Claude Code status line: always see context %, cost and your 5-hour limit
Set up a Claude Code status line with /statusline or a jq script to show context %, session cost, 5-hour limit and effort, and save tokens.
Claude Code
Everything about Claude Code: commands, CLAUDE.md, hooks, plugins, saving tokens. · 22 articles
Esc Esc in Claude Code: rewind code and conversation with checkpoints
Automatic checkpoints before every prompt; /rewind restores code, conversation, or summarizes to free context. What checkpoints don't track.
Run parallel Claude Code sessions with git worktrees without collisions
claude --worktree gives each session its own checkout; .worktreeinclude copies .env files; subagent isolation: worktree; cleanup rules.
Claude Code plugins: package skills, agents and hooks for your team, and their context cost
Plugins bundle skills, subagents, hooks and MCP into one /plugin install. Install scopes, marketplaces, per-turn context cost and security.
Karpathy's 4 CLAUDE.md principles: ask first, write less, change surgically, verify
The andrej-karpathy-skills repo explained: four principles that make Claude Code guess less, write less, and produce cleaner diffs. Setup and tradeoffs.
Cutting token usage in Claude Code: 8 habits from the official docs
Clear between tasks, pick the right model and effort, prefer CLIs over MCP, slim CLAUDE.md, filter output with hooks, delegate noisy work, be specific.
Why long Claude Code sessions burn usage: reading /usage and the prompt cache line
Seven reasons usage climbs in long sessions, how to read cache stats in /usage, the f fix shortcut, and telling the different limit messages apart.
Give Claude a check to run: tests, goals, Stop hooks and spec reviews
Without something to run, you are the test suite. Four levels of verification from prompt to Stop hook, and when a CLAUDE.md line should become a hook.
Keep CLAUDE.md under 200 lines: what to write, what to cut, where the rest goes
CLAUDE.md loads every session, so length hurts. A two-question test, a lean template, and when to use rules, skills or hooks instead.
Prompting Claude Code: say only what it can't see, “be ambitious”, and let it interview you
Prompt tips from the best practices: symptoms and definition of done, @file and pipes, “be ambitious”, and an interview prompt that yields SPEC.md.
Custom slash commands in Claude Code: turn repeated prompts into one-liners
Commands in .claude/commands, frontmatter, $ARGUMENTS/$0 arguments, shell injection with !`cmd`, and narrow allowed-tools.
Plan mode in Claude Code: agree on the plan before the agent touches code
Turning on plan mode (Shift+Tab, /plan, defaultMode), the approval flow, editing plans with Ctrl+G and when to use it.
Model routing for subagents: let Haiku do the chores, Opus the hard parts
Every Claude Code subagent can run its own model. Configure it well and you save tokens without losing quality.
Agent Teams in Claude Code: several Claude sessions working like a real team
One lead coordinates, teammates have their own context, share a task list and message each other directly. Experimental, powerful, token-hungry.
Claude Code Hooks: auto-format, block dangerous commands, enforce tests — no reminders needed
CLAUDE.md is advice; hooks are law. Scripts run at fixed points in the agent loop, so the result is guaranteed.
Running Claude Code headless (claude -p): agents in scripts, cron and CI
Not just a terminal chat — headless mode turns Claude Code into a CLI command you can drop into automated pipelines.
Claude Code GitHub Action: type @claude in a PR to review, fix bugs, answer questions
Anthropic's official action runs on your own runner: automated PR review, issue triage, docs sync, scheduled maintenance.
Claude Code now reads AGENTS.md: one instruction file for every AI coding tool
Since 2.1.277, if a folder has no CLAUDE.md, Claude Code uses AGENTS.md — the open format already used by Codex, Cursor and others.
Inside Claude Code: an AI agent is really a loop around a model
Claude Code, Cursor and Devin share the same “harness”: think → call a tool → observe → repeat. Understanding the loop makes you better at using agents.
A forgotten /loop and a four-figure API bill: what repeated agent runs really cost
Every iteration resends the whole context. If iterations are spaced longer than the prompt cache lives, each one pays full price.
claude-howto: a free 10-step Claude Code learning path (with a Vietnamese edition)
Installed Claude Code — now what? This open-source repo goes from slash commands to plugins, with diagrams, templates and self-check quizzes.
The new Claude Code Desktop: smoother parallel multitasking
A session sidebar, the /btw command, automatic sub-tasks and saved Environments — four changes that make multi-threaded work easier.
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