Run Claude Code programmatically changedheadless
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3535Bare mode is useful for CI and scripts where you need the same result on every machine. A hook in a teammate's `~/.claude` or an MCP server in the project's `.mcp.json` won't run, because bare mode never reads them. A directory you name with `--add-dir` is a partial exception: bare mode loads skills from its `.claude/skills/` folder, but still skips its `.claude/commands/` and `.claude/agents/` folders. [Skills from additional directories](/docs/en/skills#skills-from-additional-directories) covers what does and doesn't load.
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37Without `--bare`, Claude Code runs the hooks in a project's `.claude/settings.json` even in a folder you've never trusted, because a `-p` session shows no workspace trust dialog. It also connects the servers in the project's `.mcp.json`, because a `-p` session can't show the per-server approval prompt either. [What runs before you trust a folder](/docs/en/permissions#what-runs-before-you-trust-a-folder) covers each kind of repository content under `-p` and how to keep it out.
37Without `--bare`, a `-p` session runs the hooks in a project's `.claude/settings.json` and connects the servers in its `.mcp.json`, even in a folder you've never trusted. A `-p` session shows no workspace trust dialog and no per-server approval prompt. [What runs before you trust a folder](/docs/en/permissions#what-runs-before-you-trust-a-folder) covers each kind of repository content under `-p` and how to keep it out.
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3939This example runs a one-off summarize task in bare mode and pre-approves the Read tool so the call completes without a permission prompt. Set `ANTHROPIC_API_KEY` before running it, because bare mode doesn't use your subscription login:
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