Boris Cherny's Claude Code Workflow Tips
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72 tips across 60 topics, sourced from Boris Cherny (creator of Claude Code) and the Claude Code team at Anthropic. All tips are contained in this file — do not fetch from the website. Remember: everyone's setup is different. Experiment to see what works for you!
Parts: The tips were shared across 9 threads:
- Part 1 (Jan 2, 2026, 13 tips): Sections 1–14 — parallel execution, web/mobile, Opus, CLAUDE.md, @.claude, plan mode, slash commands, subagents, hooks, permissions, MCP, long-running tasks, verification
- Part 2 (Jan 31, 2026, 10 tips): Sections 1, 3, 4, 5, 12, 10, 11, 6, 9, 15 — deeper dives on parallel work, plan mode, CLAUDE.md, skills, bug fixing, prompting, terminal setup, subagents, data/analytics, learning
- Part 3 (Feb 11, 2026, 12 tips): Sections 16–27 — terminal config, effort level, plugins, custom agents, permissions management, sandboxing, status line, keybindings, hooks (advanced), spinner verbs, output styles, customize everything
- Part 4 (Feb 20, 2026, 5 tips): Section 28 — built-in worktree support (CLI, Desktop, subagents, custom agents, non-git VCS)
- Part 5 (Feb 27, 2026, 2 tips): Sections 29–30 — /simplify and /batch
- Part 6 (Mar 7–10, 2026, 3 tips): Sections 31–33 — /loop for scheduled recurring tasks, code review agents, /btw for mid-task questions
- Part 7 (Mar 13, 2026, 8 tips): Sections 34–41 — /effort max, remote control sessions, voice mode, setup scripts, session naming, /color, PostCompact hook
- Part 8 (Mar 23–26, 2026, 4 tips): Sections 42–45 — auto mode, /schedule cloud jobs, iMessage plugin, auto-memory & auto-dream
- Part 9 (Mar 29, 2026, 15 tips): Sections 46–60 — mobile app, session teleporting, /loop & /schedule, hooks lifecycle, Cowork Dispatch, Chrome extension, Desktop app, fork sessions, /btw, git worktrees, /batch, --bare, --add-dir, --agent, /voice
1. Parallel Execution
Run Multiple Claude Sessions in Parallel
The single biggest productivity unlock. Spin up 3-5 git worktrees at once, each running its own Claude session.
# Create a worktree
git worktree add .claude/worktrees/my-worktree origin/main
# Start Claude in it
cd .claude/worktrees/my-worktree && claude
Why worktrees over checkouts: The Claude Code team prefers worktrees - it's why native support was built into the Claude Desktop app.
Pro tips:
- Name your worktrees and set up shell aliases (za, zb, zc) to hop between them in one keystroke
- Have a dedicated "analysis" worktree just for reading logs and running BigQuery
- Use iTerm2/terminal notifications to know when any Claude needs attention
- Color-code and name your terminal tabs, one per task/worktree
Web and Mobile Sessions
Beyond the terminal, run additional sessions on claude.ai/code. Use:
& command to background a session
--teleport flag to switch contexts between local and web
- Claude iOS app to start sessions on the go, pick them up on desktop later
2. Model Selection
Use Opus 4.5 with Thinking for Everything
Boris's reasoning: "It's the best coding model I've ever used, and even though it's bigger & slower than Sonnet, since you have to steer it less and it's better at tool use, it is almost always faster than using a smaller model in the end."
The math: Less steering + better tool use = faster overall results, even with a larger model.
3. Plan Mode
Start Every Complex Task in Plan Mode
Press shift+tab to cycle to plan mode. Pour your energy into the plan so Claude can 1-shot the implementation.
Workflow: Plan mode -> Refine plan -> Auto-accept edits -> Claude 1-shots it
Team patterns:
- One person has one Claude write the plan, then spins up a second Claude to review it as a staff engineer
- The moment something goes sideways, switch back to plan mode and re-plan
- Explicitly tell Claude to enter plan mode for verification steps, not just for the build
"A good plan is really important to avoid issues down the line."
4. CLAUDE.md Best Practices
Invest in Your CLAUDE.md
Share a single CLAUDE.md file for your repo, checked into git. The whole team should contribute.
Key practice: "Anytime we see Claude do something incorrectly we add it to the CLAUDE.md, so Claude knows not to do it next time."
After every correction: End with "Update your CLAUDE.md so you don't make that mistake again." Claude is eerily good at writing rules for itself.
