{
 "title": "x402 付款協定（x402 Payment Protocol）是什麼？",
 "site": "AI 與科技名詞白話解釋",
 "canonical": "https://glossary.penguindriver.com/t/x402",
 "markdown": "https://glossary.penguindriver.com/t/x402.md",
 "summary": "x402 是一個建立在 HTTP 上的開放付款協定，利用長期閒置的「402 Payment Required」狀態碼，讓 API、網站與 AI 代理能按次付款。Coinbase 於 2025 年 5 月 6 日發表，常見以穩定幣 USDC 結算。",
 "date_modified": "2026-09-26",
 "retrieved": "2026-09-28",
 "content_sha256": "9ec9d587947333bf62b9ecabd459ba245c37d618e8ada4789f56233e14b12f88",
 "fingerprint_basis": "Markdown 版全文，移除贊助行與開頭 front matter，去除頭尾空白",
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  "how": "下載 text_snapshot 後計算 SHA-256，應與 content_sha256 相同；內容更新時指紋會改變"
 },
 "sources": [
  {
   "name": "Coinbase 開發者文件：How x402 works",
   "url": "https://docs.cdp.coinbase.com/x402/core-concepts/http-402"
  },
  {
   "name": "Coinbase：Introducing x402",
   "url": "https://www.coinbase.com/developer-platform/discover/launches/x402"
  },
  {
   "name": "GitHub：coinbase/x402",
   "url": "https://github.com/coinbase/x402"
  }
 ],
 "source_count": 3,
 "cite_as": {
  "zh": "x402 付款協定（x402 Payment Protocol）是什麼？｜AI 與科技名詞白話解釋。https://glossary.penguindriver.com/t/x402（資料日期 2026-09-26，擷取 2026-09-28）",
  "apa": "AI 與科技名詞白話解釋. (2026). x402 付款協定（x402 Payment Protocol）是什麼？. Retrieved 2026-09-28, from https://glossary.penguindriver.com/t/x402",
  "markdown": "[x402 付款協定（x402 Payment Protocol）是什麼？](https://glossary.penguindriver.com/t/x402)（AI 與科技名詞白話解釋，2026-09-26）"
 },
 "license": "可引用，請附上正式網址與資料日期"
}