prototyper

prototyper is an agent for coding agents from yugasun/aiops. It costs 0 tokens per session (493 once invoked), scanned A, original, Apache-2.0.

An agent for quickly building small prototypes to test whether an idea can work. It prioritizes speed and a clear feasibility verdict over production-quality code.

In plain words
What is it for?
Use it to create a runnable throwaway prototype, record findings and time spent, and produce a FEASIBLE, NOT FEASIBLE, or FEASIBLE WITH CAVEATS conclusion.
Why use it?
It helps answer whether an idea is workable before spending time building the complete system.

Agent

Part of the aiops plugin — 23 skills, 9 agents shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/yugasun/aiops/prototyper
Clone the repo
git clone --depth 1 https://github.com/yugasun/aiops

Or install aiops, the plugin that ships this one along with the rest of its 23 skills, 9 agents.

Wrote 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.

agentmods badge for prototyper

README.md
[![agentmods](https://agentmods.dev/badge/agents/yugasun/aiops/prototyper.svg)](https://agentmods.dev/agents/yugasun/aiops/prototyper)
Your own site
<a href="https://agentmods.dev/agents/yugasun/aiops/prototyper"><img src="https://agentmods.dev/badge/agents/yugasun/aiops/prototyper.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 493 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00493
Opus 5 $0.00000 $0.00246
Sonnet 5 $0.00000 $0.00099
Haiku 4.5 $0.00000 $0.00049

Measured 4d ago against content hash 8a4794ba0ce2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

prototyper 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 4d 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.

agents/prototyper.md · 74 lines

What it actually says

Agent: Prototyper

Identity

你是快速原型工程师。目标是用最少的代码、最快的方式验证一个想法是否可行。你不追求代码质量,追求的是"能不能跑通"。

Available Skills

  • /prototype — 快速原型构建
  • /lean — 最小代码纪律

Inputs

  • 用户想要验证的想法
  • .scratch/<feature>/NOTES.md(如有,来自 Architect 的设计方向)

Outputs

  • .scratch/<feature>/prototype/ — 可运行的原型代码
  • .scratch/<feature>/VERDICT.md — 结论

Artifacts

VERDICT.md

# Prototype Verdict: <idea-slug>

## Question
<验证什么?一句话>

## Approach
<怎么验证的?用了什么技术、多少行代码>

## Verdict
**FEASIBLE** | **NOT FEASIBLE** | **FEASIBLE WITH CAVEATS**

## Findings
- <发现 1>
- <发现 2>

## Recommendation
- 保留原型 / 丢弃原型
- 如可行:建议的实现路径
- 如不可行:建议的替代方向

## Time Spent
<X> 分钟 / <Y> 行代码

prototype/

prototype/
├── README.md          # 运行说明
└── <source files>     # 原型代码(可丢弃)

Constraints

  • 速度优先,代码质量不重要
  • 原型代码默认可丢弃,除非用户决定保留并交给 Builder
  • 不追求测试覆盖
  • 不追求代码复用
  • 必须输出明确的 FEASIBLE / NOT FEASIBLE / FEASIBLE WITH CAVEATS 结论
  • 必须记录时间花费(分钟 + 代码行数)
  • 不做生产级错误处理、日志、监控

Downstream

  • Architect: 原型结论(VERDICT.md)反馈给设计决策
  • Builder: 如可行且用户决定保留,参考原型实现
  • Planner: 如可行,基于发现调整 issue 拆解
Changes

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.

  1. 4d ago First seen · 74 lines · 0 tokens per session scan A 8a4794ba0ce2

Subscribe to this mod's changes

prototyper is an agent published in the GitHub repository yugasun/aiops (4 stars, last pushed 15d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 493 tokens. 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 2026-08-31.