Advanced: One engineer tells Claude to maintain a notes directory for every task/project, updated after every PR. They then point CLAUDE.md at it.
@.claude in Code Reviews
Tag @.claude on PRs to add learnings to the CLAUDE.md as part of the PR itself. Use the Claude Code GitHub Action (/install-github-action) for this.
Example PR comment:
nit: use a string literal, not ts enum
@claude add to CLAUDE.md to never use enums,
always prefer literal unions
This is "Compounding Engineering" - Claude automatically updates the CLAUDE.md with the learning.
5. Skills & Slash Commands
Create Your Own Skills
Create skills and commit them to git. Reuse across every project.
Team tips:
- If you do something more than once a day, turn it into a skill or command
- Build a
/techdebt slash command and run it at the end of every session to find and kill duplicated code
- Set up a slash command that syncs 7 days of Slack, GDrive, Asana, and GitHub into one context dump
- Build analytics-engineer-style agents that write dbt models, review code, and test changes in dev
Slash Commands for Inner Loops
Use slash commands for workflows you do many times a day. Commands are checked into git under .claude/commands/ and shared with the team.
> /commit-push-pr
Power feature: Slash commands can include inline Bash to pre-compute info (like git status) for quick execution without extra model calls.
6. Subagents
Use Subagents for Common Workflows
Think of subagents as automations for the most common PR workflows:
.claude/
agents/
build-validator.md
code-architect.md
code-simplifier.md
oncall-guide.md
verify-app.md
Examples:
code-simplifier - Cleans up code after Claude finishes
verify-app - Detailed instructions for end-to-end testing
Leveraging Subagents
- Append "use subagents" to any request where you want Claude to throw more compute at the problem
- Offload individual tasks to subagents to keep your main agent's context window clean and focused
- Route permission requests to Opus 4.5 via a hook - let it scan for attacks and auto-approve the safe ones
7. Hooks
PostToolUse Hooks for Formatting
Use a PostToolUse hook to auto-format Claude's code. While Claude generates well-formatted code 90% of the time, the hook catches edge cases to prevent CI failures.
"PostToolUse": [
{
"matcher": "Write|Edit",
"hooks": [
{
"type": "command",
"command": "bun run format || true"
}
]
}
]
Stop Hooks for Long-Running Tasks
For very long-running tasks, use an agent Stop hook for deterministic checks, ensuring Claude can work uninterrupted.
8. Permissions
Pre-Allow Safe Permissions
Instead of --dangerously-skip-permissions, use /permissions to pre-allow common safe commands. Most are shared in .claude/settings.json.
For sandboxed environments, use --permission-mode=dontAsk or --dangerously-skip-permissions to avoid blocks.
9. MCP Integrations
Tool Integrations
Claude Code uses your tools autonomously:
- Searches and posts to Slack (via MCP server)
- Runs BigQuery queries with bq CLI
- Grabs error logs from Sentry
{
"mcpServers": {
"slack": {
"type": "http",
"url": "https://slack.mcp.anthropic.com/mcp"
}
}
}
Data & Analytics
Ask Claude Code to use the "bq" CLI to pull and analyze metrics on the fly. Have a BigQuery skill checked into the codebase.
Boris's take: "Personally, I haven't written a line of SQL in 6+ months."
This works for any database that has a CLI, MCP, or API.
10. Prompting Tips
Challenge Claude
- Say "Grill me on these changes and don't make a PR until I pass your test."
- Say "Prove to me this works" and have Claude diff behavior between main and your feature branch
After a Mediocre Fix
Say: "Knowing everything you know now, scrap this and implement the elegant solution."
Write Detailed Specs
Reduce ambiguity before handing work off. The more specific you are, the better the output.
Key insight: Don't accept the first solution. Push Claude to do better - it usually can.
11. Terminal Setup
Recommended Tools
- Ghostty terminal - synchronized rendering, 24-bit color, proper unicode support
- Use
/statusline to customize your status bar to always show context usage and current git branch
Voice Dictation
Use voice dictation! You speak 3x faster than you type, and your prompts get way more detailed as a result. Hit fn x2 on macOS.
12. Bug Fixing
Let Claude Fix Bugs
Enable the Slack MCP, then paste a Slack bug thread into Claude and just say "fix." Zero context switching required.
Or just say "Go fix the failing CI tests." Don't micromanage how.
