888 pages for tools.

Catch security issues as Claude writes code Claude Code CLI · in the page security-guidance …han changes Claude is writing, see [How this fits with other security tools](#how-this-fits-with-other-security-tools). ## Prerequisites * Python 3.7 or later on your `PATH`. The agentic commit revi… Customize sessions in self-hosted environments Claude Code CLI · in the page self-hosted-environments-configuration …ns, start a session on the environment and ask Claude to list its MCP tools; the runner also logs a startup warning for any captured entry whose `type` it doesn't recognize and drops the entry, so you… Deploy self-hosted environments to production Claude Code CLI · in the page self-hosted-environments-deploy …### Connector traffic leaves your network Anthropic calls connector tools from its own infrastructure rather than from your runner. Connector tools are the claude.ai connectors, such as GitHub, Slac… Test self-hosted environments end to end Claude Code CLI · in the page self-hosted-environments-testing …moke test that verifies your runner image, git access, and any custom tools before you promote a change. This recipe assumes you've already [set up an environment and a runner](/docs/en/self-hosted-e… Configure server-managed settings Claude Code CLI · in the page server-managed-settings …Claude Code still checks [permissions](/docs/en/permissions) for the tools Claude uses while following those instructions. Before v2.1.260, a `claudeMd` value required approval too. #### Approval me… Manage sessions Claude Code CLI · in the page sessions …find the agent in either place, the session resumes with the default tools and shows a [warning naming the agent](/docs/en/errors#session-agent-no-longer-available). * Permission mode: if you resume… Claude Code settings Claude Code CLI · in the page settings …Personal preferences you want everywhere (themes, editor settings) * Tools and plugins you use across all projects * API keys and authentication (stored securely) **Project scope** is best for: * T… Example settings files Claude Code CLI · in the page settings-example …rmissions#bash-rule-limits). `Read(./.env)` on its own stops the file tools and commands that name the file, such as `cat .env`, but not [`grep -r` run over the directory](/docs/en/permissions#read-an… All settings Claude Code CLI · in the page settings-reference …y session as a named [subagent](/docs/en/sub-agents) with its prompt, tools, and model | Agents, sessions, and worktrees | Any file | | [`agentPushNotifEnabled`](#agentpushnotifenabled) | Let Claude s… Advanced setup Claude Code CLI · in the page setup …nloads/win) is optional | Not supported | Windows-native projects and tools | | WSL 2 | WSL 2 enabled | Supported | Linux toolchains or sandboxed command execution | | WSL 1 | WSL 1 enabled | Not supp… Extend Claude with skills Claude Code CLI · in the page skills …https://agentskills.io) open standard, which works across multiple AI tools. Claude Code extends the standard with additional features like [invocation control](#control-who-invokes-a-skill), [subagen… Customize your status line Claude Code CLI · in the page statusline …_miss_at": 1738425230, "last_miss_cause": { "causes": ["tools_changed"], "tools_added": 2, "tools_removed": 0 }, "miss_causes": { "tools_changed": 2… Create custom subagents Claude Code CLI · in the page sub-agents …of your main conversation * **Enforce constraints** by limiting which tools a subagent can use * **Reuse configurations** across projects with user-level subagents * **Specialize behavior** with focus… Enterprise deployment overview Claude Code CLI · in the page third-party-integrations …or Teams** is self-service and includes collaboration features, admin tools, SSO, billing management, and [server-managed settings](/docs/en/server-managed-settings) for organization-wide Claude Code… Troubleshoot installation and login Claude Code CLI · in the page troubleshoot-install …Windows is optional. Claude Code uses the [PowerShell tool](/docs/en/tools-reference#powershell-tool) when Git Bash is absent, so this error means neither shell was found. **If PowerShell is missing… Troubleshooting Claude Code CLI · in the page troubleshooting …ys most memory is JS heap, open the `.heapsnapshot` file in Chrome DevTools under Memory → Load and sort by retained size to see what's holding the memory If the summary says most memory is native, t… Use Claude Code in VS Code Claude Code CLI · in the page vs-code …The map also lists the session's other [background tasks](/docs/en/tools-reference#background-commands), such as background shell commands and [monitors](/docs/en/tools-reference#monitor-tool), bel… Get started with Claude Code in the cloud Claude Code CLI · in the page web-quickstart …nted without a local checkout For work that needs your local config, tools, or environment, running Claude Code locally or using [Remote Control](/docs/en/remote-control) is a better fit. ## How ses… Week 13 · March 23–27, 2026 Claude Code CLI · in the page whats-new/2026-w13 …r the things nothing else can reach: apps without an API, proprietary tools, anything that only exists as a GUI.