# An Agent Kit for App in Toss Miniapps: Rules Before Vibes

> Author: Tony Lee
> Published: 2026-06-29
> URL: https://tonylee.im/en/blog/appintoss-agent-kit-fifty-miniapps/
> Reading time: 2 minutes
> Language: en
> Tags: toss, agents, codex, claude-code, cursor, skills, korea

## Canonical

https://tonylee.im/en/blog/appintoss-agent-kit-fifty-miniapps/

## Rollout Alternates

en: https://tonylee.im/en/blog/appintoss-agent-kit-fifty-miniapps/
ko: https://tonylee.im/ko/blog/appintoss-agent-kit-fifty-miniapps/
ja: https://tonylee.im/ja/blog/appintoss-agent-kit-fifty-miniapps/
zh-CN: https://tonylee.im/zh-CN/blog/appintoss-agent-kit-fifty-miniapps/
zh-TW: https://tonylee.im/zh-TW/blog/appintoss-agent-kit-fifty-miniapps/

## Description

appintoss-kit layers AGENTS.md, guides, skills, hooks, and review agents so Codex/Claude/Cursor stop missing policy, Korean UX, design rules, and store metadata.

## Summary

An Agent Kit for App in Toss Miniapps: Rules Before Vibes is part of Tony Lee's ongoing coverage of AI agents, developer tools, startup strategy, and AI industry shifts.

## Outline

- Layers
- The loop

## Content

Shipping an [App in Toss](https://lnkd.in/dJsnGhNz) miniapp looks small until you inventory the checklist: product policy, Korean UX copy, Toss design rules, store assets, console metadata. Ask a bare agent and it usually drops one of those.

I packaged the rules so the agent has to read them. Unofficial kit, works with Codex, Claude Code, or Cursor: agent reads contracts → applies skills → validates results. I used it to push a large batch of miniapps in a day (fifty in the run I wrote about).

## Layers

- **AGENTS.md** — root contract every agent sees first, including routing by task type and “smallest correct change.”
- **guide/** — task routers for UI, assets, metadata.
- **.agents/skills/** — executable skills: naming, SEO keywords, imagegen, Toss design theme.
- **.agents/hooks/** — pre-edit gates and post-edit verification; loops until evidence passes.
- **.agents/agents/** — adversarial review subagents.
- **.agents/references/** — local references so memory alone is not the source of truth.

When everything lives only in chat memory, concerns bleed. Layers stop that.

## The loop

Resolve → read rules → smallest change → strictest gate → on failure replan from root cause → re-run evidence before “done.” The agent is not allowed to declare success until the loop clears. That is how policy violations get blocked early.

Start with a clone, read `AGENTS.md`, then `guide/resolver.md` for the task route. The kit is the boring part on purpose: taste and policy first, generation second.

## Related URLs

- Author: https://tonylee.im/en/author/
- Publication: https://tonylee.im/en/blog/about/
- Related article: https://tonylee.im/en/blog/ai-subscription-stack-by-budget-and-role/
- Related article: https://tonylee.im/en/blog/kimi-k3-beats-fable-5-open-source-frontier/
- Related article: https://tonylee.im/en/blog/agent-transition-starts-with-initial-setup/

## Citation

- Author: Tony Lee
- Site: tonylee.im
- Canonical URL: https://tonylee.im/en/blog/appintoss-agent-kit-fifty-miniapps/

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Author: Tony Lee | Website: https://tonylee.im
For more articles, visit: https://tonylee.im/en/blog/
This content is original and authored by Tony Lee. Please attribute when quoting or referencing.