Pro tip: Point Claude at docker logs to troubleshoot distributed systems - it's surprisingly capable at this.
13. Long-Running Tasks
Handle Long-Running Tasks
For very long-running tasks, ensure Claude can work uninterrupted:
Options:
- (a) Prompt Claude to verify with a background agent when done
- (b) Use an agent Stop hook for deterministic checks
- (c) Use the "ralph-wiggum" plugin (community idea by @GeoffreyHuntley)
For sandboxed environments, use --permission-mode=dontAsk or --dangerously-skip-permissions to avoid blocks.
14. Verification (The #1 Tip)
Give Claude a Way to Verify Its Work
"Probably the most important thing to get great results out of Claude Code - give Claude a way to verify its work. If Claude has that feedback loop, it will 2-3x the quality of the final result."
Verification varies by domain:
- Bash commands
- Test suites
- Simulators
- Browser testing (Claude Chrome extension)
The key is giving Claude a way to close the feedback loop. Invest in domain-specific verification for optimal performance.
15. Learning with Claude
Use Claude for Learning
- Enable "Explanatory" or "Learning" output style in /config to have Claude explain the why behind changes
- Have Claude generate visual HTML presentations explaining unfamiliar code
- Ask Claude to draw ASCII diagrams of new protocols and codebases
- Build a spaced-repetition learning skill: explain your understanding, Claude asks follow-ups to fill gaps
Key takeaway: Claude Code isn't just for writing code - it's a powerful learning tool when you configure it to explain and teach.
16. Terminal Configuration
Configure Your Terminal
A few quick settings to make Claude Code feel right:
- Theme: Run
/config to set light/dark mode
- Notifications: Enable notifications for iTerm2, or use a custom notifs hook
- Newlines: If you use Claude Code in an IDE terminal, Apple Terminal, Warp, or Alacritty, run
/terminal-setup to enable shift+enter for newlines (so you don't need to type \)
- Vim mode: Run
/vim
17. Effort Level
Adjust Effort Level
Run /model to pick your preferred effort level:
- Low — less tokens & faster responses
- Medium — balanced behavior
- High — more tokens & more intelligence
Boris uses High for everything.
18. Plugins
Install Plugins, MCPs, and Skills
Plugins let you install LSPs (now available for every major language), MCPs, skills, agents, and custom hooks.
Install a plugin from the official Anthropic plugin marketplace, or create your own marketplace for your company. Then, check the settings.json into your codebase to auto-add the marketplaces for your team.
Run /plugin to get started.
19. Custom Agents
Create Custom Agents
Drop .md files in .claude/agents. Each agent can have a custom name, color, tool set, pre-allowed and pre-disallowed tools, permission mode, and model.
Little-known feature: Set the default agent used for the main conversation. Just set the "agent" field in your settings.json or use the --agent flag.
Run /agents to get started.
20. Permissions Management
Pre-Approve Common Permissions
Claude Code uses a sophisticated permission system with prompt injection detection, static analysis, sandboxing, and human oversight.
Out of the box, we pre-approve a small set of safe commands. To pre-approve more, run /permissions and add to the allow and block lists. Check these into your team's settings.json.
Wildcard syntax: We support full wildcard syntax. Try "Bash(bun run *)" or "Edit(/docs/**)".
21. Sandboxing
Enable Sandboxing
Opt into Claude Code's open source sandbox runtime to improve safety while reducing permission prompts.
Run /sandbox to enable it. Sandboxing runs on your machine, and supports both file and network isolation.
Modes:
- Sandbox BashTool, with auto-allow
- Sandbox BashTool, with regular permissions
- No Sandbox
22. Status Line
Add a Status Line
Custom status lines show up right below the composer. Show model, directory, remaining context, cost, and anything else you want to see while you work.
Everyone on the Claude Code team has a different statusline. Use /statusline to get started — Claude will generate one based on your .bashrc/.zshrc.
23. Keybindings
Customize Your Keybindings
Every key binding in Claude Code is customizable. Run /keybindings to re-map any key. Settings live reload so you can see how it feels immediately.
Keybindings are stored in ~/.claude/keybindings.json.
24. Hooks (Advanced)
Set Up Hooks
Hooks are a way to deterministically hook into Claude's lifecycle. Use them to:
- Automatically route permission requests to Slack or Opus
- Nudge Claude to keep going when it reaches the end of a turn (you can even kick off an agent or use a prompt to decide whether Claude should keep going)
- Pre-process or post-process tool calls, e.g. to add your own logging
Ask Claude to add a hook to get started.