</p> <Frame> <img src="https://mintcdn.com/claude-code/CfffsX01JHFnIKvD/images/wh… Week 14 · March 30 – April 3, 2026 Claude Code CLI · in the page whats-new/2026-w14 …-only apps didn't. Now they do. Best for closing the loop on apps and tools where there's no API to call. Still early; expect rough edges.</p> <Frame> <video autoPlay muted loop playsInline cla… Week 15 · April 6–10, 2026 Claude Code CLI · in the page whats-new/2026-w15 …I on my PR ``` <a className="digest-feature-link" href="/docs/en/tools-reference#monitor-tool">Monitor tool reference</a> </div> <div className="digest-feature"> <div className="digest-feature… Week 17 · April 20–24, 2026 Claude Code CLI · in the page whats-new/2026-w17 …h operators and visual feedback</div> <div>Hooks can now call MCP tools directly via <a href="/docs/en/hooks#mcp-tool-hook-fields"><code>type: "mcp\_tool"</code></a>, so a hook can hit an already-… Week 18 · April 27 – May 1, 2026 Claude Code CLI · in the page whats-new/2026-w18 …<code>alwaysLoad: true</code> in their config so all of that server's tools are always available</div> <div>New <code>claude plugin prune</code> removes orphaned auto-installed plugin dependencies… Week 19 · May 4–8, 2026 Claude Code CLI · in the page whats-new/2026-w19 …l count for connected servers and flags servers that connected with 0 tools</div> <div>`--channels` now works with console (API key) authentication</div> <div>Subprocesses such as Bash, hooks,… Week 22 · May 25–29, 2026 Claude Code CLI · in the page whats-new/2026-w22 …e session</div> <div>Skills and commands can set <code>disallowed-tools</code> in frontmatter to remove tools from the model while the skill is active</div> <div>New <code>MessageDisplay</code… Week 23 · June 1–5, 2026 Claude Code CLI · in the page whats-new/2026-w23 …n</div> <div>Listing <code>Grep</code> or <code>Glob</code> in `--tools` now provides the dedicated search tools on native builds with embedded search, instead of silently ignoring those names</di… Week 24 · June 8–12, 2026 Claude Code CLI · in the page whats-new/2026-w24 …nds and agents do not load. Authentication, model selection, built-in tools, and permissions still work. If a problem disappears in safe mode, one of those surfaces is the cause.</p> <p className="… Week 27 · June 29 – July 3, 2026 Claude Code CLI · in the page whats-new/2026-w27 …ng-matching; use <code>mcp\_\_brave-search\_\_.\*</code> to match all tools from a hyphenated MCP server</div> <div>Transient server rate-limit errors unrelated to your usage limit are now retried… Week 33 · August 10–14, 2026 Claude Code CLI · in the page whats-new/2026-w33 …hout a restart</div> <div>On Linux and WSL, set <a href="/docs/en/tools-reference#memory-limit-on-linux-and-wsl"><code>CLAUDE\_CODE\_TOOL\_MEMORY\_LIMIT</code></a> to a size such as <code>4G</code… Week 35 · August 24–28, 2026 Claude Code CLI · in the page whats-new/2026-w35 …nfig</code>.</p> <a className="digest-feature-link" href="/docs/en/tools-reference#sendfeedback-tool-behavior">SendFeedback tool behavior</a> </div> <div className="digest-feature"> <div classNa… Week 37 · September 7–11, 2026 Claude Code CLI · in the page whats-new/2026-w37 …'t finished downloading a page within five minutes, <a href="/docs/en/tools-reference#webfetch-tool-behavior">the fetch fails with a deadline error</a> instead of hanging; set <code>CLAUDE\_CODE\_WEBF… What's new Claude Code CLI · in the page whats-new/index …ack`; **`--restricted`** starts a session without the command-running tools or your user and project settings, for evaluation harnesses on shared machines; and the **`modelPicker`** setting controls w… Orchestrate subagents at scale with dynamic workflows Claude Code CLI · in the page workflows …e cross-checking filtered out. Requires the [WebSearch tool](/docs/en/tools-reference#websearch-tool-behavior) to be available | `/deep-research` runs only when you invoke it. [Workflows you save](#… Run parallel sessions with worktrees Claude Code CLI · in the page worktrees …ing a session, and it creates one with the [`EnterWorktree`](/docs/en/tools-reference) tool. Once in a worktree, Claude can switch directly to