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Smbutils

Category: General  ·  Sub-category: general-misc  ·  Last updated:
Use when inspecting, validating, repairing, importing into, or maintaining a Synchronet Message Base (SMB) file — mail (mail.shd), message sub-boards (data/subs/<code>.shd), or file bases (data/file/<code>.shd) — via the smbutil, chksmb, or fixsmb command-line tools. Trigger whenever the user mentions smbutil, chksmb, fixsmb, SMB files, .shd / .sdt / .sid / .sha files, "the mail base", "rebuild/renumber the message base", "pack the sub", "check the message base for corruption", "repair an SMB", "dump a hash file", "view headers", "import a message", or any low-level inspection, validation, or repair of a Synchronet messaging file that isn't doable from inside the BBS or MsgBase JS API. Prefer this skill over guessing flags or shelling out blind.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Three command-line tools work on Synchronet Message Base (SMB) files. They overlap in scope but each has a specific job:

What this skill does

Smbutils is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/smbutils/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when inspecting, validating, repairing, importing into, or maintaining a Synchronet Message Base (SMB) file — mail (mail.shd), message sub-boards (data/subs/<code>.

Who uses this skill

The Smbutils Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 196,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/smbutils
curl -L https://claudskills.com/skills/smbutils/SKILL.md \
  -o ~/.claude/skills/smbutils/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/smbutils/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/smbutils/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\smbutils\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

Frequently asked questions

How do I install the Smbutils Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/smbutils/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Smbutils skill do?
Use when inspecting, validating, repairing, importing into, or maintaining a Synchronet Message Base (SMB) file — mail (mail.shd), message sub-boards (data/subs/<code>.shd), or file bases (data/file/<code>.shd) — via the smbutil, chksmb, or fixsmb command-line tools. Trigger whenever the user mentions smbutil, chksmb, fixsmb, SMB files, .shd / .sdt / .sid / .sha files, "the mail base", "rebuild/renumber the message base", "pack the sub", "check the message base for corruption", "repair an SMB", "dump a hash file", "view headers", "import a message", or any low-level inspection, validation, or repair of a Synchronet messaging file that isn't doable from inside the BBS or MsgBase JS API. Prefer this skill over guessing flags or shelling out blind.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Smbutils skill?
Use Smbutils when your Claude Code task falls under the General category — specifically in the general misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Smbutils" or describe the task and let Claude pick). Browse related skills at /category/general/.
What is a Claude Code skill and how does the Smbutils skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Smbutils is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
SynchronetBBS. (2026). Smbutils [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/smbutils/
BibTeX
@misc{smbutils-2026,
  author    = {SynchronetBBS},
  title     = {Smbutils [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/smbutils/}
}

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Security scan

Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.

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