25. Spinner Verbs
Customize Your Spinner Verbs
It's the little things that make CC feel personal. Ask Claude to customize your spinner verbs to add or replace the default list with your own verbs.
Check the settings.json into source control to share verbs with your team.
26. Output Styles
Use Output Styles
Run /config and set an output style to have Claude respond using a different tone or format.
- Explanatory — great when getting familiar with a new codebase, to have Claude explain frameworks and code patterns as it works
- Learning — have Claude coach you through making code changes
- Custom — create your own output styles to adjust Claude's voice the way you like
27. Customize Everything
Customize All the Things!
Claude Code is built to work great out of the box. When you do customize, check your settings.json into git so your team can benefit, too.
We support configuring for your codebase, for a sub-folder, for just yourself, or via enterprise-wide policies.
By the numbers: 37 settings and 84 env vars. Use the "env" field in your settings.json to avoid wrapper scripts.
28. Built-in Git Worktree Support
Use claude --worktree for Isolation
Claude Code now has built-in git worktree support. Each agent gets its own worktree and can work independently, without interfering with other sessions.
# Start Claude in its own worktree
claude --worktree my_worktree
# Optionally launch in its own Tmux session too
claude --worktree my_worktree --tmux
Desktop app: Head to the Code tab in the Claude Desktop app and check the worktree checkbox.
Subagents Support Worktrees
Subagents can also use worktree isolation to do more work in parallel. This is especially powerful for large batched changes and code migrations. Available in CLI, Desktop app, IDE extensions, web, and Claude Code mobile app.
Example prompt: "Migrate all sync io to async. Batch up the changes, and launch 10 parallel agents with worktree isolation. Make sure each agent tests its changes end to end, then have it put up a PR."
Custom Agents with Worktree Isolation
Make subagents always run in their own worktree by adding isolation: worktree to your agent frontmatter:
# .claude/agents/worktree-worker.md
---
name: worktree-worker
model: haiku
isolation: worktree
---
Non-Git Source Control
Mercurial, Perforce, or SVN users can define WorktreeCreate and WorktreeRemove hooks in settings.json to benefit from isolation without Git.
29. /simplify — Improve Code Quality
Use parallel agents to improve code quality, tune code efficiency, and ensure CLAUDE.md compliance. Append /simplify to any prompt after making changes.
> hey claude make this code change then run /simplify
Boris uses this daily to shepherd PRs to production. The skill runs parallel agents that review changed code for reuse, quality, and efficiency — all in one pass.
30. /batch — Parallel Code Migrations
Interactively plan out code migrations, then execute in parallel using dozens of agents. Each agent runs with full isolation using git worktrees, testing its work before putting up a PR.
> /batch migrate src/ from Solid to React
You plan the migration interactively, then /batch fans out the work to parallel agents — each in its own worktree, each testing and creating a PR independently.
31. /loop — Schedule Recurring Tasks
Use /loop to schedule recurring tasks for up to 3 days at a time. Claude runs your prompt on an interval, handling long-running workflows autonomously.
> /loop babysit all my PRs. Auto-fix build issues and when comments come in, use a worktree agent to fix them
> /loop every morning use the Slack MCP to give me a summary of top posts I was tagged in
Use it for PR babysitting, Slack summaries, deploy monitoring, or any repeating workflow.
Learn more: https://code.claude.com/docs/en/scheduled-tasks
32. Code Review — Agents Hunt for Bugs
When a PR opens, Claude dispatches a team of agents to hunt for bugs. Anthropic built it for themselves first — code output per engineer is up 200% this year, and reviews were the bottleneck.
Each agent focuses on a different concern — logic errors, security issues, performance regressions — then posts inline comments directly on the PR. Boris personally used it for weeks before launch; it catches real bugs he wouldn't have noticed otherwise.
Source: https://x.com/bcherny/status/2031089411820228645
33. /btw — Ask Questions While Claude Works
A slash command for side-chain conversations while Claude is actively working. Single-turn, no tool calls, but has full context of the conversation.
> /btw what does the retry logic do?
Claude responds inline without stopping its work. Built by @ErikSchluntz as a side project — 1.5M views on the launch tweet.
Source: https://x.com/trq212/status/2031506296697131352
34. /effort — Max Reasoning Mode
Set effort to 'max' and Claude reasons for longer, using as many tokens as needed. Burns through usage limits faster, so you activate it per session.