another one under `.claude/worktrees/` by calling `EnterW… Zero data retention Claude Code CLI · in the page zero-data-retention …olicies. | | Third-party integrations | Data processed by third-party tools, MCP servers, or other external integrations is not covered by ZDR. Review those services' data handling practices independe… Build for Claude Claude Documentation · in the page build/overview …it, [see whether they use it](#measure-usage-of-what-you-built). ### Tools that help you build and check a plugin Most of the tooling for building and checking a plugin lives in [Claude Code](https:… Admin controls Claude Documentation · in the page claude-science/admin-controls …are enabled. Expand it to see the list, and select an item to see its tools or instructions, author, license, and third-party terms. Besides switching every current item in that list, **Enable all**… Claude Science changelog Claude Documentation · in the page claude-science/changelog …org` by name, add `jun2026.archive.ensembl.org` * Removed connector tools that failed on every call: the ENCODE and eQTL Catalogue lookups and ZINC's random-sample tool * "Download script" on an a… Connectors and skills Claude Documentation · in the page claude-science/connectors-and-skills …tions Claude loads when relevant, covering how to run a method, which tools to use, and what to verify. Both are managed in Settings and apply across all projects. ## Featured connectors Claude Scie… Use Claude Science on a corporate network Claude Documentation · in the page claude-science/corporate-networks …edential saved in Settings | | Local connectors (the bundled research tools) behind TLS inspection | Not supported | Not supported | Not supported | ## Point package installs at an internal mirror W… Custom connectors Claude Documentation · in the page claude-science/custom-connectors …Claude asks before using it. On the connector's page, set individual tools to **Always allow**, **Ask each time**, or **Block** under **Tools**, or turn on Skip approvals for the whole connector. <W… Enable Claude Science Claude Documentation · in the page claude-science/enable-claude-science …continue and adjust roles later. ### Set up connectors Turn on the tools and data sources your team will use in Claude Science. You can change all of it later. Under **Featured connectors**, the *… Get started Claude Documentation · in the page claude-science/get-started …laude-science url` to print a fresh one. * On macOS, some of Claude's tools can't start and the error mentions the Xcode license, usually right after an Xcode update: macOS won't run the Python that c… Glossary Claude Documentation · in the page claude-science/glossary …, session workspaces, and logs. **[Environment](/docs/claude-science/tools-and-environments)**: a named set of installed packages (conda) that a kernel runs in, reused across sessions. **Execution l… Manage Claude Science on devices Claude Documentation · in the page claude-science/manage-on-devices …ses run as ordinary child processes and are visible to host-level EDR tools. On Windows, they run under the member's account inside a Windows AppContainer, the operating system's built-in app isolatio… Use Claude Science on more than one computer Claude Documentation · in the page claude-science/multiple-computers …your work sits alongside them on your computer, where your own backup tools can cover it like any other application data. Your prompts, Claude's responses, and the file content Claude reads to answer… Network requirements Claude Documentation · in the page claude-science/network-requirements …ed them | | `github.com`, `*.github.com`, `*.githubusercontent.com` | Tools and packages published as GitHub releases | Claude Science itself does not require GitHub; the package manager ships inside… Claude Science Claude Documentation · in the page claude-science/overview …writes and runs code and [installs the packages](/docs/claude-science/tools-and-environments#installing-packages) an analysis needs. In any field, Claude Science also gives you these tools: * **Remo… Configure GitHub access Claude Documentation · in the page claude-tag/admins/configure-github …ssion runs in an isolated sandbox with a standard set of preinstalled tools. There are two places to add what a project needs beyond that set, such as a specific language runtime or a database client:… Connect Amplitude Claude Documentation · in the page claude-tag/admins/connections/amplitude …y signing in as an Amplitude user, which gives Claude Amplitude's MCP tools for creating and editing content as well as reading it. For the API key route, pair the connection with a plugin that cover…