Use Claude Code in VS Code changedvs-code
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9999 * **Plan**: Claude describes what it will do and waits for approval before making changes. VS Code automatically opens the plan as a full Markdown document where you can add inline comments to give feedback before Claude begins.
100100 * **Edit automatically**: Claude makes edits without asking.
101101* **Model**: select **Switch model…** from the command menu to change the model mid-session. You can also click the model name at the bottom of the prompt box to open the same picker. When the current model supports [effort levels](/docs/en/model-config#adjust-effort-level), the picker also shows an **Effort** row and the model name button shows the selected level. The model name button and the **Effort** row require Claude Code v2.1.257 or later.
102* **Command menu**: click `/` or type `/` to open the command menu. Options include attaching files, switching models, and toggling extended thinking. The Customize section provides access to MCP servers, slash commands, output styles, hooks, memory, permissions, and plugins. Items with a terminal icon open in the integrated terminal.
102* **Command menu**: click `/` or type `/` to open the command menu. Options include attaching files, switching models, and toggling extended thinking. The Customize section provides access to MCP servers, commands, output styles, hooks, memory, permissions, and plugins. Items with a terminal icon open in the integrated terminal.
103103 * To browse commands such as `/usage` or [`/remote-control`](/docs/en/remote-control), select **Slash commands** in the Customize section. A dialog lists them with a filter box. Pick one to run it. Typing `/` in the prompt box still suggests commands inline. Requires Claude Code v2.1.257 or later.
104104 * Select **Output styles** in the Customize section to pick an [output style](/docs/en/output-styles), including your custom styles. Requires Claude Code v2.1.257 or later.
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448448| Commands and skills | [All](/docs/en/commands) | Subset (type `/` to see available) |
449449| MCP server config | Yes | Yes ([add and manage servers](#connect-to-external-tools-with-mcp) with `/mcp` in the chat panel) |
450450| Checkpoints | Yes | Yes |
451| `!` bash shortcut | Yes | No |
451| `!` Bash shortcut | Yes | No |
452452| Tab completion | Yes | No |
453453
454454### Rewind with checkpoints
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565565**Transport and authentication.** The server binds to `127.0.0.1` on a random port in the range 10000–65535, and the port is not configurable. The transport is unencrypted `ws://`; because the socket is loopback-only, any process that could capture the traffic can also read the token from the lock file, so TLS would not add protection. Each extension activation 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` header to connect. The lock file has `0600` permissions in a `0700` directory, so only the user running VS Code can read it. If `CLAUDE_CONFIG_DIR` is set, the lock file is written to `$CLAUDE_CONFIG_DIR/ide/` instead.
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567**Tools exposed to the model.** The server hosts a dozen tools, but only two are visible to the model. The rest are internal RPC the CLI uses for its own UI — opening diffs, reading selections, saving files — and are filtered out before the tool list reaches Claude.
567**Tools exposed to the model.** The server hosts a dozen tools, but only two are visible to the model. The rest are internal RPC the CLI uses for its own UI, such as opening diffs, reading selections, and saving files. They are filtered out before the tool list reaches Claude.
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569| Tool name (as seen by hooks) | What it does | Read-only |
570| ---------------------------- | ------------------------------------------------------------------------------------------------------------------------- | --------- |
571| `mcp__ide__getDiagnostics` | Returns language-server diagnostics — the errors and warnings in VS Code's Problems panel. Optionally scoped to one file. | Yes |
572| `mcp__ide__executeCode` | Runs Python code in the active Jupyter notebook's kernel. See confirmation flow below. | No |
569| Tool name (as seen by hooks) | What it does | Read-only |
570| ---------------------------- | ------------------------------------------------------------------------------------------------------------------------ | --------- |
571| `mcp__ide__getDiagnostics` | Returns language-server diagnostics: the errors and warnings in VS Code's Problems panel. Optionally scoped to one file. | Yes |
572| `mcp__ide__executeCode` | Runs Python code in the active Jupyter notebook's kernel. See confirmation flow below. | No |
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574**Jupyter execution always asks first.** `mcp__ide__executeCode` can't run anything silently. On each call, the code is inserted as a new cell at the end of the active notebook, VS Code scrolls it into view, and a native Quick Pick asks you to **Execute** or **Cancel**. Cancelling — or dismissing the picker with `Esc` — returns an error to Claude and nothing runs. The tool also refuses outright when there's no active notebook, when the Jupyter extension (`ms-toolsai.jupyter`) isn't installed, or when the kernel isn't Python.
574**Jupyter execution always asks first.** `mcp__ide__executeCode` can't run anything silently. On each call, the code is inserted as a new cell at the end of the active notebook, VS Code scrolls it into view, and a native Quick Pick asks you to **Execute** or **Cancel**. Cancelling, or dismissing the picker with `Esc`, returns an error to Claude and nothing runs. The tool also refuses outright when there's no active notebook, when the Jupyter extension (`ms-toolsai.jupyter`) isn't installed, or when the kernel isn't Python.
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576576<Note>
577577 The Quick Pick confirmation is separate from `PreToolUse` hooks. An allowlist entry for `mcp__ide__executeCode` lets Claude *propose* running a cell; the Quick Pick inside VS Code is what lets it *actually* run.
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