled by standing, so you recognize what ships with Claude Code and what doesn’t.

What is Claude Code

Claude Code is Anthropic’s agentic coding instrument. It works within the terminal, the desktop app, and your IDE. It can learn information, run instructions, edit code, and name exterior instruments. Under the hood, it runs an agentic loop. That loop chooses instruments, accumulates context, and manages lengthy periods by way of compaction.

Safety boundaries come from permission modes, checkpoints, sandboxing, and managed settings. The identical loop is uncovered programmatically by way of the Agent SDK. Developers lengthen the instrument with a small set of primitives. Those primitives are CLAUDE.md, abilities, subagents, slash instructions, hooks, and MCP servers. Plugins bundle these primitives into one installable unit.

The 25 Features and Strategies

Each characteristic/technique is labeled. ‘Official’ means documented Anthropic performance. ‘Community method’ means a workflow sample, not a shipped characteristic. ‘Third-party instrument’ means software program constructed outdoors Anthropic.

1. CLAUDE.md reminiscence file (Official). This file is the agent’s structure to your repository. Claude reads it each session to anchor conventions and instructions.
2. Skills (Official). A talent is a SKILL.md file with frontmatter beneath .claude/abilities/<title>/. It helps /title invocation and autonomous invocation by Claude.
3. Subagents (Official). Subagents are specialised situations with their very own context home windows. Verbose work stays remoted, so your primary dialog stays centered.
4. Slash instructions (Official). These are typed shortcuts beginning with /. Built-ins embody /init, /compact, /context, /evaluate, and /security-review.
5. Hooks (Official). Hooks are deterministic scripts that fireside at outlined lifecycle factors. PreToolUse is the first safety checkpoint earlier than any instrument runs.
6. MCP servers (Official). Model Context Protocol connects Claude Code to GitHub, databases, and browsers. The server handles integration; Claude causes about what to do.
7. Plugins (Official). A plugin is a versioned bundle of abilities, subagents, instructions, hooks, and MCP definitions. One /plugin command installs the entire set.
8. Checkpoints (Official). Claude Code snapshots state mechanically earlier than adjustments. Press Escape twice to rewind when one thing breaks.
9. Plan mode (Official). Plan mode explores and proposes with out executing. It is right for scoping work earlier than committing edits.
10. Permission modes (Official). Default mode asks earlier than every file write and shell command. Other modes commerce oversight for velocity.
11. Auto Mode (Official, analysis preview). A separate Sonnet 4.6 classifier critiques every motion first. Safe actions proceed; dangerous ones get blocked or escalated.
12. Context compaction (Official). /compact condenses lengthy periods to protect usable context. /context reviews present context utilization.
13. Background duties (Official). Long shell instructions run with the run_in_background flag on the Bash instrument. Claude polls output with out blocking the dialog.
14. Agent SDK (Official). The SDK exposes the identical loop programmatically by way of question(). You can ship slash instructions like /code-review and course of outcomes.
15. Headless CLI (Official). claude -p "question" runs a one-shot course of and exits. Piped enter like cat logs.txt | claude -p additionally works.
16. GitHub Action and scheduled jobs (Official). Claude Code runs as a one-shot course of with no TTY. This allows CI integration, scheduled jobs, and pre-commit hooks.
17. Output types and statusLine (Official). Output types change response formatting. A customized statusLine renderer surfaces session state within the terminal.
18. Remote Control and cell push (Official). You can drive Claude Code from cell or internet surfaces. Claude can ship push notifications when duties end.
19. Away abstract (Official). This session-level characteristic surfaces context while you return to a paused session. It is enabled by default and might be opted out.
20. Sandboxing (Official). The sandboxed Bash instrument enforces OS-level filesystem and community isolation. Commands run with out prompts inside boundaries you outline.
21. Structured context folders (Community method). Organize task-specific folders for model tips, shopper information, or authorized terminology. The proper context masses for every activity, enhancing output relevance.
22. Dynamic workflows (Community method). Break advanced duties into smaller steps utilizing sub-agents. Common patterns embody ‘classify and act’ and ‘fan out and synthesize.’
23. Modular talent pipelines (Community method). Chain reusable abilities into end-to-end workflows. A assist pipeline can mix categorization, response technology, and escalation abilities.
24. External reminiscence layers (Third-party instrument). Tools comparable to Mem Search or Hermes lengthen recall throughout lengthy tasks. They sit outdoors Claude Code’s built-in reminiscence.
25. Resilience strategies (Community method). Practitioners reset and retry duties when output high quality degrades. This avoids context air pollution and retains outcomes constant.

Try the Interactive Demo