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Manage costs effectively Claude Code CLI · in the page costs …-sonnet-4-6: 1.2k input, 5.3k output, 940.0k cache read, 50.0k cache write ($0.55) ``` These totals reset when `/clear` starts a new session, so the next session's total cost starts at \$0. Before v… Message your other Claude Code sessions Claude Code CLI · in the page cross-session-messaging …can send the answer across. A message is a piece of text one Claude writes to another, never the sender's conversation history or files. To move a whole conversation or its context, [resume the sess… Data usage Claude Code CLI · in the page data-usage …-in [Claude apps gateway](/docs/en/claude-apps-gateway) sessions, Yes writes the same payload to a local archive under `~/.claude/feedback-bundles/` instead of uploading; nothing leaves your machine u… Debug your configuration Claude Code CLI · in the page debug-your-config …file has grown long enough that individual rules get less attention. [Write effective instructions](/docs/en/memory.md#write-effective-instructions) covers the specificity, size, and structure pattern… Launch sessions from links Claude Code CLI · in the page deep-links …r the handler. You don't run a separate install command. Registration writes to user-level locations only: | Platform | Handler location | | - | - | | macOS | `~/Applications/Claude Code URL Handler.… Desktop application Claude Code CLI · in the page desktop …ssing **Enter** before you accept the suggestion doesn't send it. * **Write your own prompt**: start typing. The suggestion shows only while the prompt box is empty and has no attached files. Go to *… Schedule recurring tasks in Claude Code Desktop Claude Code CLI · in the page desktop-scheduled-tasks …der name on disk, so the name must be unique across your tasks. **4. Write the instructions** In the box below the name, enter what Claude should do when the task runs. **5. Turn on Only on this co… Development containers Claude Code CLI · in the page devcontainer …LAUDE_CONFIG_DIR`](/docs/en/env-vars) to the same path so Claude Code writes `.claude.json` inside the volume. The following example mounts the volume and sets `CLAUDE_CONFIG_DIR` for a container whos… Environment variables Claude Code CLI · in the page env-vars …ttings file `env` block, the settings file value applies. Claude Code writes each `env` entry into the process environment, replacing the value inherited from the shell. The [`env` setting](/docs/en/s… Error reference Claude Code CLI · in the page errors …session` | [Tool errors](#subagent-type-is-required) | | `Error: this write left the memory index at MEMORY.md at ..., over its ... read limit` | [Tool errors](#memory-index-is-over-its-read-limit) |… Extend Claude Code Claude Code CLI · in the page features-overview …ows](/docs/en/workflows.md)** run many subagents from a script Claude writes, returning one result * **[Cross-session messaging](/docs/en/cross-session-messaging.md)** lets Claude pass a message from… Fullscreen rendering Claude Code CLI · in the page fullscreen …CLAUDE_CODE_NO_FLICKER` from the relaunched process so the setting it writes takes effect. ### Fullscreen by default Attached [background sessions](/docs/en/agent-view.md) render fullscreen, and oth… Claude Code GitHub Actions Claude Code CLI · in the page github-actions …n relies on three of the app's permissions: * **Contents**: read and write, so Claude can modify repository files * **Issues**: read and write, so Claude can respond to issues * **Pull requests**: re… Use Claude Code GitHub Actions with cloud providers Claude Code CLI · in the page github-actions-cloud-providers …hem. Grant it three repository permissions: * **Contents**: read and write * **Issues**: read and write * **Pull requests**: read and write After registering the app, generate a private key and keep… Claude Code with GitHub Enterprise Server Claude Code CLI · in the page github-enterprise-server …rmission | Access | Used for | | :- | :- | :- | | Contents | Read and write | Cloning repositories and pushing branches | | Pull requests | Read and write | Creating PRs and posting review comments |… Claude Code GitLab CI/CD Claude Code CLI · in the page gitlab-ci-cd …rules. Claude Code enforces workspace-scoped permissions to constrain writes. Every change flows through an MR so reviewers see the diff and approvals still apply. Pick regional endpoints to reduce l… Glossary Claude Code CLI · in the page glossary …/). ## A ### AGENTS.md A markdown file of project instructions you write for AI