OpenClaw

niche

Trading card marketplace with partial USDC deposits. Browse cards, deposit partial amounts, and complete purchases with secure on-chain escrow.

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查看来源 ↗安装与使用 SKILL.md ↗

安装与使用

请根据来源仓库和你的 AI 工具说明安装此技能。先阅读技能文件和依赖要求，再添加到工作流。

SkillHub CLI

skillhub install clementsutjiatma/niche

打开来源仓库，查看说明和兼容环境后，按来源提供的命令或步骤安装。

将来源链接提供给你的 Agent，让它先读取说明、核对依赖，并向你说明将执行的安装步骤。

查看来源 ↗使用指南

技能说明

Niche v1 — Trading Card Marketplace with Partial Deposits

A peer-to-peer trading card marketplace where users list, discover, and transact cards with partial USDC deposits on Base Sepolia. Meet in person to inspect cards before completing payment.

Architecture

Hosted backend on Supabase Edge Functions. The CLI is a thin HTTP client — all heavy logic (auth, signing, escrow, on-chain transactions) runs server-side.

CLI (thin client)          →  Edge Functions (Supabase)
  fetch() + open()              niche-api   (REST API)
  ~/.niche/auth.json            niche-ui    (hosted HTML pages)
  @supabase/supabase-js         niche-sign  (passkey signing)
  open (browser launcher)       niche-escrow (on-chain ops)

Hosted UI: https://niche-ddq89ltdk-clement-sutjiatmas-projects.vercel.app

Anyone with the link can browse cards — no install needed.

Why Partial Deposits + In-Person Inspection

Partial deposits — Hold a card with just $10-50 deposit, not full price
Meet & inspect — See the card condition in person before final payment
Atomic payment — Buyer confirms + pays remaining amount in single action
USDC escrow — All funds secured on-chain, released when both confirm
Buyer cancellation — Get full refund before seller confirms meetup
Passkey signing — Touch ID / Face ID to authorize transactions
Gas sponsored — No ETH needed for transactions
Shareable links — Send card URLs to anyone, no app needed

Trading Card Flow

1. Seller lists "Charizard Base Set" for $50 with $10 min deposit
2. Buyer deposits $10 USDC → card is held for buyer
3. Buyer can cancel anytime before seller confirms → full $10 refund
4. Both parties meet in person to inspect card
5. Seller confirms they showed up
6. Buyer confirms AND pays $40 remaining (atomic action)
7. Backend releases total $50 to seller

Commands

Browse (no account needed)

niche search --category "Pokemon" --max-price 100
niche bro...

来源信息

Source: github
Repository: openclaw/skills
Path: skills/clementsutjiatma/niche
Version: —
Commit: 7e96789fc41e518ca788e355621b7383866d58d2
分类来源: rules
状态: active
可见性: public

这些信息来自收录时的来源分析，可能滞后；使用前请核对最新来源文件。

来源内容

SKILL.md

# Niche v1 — Trading Card Marketplace with Partial Deposits

A peer-to-peer trading card marketplace where users list, discover, and transact cards with partial USDC deposits on Base Sepolia. Meet in person to inspect cards before completing payment.

## Architecture

**Hosted backend** on Supabase Edge Functions. The CLI is a thin HTTP client — all heavy logic (auth, signing, escrow, on-chain transactions) runs server-side.

```
CLI (thin client) → Edge Functions (Supabase)
fetch() + open() niche-api (REST API)
~/.niche/auth.json niche-ui (hosted HTML pages)
@supabase/supabase-js niche-sign (passkey signing)
open (browser launcher) niche-escrow (on-chain ops)
```

**Hosted UI:** https://niche-ddq89ltdk-clement-sutjiatmas-projects.vercel.app

Anyone with the link can browse cards — no install needed.

## Why Partial Deposits + In-Person Inspection

- **Partial deposits** — Hold a card with just $10-50 deposit, not full price
- **Meet & inspect** — See the card condition in person before final payment
- **Atomic payment** — Buyer confirms + pays remaining amount in single action
- **USDC escrow** — All funds secured on-chain, released when both confirm
- **Buyer cancellation** — Get full refund before seller confirms meetup
- **Passkey signing** — Touch ID / Face ID to authorize transactions
- **Gas sponsored** — No ETH needed for transactions
- **Shareable links** — Send card URLs to anyone, no app needed

## Trading Card Flow

```
1. Seller lists "Charizard Base Set" for $50 with $10 min deposit
2. Buyer deposits $10 USDC → card is held for buyer
3. Buyer can cancel anytime before seller confirms → full $10 refund
4. Both parties meet in person to inspect card
5. Seller confirms they showed up
6. Buyer confirms AND pays $40 remaining (atomic action)
7. Backend releases total $50 to seller
```

## Commands

### Browse (no account needed)

```bash
niche search --category "Pokemon" --max-price 100
niche bro...

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