Claude Code

crc is an IDE that Claude Code connects to, the same way it connects to VS Code or JetBrains. You do not install an extension; the bridge is part of the editor.

Connect

From a crc terminal

1. Open the terminal panel with ⌃`.

2. Run claude.

   It finds the crc window it is running in and connects by itself.

As a tab

Press ⌘⇧C (View › Claude Code). crc opens a terminal tab running claude, already connected.

You need Claude Code installed and signed in; crc does not bundle it.

What Claude sees

Without copying anything into the prompt, Claude can ask crc for:

Tool	What crc answers
getCurrentSelection, getLatestSelection	The file and selection you are on.
getDiagnostics	Errors and warnings from the language servers.
getOpenEditors	Your open tabs, which one is active and which have unsaved changes.
getWorkspaceFolders	The project folder.
checkDocumentDirty, saveDocument	Whether a file has unsaved edits, and saving it.
openFile	Opening a file in a tab.
openDiff, closeAllDiffTabs	Proposing an edit as a diff, and closing those diffs.

Reviewing edits

Every edit Claude proposes opens as a diff tab. Read it, then:

Accept the change⌘↩

Reject itEsc

Claude waits for your answer, however long you take.

Files that Claude writes to disk directly show up in their tabs at once, the same way any file changed by another program does: a clean tab reloads, and a tab with unsaved edits asks before anything is overwritten.

Security

Local only

The bridge listens on 127.0.0.1 only, never on the network. It is protected by a random token, written to a lock file readable by you alone, in ~/.claude/ide/ (or under $CLAUDE_CONFIG_DIR when that is set). A client without the token is refused.

To turn the bridge off entirely, start crc with CRC_NO_CLAUDE=1 in its environment:

CRC_NO_CLAUDE=1 open -a crc .

Where this is going

Claude Code connecting to crc is the first step of a larger idea: an agent as a protocol client, reading the same buffer state, syntax tree and index the editor’s own UI uses. That is not built yet; Why crc exists says more.