coding agents. If your repository has one and no [CLAUDE.md](#claude-md), Claude reads it as your project instruction… Keep Claude working toward a goal Claude Code CLI · in the page goal …ecent reason, so you can see what Claude is working toward next. ### Write an effective condition The [evaluator](#how-evaluation-works) judges your condition against what Claude has surfaced in the… Claude Code on Google Cloud's Agent Platform Claude Code CLI · in the page google-vertex-ai …e model pin step starts from your currently pinned models. The wizard writes to `~/.claude/settings.json`, or to `$CLAUDE_CONFIG_DIR/settings.json` when [`CLAUDE_CONFIG_DIR`](/docs/en/env-vars#variabl… Run Claude Code programmatically Claude Code CLI · in the page headless …er command-line tool. This example pipes a build log into Claude and writes the explanation to a file: ```bash theme={null} cat build-error.txt | claude -p 'concisely explain the root cause of this… Hooks reference Claude Code CLI · in the page hooks …al surrounding whitespace | `Bash` matches only the Bash tool; `Edit\|Write` and `Edit, Write` each match either tool exactly; `code-reviewer` matches only that agent type | | Contains any other chara… Automate actions with hooks Claude Code CLI · in the page hooks-guide …{ "hooks": { "PostToolUse": [ { "matcher": "Edit|Write", "hooks": [{ "type": "command", "command": "jq -r '.tool_input.file_path' | xargs npx prettier --write" }] }… How Claude Code works Claude Code CLI · in the page how-claude-code-works …text Claude Code adds on its own If Claude follows a rule you didn't write, such as adding a `Co-Authored-By` trailer to a commit, the rule may have come from a [system reminder](/docs/en/glossary.md… Interactive mode Claude Code CLI · in the page interactive-mode …only, not in [fullscreen rendering](/docs/en/fullscreen.md) | | `[` | Write the full conversation to your terminal's native scrollback so `Cmd+F`, tmux copy mode, and other native tools can search it.… JetBrains IDEs Claude Code CLI · in the page jetbrains …a local attacker. Each IDE start generates a fresh random auth token, writes it to a lock file at `~/.claude/ide/<port>.lock`, and the CLI must present it as the `X-Claude-Code-Ide-Authorization` head… Customize keyboard shortcuts Claude Code CLI · in the page keybindings …`k` and `ctrl+K` is the same as `ctrl+k`. To bind Shift and a letter, write `shift+k`. ### Non-US keyboard layouts Write the key names of Ctrl shortcuts as Latin characters even when your active key… Set up Claude Code in a monorepo or large codebase Claude Code CLI · in the page large-codebases …v` before running anything. Tests and the dev server fail without it. Write database queries with the Knex query builder. Never put raw SQL strings in route handlers. Never edit a migration after it h… Connect Claude Code to an LLM gateway Claude Code CLI · in the page llm-gateway-connect …hen it saves a setting there; if you create it by hand or have Claude write it, add it to your gitignore yourself first so you don't accidentally commit your credential > [!WARNING] > > Don't put the… Claude Code gateway compatibility guide Claude Code CLI · in the page llm-gateway-protocol …can't parse it once a gateway converts it to server-sent events or rewrites that `Content-Type` header. [Streaming errors behind a gateway or proxy](/docs/en/amazon-bedrock.md#streaming-errors-behind… Control MCP server access for your organization Claude Code CLI · in the page managed-mcp …s`](#provide-servers-through-managed-settings). Any process that can write to a system path with administrator privileges can deploy the file. Across a fleet, that's usually through device management… Deploy managed settings Claude Code CLI · in the page managed-settings …oose a delivery mechanism](#choose-a-delivery-mechanism) first. **1. Write managed-settings.json** Write a `managed-settings.json` that holds the keys you've decided to enforce, in the same JSON sha… Connect Claude Code to tools via MCP Claude Code CLI · in the page mcp …e below to turn it into the command Claude Code accepts. Each command writes to [local scope](#local-scope) unless you add `--scope project` or `--scope user`. #### Add a server from a URL A URL mea… Connect to MCP servers Claude Code CLI · in the page mcp-quickstart …space free. ## Where servers are saved The `claude mcp add` command writes the server's details to a configuration file. By default it registers the server at `local` scope: private to you, active o… How Claude remembers your project Claude Code CLI · in the page memory …y knowledge across sessions: * **CLAUDE.md files**: instructions you write to give Claude persistent context. Claude can also read a repository's [`AGENTS.md` files](#agents-md) in place of CLAUDE.md… Claude Code on Microsoft Foundry Claude Code CLI · in the page microsoft-foundry …TL instead of the 5-minute default, set the following variable; cache writes with a 1-hour TTL are billed at a higher rate: ```bash theme={null} export ENABLE_PROMPT_CACHING_1H=1 ``` To set differen… Model configuration Claude Code CLI · in the page model-config …names the file. * **Claude Code couldn't save your choice.