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Claude Code Skill

nobox ships a Claude Code Skill that tells Claude Code (and any other client that consumes skill files) what nobox is, when to use it, what the tools mean, and how to behave around polling and destructive operations.

Install

nobox install-skill

That copies the bundled SKILL.md to ~/.claude/skills/nobox/SKILL.md.

For a project-scoped install (only active in one repo):

nobox install-skill --project /path/to/your/project

Drops it into /path/to/your/project/.claude/skills/nobox/SKILL.md.

After install, restart any Claude Code session and the skill becomes discoverable. You can also invoke it explicitly with /nobox.

What the skill tells Claude

The skill description triggers auto-invocation when the user asks for async / leave-a-note / email-style follow-up patterns ("ping me when done", "leave me a message", "check my inbox", "email me a summary"...).

The body covers:

• When to reach for nobox vs. normal interactive chat.
• The tool table with one-line guidance per tool.
• Mental model: direction="in" vs "out", POP3-style retention, that doctor sentinels are auto-filtered, PGP transparency, the best-effort quoted-text trim.
• Typical workflow: list_inboxes → read_inbox (previews) → read_message for actionable items → send_message with in_reply_to.
• Polling pattern: if the runtime supports recurring tasks (/schedule, /loop, cron, etc.), Claude should propose a 10-minute recurring check and only set it up after the user agrees - never silently.
• Safety: create_inbox and delete_inbox are destructive; never call them without explicit user instruction.

Updating

The skill ships with the package, so to refresh after a nobox upgrade:

nobox install-skill

(It overwrites the installed file.)

Uninstalling

rm -rf ~/.claude/skills/nobox

MCP + skill together

The recommended setup is to wire both:

# MCP gives Claude the actual tools
claude mcp add --transport stdio nobox -- nobox mcp

# Skill gives Claude the methodology
nobox install-skill

The MCP server provides connectivity (the actual read_inbox / send_message calls); the skill provides the operating manual for using them. They're complementary, not redundant.