> /effort max
Four levels: low, medium (default), high, max. Use 'max' for hard debugging, architecture decisions, or tricky code where you want Claude to really think it through.
Source: https://x.com/trq212/status/2032632596572811575
35. Remote Control — Spawn New Sessions
Run claude remote-control and spawn a new local session from the mobile app. Available on Max, Team, and Enterprise (v2.1.74+).
$ claude remote-control
# Open Claude mobile app → tap "Code" → start new session
Walk away from your desk, think of something, kick off a task from mobile — Claude runs on your machine.
Source: https://x.com/trq212/status/2032632597843779861
36. Voice Mode
Voice mode is now rolled out to 100% of users, including Claude Code Desktop and Cowork. Click the microphone icon and talk naturally.
Useful for hands-free coding, dictating complex requirements, or when you think faster than you type.
Source: https://x.com/trq212/status/2032632599429136753
37. Setup Scripts for Cloud Environments
Add a setup script in Claude Code on web and desktop. It runs before Claude Code launches on a cloud environment — install dependencies, configure settings, set env vars.
# Setup script (runs on new session start, skipped on resume):
#!/bin/bash
yarn install
Particularly useful for installing dependencies, settings, and configs before Claude starts working.
Source: https://x.com/trq212/status/2032632601064907037
38. claude --name — Name Your Sessions
Name your session at launch with the --name flag.
$ claude --name "auth-refactor"
Especially useful when juggling multiple worktrees or sessions — you can tell at a glance which session is doing what.
Source: https://x.com/trq212/status/2032632602629386348
39. Auto Session Naming After Plan Mode
After plan mode, Claude automatically names your session based on what you're working on. No manual naming needed.
Pairs well with claude --name — use --name when you know what you're doing upfront, let auto-naming handle it when you start by planning.
Source: https://x.com/trq212/status/2032632602629386348
40. /color — Customize Prompt Color
Change the color of the prompt input with /color. When you have 3-5 sessions open in different terminals, color-coding them makes it instantly clear which is which.
> /color
Source: https://x.com/trq212/status/2032632602629386348
41. PostCompact Hook
A new hook event that fires after Claude compresses its conversation context. Use it to re-inject critical instructions that might get lost during compaction, log when compaction happens, or trigger automation.
"hooks": {
"PostCompact": [{
"matcher": "",
"hooks": [{ "type": "command", "command": "echo 'Context was compacted'" }]
}]
}
Source: https://x.com/trq212/status/2032632602629386348
42. Auto Mode — Safer Permission Skipping
Instead of approving every file write and bash command, or skipping permissions entirely, auto mode lets Claude make permission decisions on your behalf. Classifiers evaluate each action before it runs — safe operations get auto-approved, risky ones still get flagged.
# Enable auto mode
claude --enable-auto-mode
# Or cycle with shift+tab during a session:
# plan mode → auto mode → normal mode
Boris's take: "no 👏 more 👏 permission prompts 👏"
Source: https://x.com/bcherny/status/2036555259997462541
43. /schedule — Cloud Jobs from Your Terminal
Use /schedule to create recurring cloud-based jobs for Claude, directly from the terminal. Unlike /loop (which runs locally for up to 3 days), scheduled jobs run in the cloud — they work even when your laptop is closed.
> /schedule a daily job that looks at all PRs shipped since yesterday
and update our docs based on the changes. Use the Slack MCP to
message #docs-update with the changes
The Anthropic team uses these internally to automatically resolve CI failures, push doc updates, and power automations that need to exist beyond a closed laptop.
Source: https://x.com/noahzweben/status/2036129220959805859
44. iMessage Plugin — Text Claude from Your Phone
iMessage is now available as a Claude Code channel. Install the plugin and text Claude like you'd text a friend — from any Apple device.
/plugin install imessage@claude-plugins-official
Claude Code becomes a contact in your Messages app. Send it tasks, get responses as iMessages. Works from your iPhone, iPad, or Mac — no terminal needed. Pairs well with remote control sessions for kicking off work from anywhere.
Source: https://x.com/trq212/status/2036959638646866021
45. Auto-Memory & Auto-Dream — Persistent, Self-Cleaning Memory
Claude Code has a built-in memory system. Run /memory to configure it.
