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33> Step-by-step guides for exploring codebases, fixing bugs, refactoring, testing, and other everyday tasks with Claude Code.
44 
5This page collects short recipes for everyday development. For higher-level guidance on prompting and context management, see [Best practices](/docs/en/best-practices).
5This page collects short recipes for everyday development. For higher-level guidance on prompting and context management, see [Best practices](/docs/en/best-practices.md).
66 
77This page covers:
88 
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1919 
2020### Understand new codebases
2121 
22For configuring Claude Code in a monorepo or large codebase, see [Monorepos and large repos](/docs/en/large-codebases).
22For configuring Claude Code in a monorepo or large codebase, see [Monorepos and large repos](/docs/en/large-codebases.md).
2323 
2424#### Get a quick codebase overview
2525 
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9595>
9696> * Be specific about what you're looking for
9797> * Use domain language from the project
98> * Install a [code intelligence plugin](/docs/en/plugins/code-intelligence) for your language to give Claude precise "go to definition" and "find references" navigation
98> * Install a [code intelligence plugin](/docs/en/plugins/code-intelligence.md) for your language to give Claude precise "go to definition" and "find references" navigation
9999 
100100***
101101 
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227227enhance the PR description with more context about the security improvements
228228```
229229 
230To find the session later, run `claude --from-pr 1234` with your own PR number, which opens the session picker filtered to sessions linked to that PR, or paste the PR URL into the [`/resume` picker](/docs/en/sessions#use-the-session-picker) search. Claude Code links the session to the PR when Claude creates it with `gh pr create` or `glab mr create`, and when Claude [works on an existing PR](/docs/en/agent-view#pull-request-status).
230To find the session later, run `claude --from-pr 1234` with your own PR number, which opens the session picker filtered to sessions linked to that PR, or paste the PR URL into the [`/resume` picker](/docs/en/sessions#use-the-session-picker) search. Claude Code links the session to the PR when Claude creates it with `gh pr create` or `glab mr create`, and when Claude [works on an existing PR](/docs/en/agent-view.md#pull-request-status).
231231 
232232> [!TIP]
233233>
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347347Explain the logic in @src/utils/auth.js
348348```
349349 
350This includes the content of the file in the conversation when it fits the [Read tool](/docs/en/tools-reference#read-tool-behavior)'s token limit, 25,000 tokens by default. A text file larger than 256KB isn't included.
350This includes the content of the file in the conversation when it fits the [Read tool](/docs/en/tools-reference.md#read-tool-behavior)'s token limit, 25,000 tokens by default. A text file larger than 256KB isn't included.
351351 
352352**2. Reference a directory**
353353 
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361361Show me the data from @github:repos/owner/repo/issues
362362```
363363 
364This fetches data from connected MCP servers using the format @server:resource. See [MCP resources](/docs/en/mcp#use-mcp-resources) for details.
364This fetches data from connected MCP servers using the format @server:resource. See [MCP resources](/docs/en/mcp.md#use-mcp-resources) for details.
365365 
366366> [!TIP]
367367>
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373373> * Directory references show file listings, not contents
374374> * You can reference multiple files in a single message (for example, "@file1.js and @file2.js")
375375 
376To stop `@` references from including file contents and directory listings, set [`CLAUDE_CODE_DISABLE_FILE_MENTIONS`](/docs/en/env-vars#variables) to `1` in your shell or in the [`env` block](/docs/en/env-vars#set-variables-in-settings-files) of user settings or [managed settings](/docs/en/managed-settings). Claude then receives the paths you referenced with a note to read them using its file tools. The variable requires Claude Code v2.1.299 or later, and Claude Code ignores it in project and local settings.
376To stop `@` references from including file contents and directory listings, set [`CLAUDE_CODE_DISABLE_FILE_MENTIONS`](/docs/en/env-vars#variables) to `1` in your shell or in the [`env` block](/docs/en/env-vars#set-variables-in-settings-files) of user settings or [managed settings](/docs/en/managed-settings.md). Claude then receives the paths you referenced with a note to read them using its file tools. The variable requires Claude Code v2.1.299 or later, and Claude Code ignores it in project and local settings.
