Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/acostanzo/quickstopnpx agentmods add skills/acostanzo/quickstop/smithWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/acostanzo/quickstop/smith)<a href="https://agentmods.dev/skills/acostanzo/quickstop/smith"><img src="https://agentmods.dev/badge/skills/acostanzo/quickstop/smith/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/acostanzo/quickstop/smith"><img src="https://agentmods.dev/badge/skills/acostanzo/quickstop/smith.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00014 | $0.04022 |
| Opus 5.5 | $0.00006 | $0.01609 |
| Sonnet 5.5 | $0.00003 | $0.00804 |
| Haiku 4.5 | $0.00001 | $0.00402 |
Grade A, and why
smith scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 453 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Smith: Plugin Scaffolder
You are the Smith orchestrator. When the user runs /smith <plugin-name>, scaffold a new Quickstop plugin with correct structure, frontmatter, and marketplace registration. Follow each phase in order.
Human-driven by design. Smith carries
disable-model-invocation: truein its frontmatter, which means agents and sub-Claudes cannot dispatch it through the Skill tool —Skill(smith, ...)returnsSkill smith cannot be used with Skill tool due to disable-model-invocation. This is intentional, not an oversight. Smith is an interactive scaffolding skill: it asks questions via AskUserQuestion and produces a plugin from human answers. Letting an agent answer those questions on the user's behalf would defeat the purpose. The supported way for an agent to "dogfood" smith is the recipe-by-hand path — read this SKILL.md and execute each phase manually against the user's stated inputs, calling Read/Write/Edit/Bash directly rather than dispatching the skill.
Hook note. Smith does not scaffold a
hooks/directory. If you see the user mention "hooks" anywhere during the questionnaire — in the Description, in Components, or in any free-text answer — prepend the following note to the very next prompt you display (once, not repeatedly): "Note: smith doesn't scaffold hooks. Author a hook by hand: a small script underbin/wired from ahooks/hooks.jsonentry in the consumer's surface, observing only (no payload or flow mutation)." Then continue normally.
Phase 0: Validation
Step 1: Parse Plugin Name
Extract the plugin name from $ARGUMENTS. If empty or missing, use AskUserQuestion to ask:
- "What should the plugin be named? (kebab-case, e.g.
my-plugin)"
Step 2: Validate Name
- Kebab-case: Name must match
^[a-z][a-z0-9]*(-[a-z0-9]+)*$. If not, reject and ask for a valid name. - No conflicts: Glob for
plugins/$ARGUMENTS/— if it exists, tell the user and abort. - PROJECT_ROOT: Run
git rev-parse --show-toplevelvia Bash to get the repo root.
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 453 lines · 14 tokens per session scan A 23e04a8afd2a
smith is a skill published in the GitHub repository acostanzo/quickstop (46 stars, last pushed 5mo ago), licensed MIT. It adds 14 tokens to every session and 4,022 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
smith compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| smithacostanzo/quickstop | Skill | 46 | 5mo ago | MIT | A | 14 | Claude Code |
| doc-html-slidemodu-ai/moai-cowork | Skill | 315 | 1mo ago | Apache-2.0 | A | 438 | Claude Code |
| cs-channel-messagemodu-ai/moai-cowork | Skill | 315 | 1mo ago | Apache-2.0 | A | 465 | Claude Code |
| media-gpt-image-promptmodu-ai/moai-cowork | Skill | 315 | 1mo ago | Apache-2.0 | A | 334 | Claude Code |
| career-portfoliomodu-ai/moai-cowork | Skill | 315 | 1mo ago | Apache-2.0 | A | 124 | Claude Code |
| ai-slop-reviewermodu-ai/moai-cowork | Skill | 315 | 1mo ago | Apache-2.0 | A | 255 | Claude Code |
| setup-mcp-connectormodu-ai/moai-cowork | Skill | 315 | 1mo ago | Apache-2.0 | A | 191 | Claude Code |