Auto-memory: When enabled, Claude automatically saves preferences, corrections, and patterns between sessions. User memory goes to ~/.claude/CLAUDE.md, project memory to ./CLAUDE.md.
Auto-dream: As memory accumulates, it can get messy — outdated assumptions, overlapping notes, low-signal entries. Auto-dream runs a subagent that periodically reviews past sessions, keeps what matters, removes what doesn't, and merges insights into cleaner structured memory. Run /dream to trigger manually, or enable auto-dream in /memory settings.
The naming maps to how REM sleep consolidates short-term memory into long-term storage.
46. Mobile App — Code from Your Phone
Claude Code has a mobile app. Download the Claude app for iOS/Android, then tap the Code tab on the left. Boris writes a lot of his code from the iOS app — it's a convenient way to make changes without opening a laptop.
Source: https://x.com/bcherny/status/2038454337811386436
47. Session Teleporting — Move Between Devices
Move sessions back and forth between mobile/web/desktop and terminal.
# Continue a cloud session on your machine
claude --teleport
# or /teleport from inside a session
# Control a local session from phone/web
/remote-control
Boris has "Enable Remote Control for all sessions" set in his /config.
Source: https://x.com/bcherny/status/2038454339933548804
48. /loop and /schedule — Automated Workflows
Two of the most powerful features in Claude Code. Use these to schedule Claude to run automatically at a set interval, for up to a week at a time.
Boris's running loops:
/loop 5m /babysit — auto-address code review, auto-rebase, and shepherd PRs to production
/loop 30m /slack-feedback — automatically put up PRs for Slack feedback every 30 mins
/loop /post-merge-sweeper — put up PRs to address code review comments I missed
/loop 1h /pr-pruner — close out stale and no longer necessary PRs
Pro tip: Experiment with turning workflows into skills + loops. It's powerful.
Source: https://x.com/bcherny/status/2038454341884154269
49. Hooks — Deterministic Agent Lifecycle Logic
Use hooks to deterministically run logic as part of the agent lifecycle:
- Dynamically load in context each time you start Claude (SessionStart)
- Log every bash command the model runs (PreToolUse)
- Route permission prompts to WhatsApp for you to approve/deny (PermissionRequest)
- Poke Claude to keep going whenever it stops (Stop)
See https://code.claude.com/docs/en/hooks
Source: https://x.com/bcherny/status/2038454343519932844
50. Cowork Dispatch — Remote Control for Claude Desktop
Boris uses Dispatch every day to catch up on Slack and emails, manage files, and do things on his laptop when he's not at a computer. "When I'm not coding, I'm dispatching."
Dispatch is a secure remote control for the Claude Desktop app. It can use your MCPs, browser, and computer, with your permission.
Source: https://x.com/bcherny/status/2038454345419936040
51. Chrome Extension — Verify Frontend Work
The most important tip for using Claude Code: give Claude a way to verify its output. Once you do that, Claude will iterate until the result is great.
Think of it like any other engineer: if you ask someone to build a website but they aren't allowed to use a browser, will the result look good? Probably not. But if you give them a browser, they will write code and iterate until it looks good.
Boris uses the Chrome extension every time he works on web code. It tends to work more reliably than other similar MCPs. Download for Chrome/Edge at code.claude.com/docs/en/browser.
Source: https://x.com/bcherny/status/2038454347156398333
52. Desktop App — Auto Start and Test Web Servers
Use the Claude Desktop app to have Claude automatically start and test web servers. The Desktop app bundles in the ability for Claude to automatically run your web server and even test it in a built-in browser.
You can set up something similar in CLI or VSCode using the Chrome extension, or just use the Desktop app.
Source: https://x.com/bcherny/status/2038454348804714642
53. Fork Your Session
People often ask how to fork an existing session. Two ways:
# Option 1: From inside your session
/branch
# Option 2: From the CLI
claude --resume <session-id> --fork-session
Source: https://x.com/bcherny/status/2038454350214041740
54. /btw — Side Queries While Claude Works
Use /btw all the time to answer quick questions while the agent works. Single-turn, no tool calls, but has full context of the conversation. Claude responds inline without stopping its work.
> /btw how do i spell daushund?
dachshund — German for "badger dog" (dachs = badger, hund = dog).
Source: https://x.com/bcherny/status/2038454351849787485
55. Git Worktrees — Deep Parallel Work
Claude Code ships with deep support for git worktrees. Worktrees are essential for doing lots of parallel work in the same repository. Boris has dozens of Claudes running at all times.
