All settings changedsettings-reference
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25932593* Identity variables that Claude Code's hosting environments own, such as `CLAUDE_CODE_REMOTE` and `CLAUDE_CODE_ACCOUNT_UUID`, are ignored from every file.
25942594* [`CLAUDE_CODE_MESSAGING_SOCKET` and `CLAUDE_CODE_MESSAGING_TOKEN`](/docs/en/env-vars#variables), which Claude Code exports itself, are ignored from every file. Ignoring the socket variable requires Claude Code v2.1.224 or later, and ignoring the token requires v2.1.228 or later.
25952595* [`CLAUDE_CODE_PROJECT_DIR_NAME`](/docs/en/sessions#name-the-project-directory-yourself), which Claude Code reads from the launch environment only, is ignored from every file; requires v2.1.234 or later.
2596* [`CLAUDE_CODE_RESTRICTED`](/docs/en/env-vars#variables), which Claude Code reads from the launch environment only, is ignored from every file.
25962597
25972598### `fileCheckpointingEnabled`
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35473548* **Scope**: [`Any file`](#scopes). Arrays merge across settings files.
35483549* **Type**: array of URL patterns, with `*` as a wildcard
3549* **Default**: unset, so any URL is allowed
3550
3551This example allows any URL under `https://hooks.example.com/` and any `http://localhost` URL:
3552
3553```json settings.json them
3550* **Default**: unset,
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