** `/model` writes `model` to `~/.claude/settings.json`. If you can't write to that file, for example because another tool generates it or lin… Monitoring Claude Code CLI · in the page monitoring-usage …rt Claude Code with `claude --debug-file <path>` and check the log it writes to that path. Claude Code reports failures from the exporters you configure as `[3P telemetry]` errors, where 3P means thir… Enterprise network configuration Claude Code CLI · in the page network-config …ten rotations**: when Claude Code re-reads while your rotation is mid-write, such as reading a certificate and key that don't match each other, it keeps the previous pair and re-reads on the next fail… Output styles Claude Code CLI · in the page output-styles …ormat with a built-in output style such as Concise or Explanatory, or write a custom style. An output style is a set of instructions that sets Claude's role, tone, and response format for every respo… Overview Claude Code CLI · in the page overview …encies, and writing release notes. > > ```bash theme={null} > claude "write tests for the auth module, run them, and fix any failures" > ``` > **Build features and fix bugs** > > Describe what you wa… Choose a permission mode Claude Code CLI · in the page permission-modes …mple `claude --permission-mode manual` or `"defaultMode": "manual"`. Writes to [protected paths](#protected-paths) are never auto-approved except in `bypassPermissions` mode and in plan-mode sessions… Configure permissions Claude Code CLI · in the page permissions …| Permanently per repository and command | | File modification | Edit/write files | Yes | Until session end | | Web fetch | WebFetch | Yes, except a built-in set of [preapproved documentation domains]… Test plugins with evals Claude Code CLI · in the page plugin-evals # Test plugins with evals > Write eval cases for your Claude Code plugin, run them with claude plugin eval, grade the results, compare against a no-plugin baseline, and gate CI on the score. The `cl… Recommend your plugin from your CLI Claude Code CLI · in the page plugins/cli-hints …. When your CLI detects that it's running inside Claude Code, have it write a one-line `<claude-code-hint />` tag to stderr. Claude Code removes the line from Bash and PowerShell tool output before th… Plugin commands reference Claude Code CLI · in the page plugins/cli-reference …user`, `project`, or `local`, and names the settings file the command writes to. `update` also takes `managed`. ### plugin init Scaffold a new plugin at `~/.claude/skills/<name>/`. Unless your admin… Code intelligence plugins Claude Code CLI · in the page plugins/code-intelligence …e servers, so Claude gets no diagnostics or code navigation there. To write your own language server plugin, or to connect a language server that has no plugin, see [LSP servers in plugin components](… Add components to a plugin Claude Code CLI · in the page plugins/components …same way and can also carry supporting files in its own directory, so write new ones as skills and keep `commands/` for files you already have. This file becomes `/my-plugin:about` and takes the same… Create a Claude Code plugin Claude Code CLI · in the page plugins/create …``bash theme={null} mkdir -p my-first-plugin/.claude-plugin ``` **2. Write the manifest** The [manifest](/docs/en/plugins/manifest-reference.md) is a JSON file named `plugin.json` that tells Claude… Create a marketplace Claude Code CLI · in the page plugins/create-marketplace …ect in `plugins` is a plugin entry and needs a `name` and a `source`. Write the entry's `source` as a path from the marketplace root. The root is `my-marketplace/`, the directory that contains `.claud… Host and maintain a marketplace Claude Code CLI · in the page plugins/host-marketplace …there once from your shell and commit the `.claude/settings.json` it writes. Claude Code then registers the marketplace for each teammate who [trusts the folder](/docs/en/plugins/org.md#require-plugi…