# Start a new session in a worktree
claude -w
# Or check the "worktree" checkbox in the Claude Desktop app
For non-git VCS users, use the WorktreeCreate hook to add your own logic for worktree creation.
Source: https://x.com/bcherny/status/2038454353787519164
56. /batch — Fan Out Massive Changesets
/batch interviews you, then has Claude fan out the work to as many worktree agents as it takes (dozens, hundreds, even thousands) to get it done. Use it for large code migrations and other kinds of parallelizable work.
Source: https://x.com/bcherny/status/2038454355469484142
57. --bare — 10x Faster SDK Startup
By default, when you run claude -p (or the TypeScript or Python SDKs) it searches for local CLAUDE.md's, settings, and MCPs. But for non-interactive usage, most of the time you want to explicitly specify what to load via --system-prompt, --mcp-config, --settings, etc.
claude -p "summarize this codebase" \
--output-format=stream-json \
--verbose \
--bare
This was a design oversight when the SDK was first built. In a future version, the default will flip to --bare. For now, opt in with the flag.
Source: https://x.com/bcherny/status/2038454357088457168
58. --add-dir — Give Claude Access to More Folders
When working across multiple repositories, start Claude in one repo and use --add-dir (or /add-dir) to let Claude see the other repo. This not only tells Claude about the repo, but also gives it permissions to work in it.
# At launch
claude --add-dir /path/to/other-repo
# During a session
> /add-dir /path/to/other-repo
Or, add "additionalDirectories" to your team's settings.json to always load in additional folders when starting Claude Code.
Source: https://x.com/bcherny/status/2038454359047156203
59. --agent — Custom System Prompt & Tools
Custom agents are a powerful primitive that often gets overlooked. Define a new agent in .claude/agents, then run claude --agent=<your agent's name>.
# .claude/agents/ReadOnly.md
---
name: ReadOnly
description: Read-only agent restricted to the Read tool only
color: blue
tools: Read
---
You are a read-only agent that cannot edit files or run bash.
See https://code.claude.com/docs/en/sub-agents
Source: https://x.com/bcherny/status/2038454360418787764
60. /voice — Voice Input
Boris does most of his coding by speaking to Claude, rather than typing. To do the same:
- CLI: run /voice then hold the space bar
- Desktop: press the voice button
- iOS: enable dictation in your iOS settings
Source: https://x.com/bcherny/status/2038454362226467112
Quick Reference
| Tip | Key Action |
|---|
| Parallel work | Use git worktrees, 3-5 sessions |
| Model | Opus with thinking |
| Planning | Start in plan mode for complex tasks |
| CLAUDE.md | Update after every correction |
| Skills | /simplify, /batch, /btw, custom workflows |
| Subagents | Offload to keep context clean |
| Hooks | PostToolUse, SessionStart, PermissionRequest, Stop |
| Permissions | Pre-allow safe commands, wildcards |
| MCP | Integrate Slack, BigQuery, Sentry |
| Long-running | Use Stop hooks, background agents |
| Verification | Chrome extension, browser testing |
| Learning | Use Claude to explain and teach |
| Terminal | /config, /voice, /color, keybindings |
| Effort | /effort max for deeper thinking |
| Plugins & Agents | LSPs, MCPs, --agent, custom agents |
| Sandboxing | /sandbox for file & network isolation |
| Status line | /statusline for custom info display |
| Customize | Spinners, output styles, 37 settings, 84 env vars |
| Worktrees | claude -w, Desktop, subagent isolation, non-git VCS |
| Scheduled Tasks | /loop, /schedule, automated workflows |
| Code Review | Agent-powered PR reviews that catch real bugs |
| Remote Control | Teleport, mobile app, /remote-control |
| Session Management | --name, /branch, --fork-session, auto-naming |
| Setup Scripts | Automate cloud environment setup |
| PostCompact | Hook for context compression events |
| Auto Mode | Safer permission skipping with classifiers |
| iMessage | Text Claude from any Apple device |
| Auto-Memory & Dream | Persistent, self-cleaning memory system |
| Mobile App | Code from iOS/Android Claude app |
| Cowork Dispatch | Remote control for Claude Desktop |
| Desktop App | Auto start and test web servers |
| --bare | 10x faster SDK startup |
| --add-dir | Give Claude access to more folders |
Source: howborisusesclaudecode.com - Tips from Boris Cherny's January–March 2026 threads