preview-mode

preview-mode is a skill for Claude Code, Codex from wasintoh/toh-framework. It costs 56 tokens per session (2,247 once invoked), scanned A, original, MIT.

A preview workflow for showing completed visible changes through a live development URL or a short plain-language summary before final delivery.

In plain words
What is it for?
It helps present what changed in a running project, including layout and interface details, or describe the result when no development server is available.
Why use it?
It lets the user inspect pages, components, or styling and request changes with confidence before the work is committed.

Skill for Claude CodeCodex

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 skills/wasintoh/toh-framework/preview-mode
Any agent
npx skills add wasintoh/toh-framework --skill preview-mode
Clone the repo
git clone --depth 1 https://github.com/wasintoh/toh-framework

Made for: Claude Code, Codex.

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 preview-mode

README.md
[![agentmods](https://agentmods.dev/badge/skills/wasintoh/toh-framework/preview-mode.svg)](https://agentmods.dev/skills/wasintoh/toh-framework/preview-mode)
Your own site
<a href="https://agentmods.dev/skills/wasintoh/toh-framework/preview-mode"><img src="https://agentmods.dev/badge/skills/wasintoh/toh-framework/preview-mode.svg" alt="Measured on agentmods" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,247 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 $0.00056 $0.02247
Opus 5 $0.00028 $0.01123
Sonnet 5 $0.00011 $0.00449
Haiku 4.5 $0.00006 $0.00225

Measured 4d ago against content hash 35e5989a1814, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

preview-mode 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.

src/skills/preview-mode/SKILL.md · 429 lines

How it starts

The opening of the file, as written. The whole thing — 429 lines — stays where its author put it; the contents beside it link to each section on GitHub.

👁️ Preview Mode Skill

Purpose: Show users what will change before applying Version: 1.0.0 Author: Toh Framework Team

Overview

This skill enables AI to show previews of changes before applying them, giving users confidence in what's being created.

Core Principle

AI completes work
    ↓
Show preview (description + URL if available)
    ↓
User confirms or requests changes
    ↓
Apply changes (or iterate)

SEE BEFORE COMMIT


Preview Types

Type 1: Dev Server Preview (Live)

When dev server is running:

✅ **สร้าง Dashboard เสร็จแล้ว!**

👁️ **Preview:**
🌐 http://localhost:3000/dashboard

📸 **สิ่งที่สร้าง:**
- Header พร้อม navigation
- Stats cards (4 ตัว)
- Sales chart
- Recent orders table

เปิด URL ด้านบนเพื่อดู preview ได้เลยครับ!

💡 ต้องการแก้ไขอะไรไหมครับ?

Type 2: Description Preview (No Server)

When dev server isn't running:

✅ **เตรียม Dashboard พร้อมแล้ว!**

📋 **Preview สิ่งที่จะสร้าง:**

**Layout:**
┌─────────────────────────────────────┐
│ 🔵 Header (Logo + Nav + Profile)   │
├─────────────────────────────────────┤
│ 📊 Stats Cards (4 columns)          │
│ ┌───┐ ┌───┐ ┌───┐ ┌───┐            │
│ │ $ │ │ 📦│ │ 👥│ │ 📈│            │
│ └───┘ └───┘ └───┘ └───┘            │
├─────────────────────────────────────┤
│ 📈 Sales Chart (Line/Bar)          │
│ [Chart area]                        │
├─────────────────────────────────────┤
│ 📋 Recent Orders Table             │
│ ID | Customer | Amount | Status     │
└─────────────────────────────────────┘

**Components:**
- StatsCard.tsx (reusable)
- SalesChart.tsx (with Recharts)
- OrdersTable.tsx (with pagination)

สร้างเลยไหมครับ? หรือต้องการปรับอะไรก่อน?

Type 3: Before/After Preview (Modifications)

When modifying existing code:

🔄 **Preview การเปลี่ยนแปลง:**

**Before:**
```tsx
<Button>Submit</Button>

After:

<Button 
  onClick={handleSubmit}
  disabled={isLoading}
>
  {isLoading ? <Spinner /> : 'Submit'}
</Button>

Changes:

  • ✅ เพิ่ม onClick handler
  • ✅ เพิ่ม loading state
  • ✅ เพิ่ม Spinner component

Apply การเปลี่ยนแปลงนี้ไหมครับ?

Read the full file on GitHub · 429 lines

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 · 429 lines · 56 tokens per session scan A 35e5989a1814

Subscribe to this mod's changes

preview-mode is a skill published in the GitHub repository wasintoh/toh-framework (95 stars, last pushed yesterday), licensed MIT. It adds 56 tokens to every session and 2,247 once invoked, about $0.0003 per session on Opus 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.

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