377377 
378378Your [`PreToolUse` hooks](/docs/en/hooks#pretooluse) don't run when Claude Code includes a file you reference with `@`, because it makes no tool call. If you rely on those hooks to control what Claude reads, block specific paths or stop `@` references from including files:
379379 
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390390 
391391| Option | Where it runs | Best for |
392392| :- | :- | :- |
393| [Cloud scheduled tasks](/docs/en/routines) | Cloud, Anthropic-managed by default | Tasks that should run even when your computer is off. Can also trigger on API calls or GitHub events in addition to a schedule. Configure at [claude.ai/code/routines](https://claude.ai/code/routines). |
394| [Desktop scheduled tasks](/docs/en/desktop-scheduled-tasks) | Your machine, via the desktop app | Tasks that need direct access to local files, tools, or uncommitted changes. |
395| [GitHub Actions](/docs/en/github-actions) | Your CI pipeline | Tasks tied to repo events like opened PRs, or cron schedules that should live alongside your workflow config. |
393| [Cloud scheduled tasks](/docs/en/routines.md) | Cloud, Anthropic-managed by default | Tasks that should run even when your computer is off. Can also trigger on API calls or GitHub events in addition to a schedule. Configure at [claude.ai/code/routines](https://claude.ai/code/routines). |
394| [Desktop scheduled tasks](/docs/en/desktop-scheduled-tasks.md) | Your machine, via the desktop app | Tasks that need direct access to local files, tools, or uncommitted changes. |
395| [GitHub Actions](/docs/en/github-actions.md) | Your CI pipeline | Tasks tied to repo events like opened PRs, or cron schedules that should live alongside your workflow config. |
396396| [`/loop`](/docs/en/scheduled-tasks) | The current CLI session | Quick polling while a session is open. `--resume` and `--continue` restore unexpired fixed-interval loops. |
397397 
398398> [!TIP]
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452452claude --continue
453453```
454454 
455This resumes the most recent session in the current directory; if there isn't one yet, it prints `No conversation found to continue` and exits. Use `claude --resume` to choose from a list, or `/resume` from inside a running session. See [Manage sessions](/docs/en/sessions) for naming, branching, and the full picker reference.
455This resumes the most recent session in the current directory; if there isn't one yet, it prints `No conversation found to continue` and exits. Use `claude --resume` to choose from a list, or `/resume` from inside a running session. See [Manage sessions](/docs/en/sessions.md) for naming, branching, and the full picker reference.
456456 
457457## Run parallel sessions with worktrees
458458 
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462462claude --worktree feature-auth
463463```
464464 
465Run the same command with a different name in a second terminal to start an isolated parallel session. In a repository with no commits, the command fails with `Failed to resolve base branch "HEAD": git rev-parse failed`. See [Worktrees](/docs/en/worktrees) for cleanup, `.worktreeinclude`, and non-git VCS support. To monitor parallel sessions from one screen instead of separate terminals, see [background agents](/docs/en/agent-view).
465Run the same command with a different name in a second terminal to start an isolated parallel session. In a repository with no commits, the command fails with `Failed to resolve base branch "HEAD": git rev-parse failed`. See [Worktrees](/docs/en/worktrees.md) for cleanup, `.worktreeinclude`, and non-git VCS support. To monitor parallel sessions from one screen instead of separate terminals, see [background agents](/docs/en/agent-view.md).
466466 
467467## Plan before editing
468468 
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472472claude --permission-mode plan
473473```
474474 
475You can also press `Shift+Tab` mid-session until the status bar shows `⏸ plan mode on`. See [Plan mode](/docs/en/permission-modes#analyze-before-you-edit-with-plan-mode) for the approval flow and editing the plan in your text editor.
475You can also press `Shift+Tab` mid-session until the status bar shows `⏸ plan mode on`. See [Plan mode](/docs/en/permission-modes.md#analyze-before-you-edit-with-plan-mode) for the approval flow and editing the plan in your text editor.
476476 
477477## Delegate research to subagents
478478 
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482482use a subagent to investigate how our auth system handles token refresh
483483```
484484 
485The subagent reads files in its own context window and reports a summary. See [Subagents](/docs/en/sub-agents) for defining custom agents with their own tools and prompts.
485The subagent reads files in its own context window and reports a summary. See [Subagents](/docs/en/sub-agents.md) for defining custom agents with their own tools and prompts.
486486 
487487## Pipe Claude into scripts
488488 
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492492git log --oneline -20 | claude -p "summarize these recent commits"
493493```
494494 
495See [Non-interactive mode](/docs/en/headless) for output formats, permission flags, and fan-out patterns.
495See [Non-interactive mode](/docs/en/headless.md) for output formats, permission flags, and fan-out patterns.
496496 
497497## Next steps
498498 
499> **[Best practices](/docs/en/best-practices)**
499> **[Best practices](/docs/en/best-practices.md)**
500500>
501501> Patterns for getting the most out of Claude Code
502502 
503> **[Manage sessions](/docs/en/sessions)**
503> **[Manage sessions](/docs/en/sessions.md)**
504504>
505505> Resume, name, and branch conversations
506506 
507> **[Worktrees](/docs/en/worktrees)**
507> **[Worktrees](/docs/en/worktrees.md)**
508508>
509509> Run isolated parallel sessions
510510 
511> **[Extend Claude Code](/docs/en/features-overview)**
511> **[Extend Claude Code](/docs/en/features-overview.md)**
512512>
513513> Add skills, hooks, MCP, subagents, and plugins
514514 
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