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Workbench Builder

Category: Security  ·  Sub-category: web-security  ·  Last updated:
ai:agenttype:review
Builds disposable localhost workbenches — Bun.serve + bun:sqlite + React 19 + Astryx apps, zero build config, no deploy — giving an agentic coding/eval/PR/data session a live UI. The signature move is a two-way human↔agent loop over one SQLite file: the human acts in the browser, the agent acts from the terminal (bun run scripts), both seeing the same state update live via SSE with no reload. Ships recipes for eval viewers, PR review rooms, document redline surfaces, spreadsheet/grid editors, multi-surface triage queues, trace replays, and more. Use when the user wants a quick local UI for a coding/eval/PR/data task, OR mentions localhost workbench, eval viewer, PR review room, review/redline a document, select text and comment, a spreadsheet or editable grid, triage my inbox, live invalidation, two-way agent loop, or "build me a little UI for this." Do NOT use for production apps or deployed SPAs (use frontend-design), or for static data pages / HTML reports where a self-contained file is the right tool.
Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Workbench Builder includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); at least one code block. At roughly 1,674 words the SKILL.md is on the longer end of the catalog distribution.

License
MIT
Original author
theagenticguy
Indexed lastmod
Catalog position
Security · web-security
Indexed related skills
10

How Workbench Builder fits the catalog

Workbench Builder sits in the Security category under the web-security sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

What this skill does

Workbench Builder is a community-contributed Claude Code skill in the web-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/workbench-builder/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user wants a quick local UI for a coding/eval/PR/data task, OR mentions localhost workbench, eval viewer, PR review room, review/redline a document, select text and comment, a spreadsheet or editable grid, triage my inbox, live invalidation, two-way agent loop, or "build me a little UI for this." Do NOT use for production apps or deployed SPAs (use frontend-design), or for static data pages / HTML reports where a self-contained file is the right tool.

Who uses this skill

The Workbench Builder Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 191,000+ 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/workbench-builder
curl -L https://claudskills.com/skills/workbench-builder/SKILL.md \
  -o ~/.claude/skills/workbench-builder/SKILL.md

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

Skills live at ~/.claude/skills/workbench-builder/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\workbench-builder\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.

See pricing → Download desktop app

Frequently asked questions

How do I install the Workbench Builder Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/workbench-builder/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Workbench Builder skill do?
Builds disposable localhost workbenches — Bun.serve + bun:sqlite + React 19 + Astryx apps, zero build config, no deploy — giving an agentic coding/eval/PR/data session a live UI. The signature move is a two-way human↔agent loop over one SQLite file: the human acts in the browser, the agent acts from the terminal (bun run scripts), both seeing the same state update live via SSE with no reload. Ships recipes for eval viewers, PR review rooms, document redline surfaces, spreadsheet/grid editors, multi-surface triage queues, trace replays, and more. Use when the user wants a quick local UI for a coding/eval/PR/data task, OR mentions localhost workbench, eval viewer, PR review room, review/redline a document, select text and comment, a spreadsheet or editable grid, triage my inbox, live invalidation, two-way agent loop, or "build me a little UI for this." Do NOT use for production apps or deployed SPAs (use frontend-design), or for static data pages / HTML reports where a self-contained file is the right tool.
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 Workbench Builder skill?
Use Workbench Builder when your Claude Code task falls under the Security category — specifically in the web security 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 Workbench Builder" or describe the task and let Claude pick). Browse related skills at /category/security/.
What is a Claude Code skill and how does the Workbench Builder 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. Workbench Builder is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security 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
theagenticguy. (2026). Workbench Builder [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/workbench-builder/
BibTeX
@misc{workbench-builder-2026,
  author    = {theagenticguy},
  title     = {Workbench Builder [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/workbench-builder/}
}

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<script>
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<iframe>
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Security scan

Grade A · scanned 2026-08-26 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 1 of 10 categories (network), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/workbench-builder/#security)

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More Security skills

Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security skills → Top 100 skills
Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

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