Superbank

后端只需把 quote(from_asset, from_channel, to_asset, to_channel, amount, prefer) 包一层 HTTP，返回原样 JSON。本页用 GET 请求：

GET {endpoint}?from_asset=USDT&from_channel=TRON&to_asset=USDC&to_channel=ARC&amount=100&prefer=cost

# 资产/通道取值（settle.py 归一化口径）
# from_asset/to_asset: USDC USDT USDe USDG FDUSD USAT PYUSD
# from_channel/to_channel: TRON ARC BASE ETH ARB OP POLYGON SOLANA CELO ...
# prefer: cost（默认，按总成本升序）| time（按 ETA 升序，unknown 排最后）

响应 JSON（与 settle.py 的 quote() 返回完全一致）：

{
  "routes": [
    {
      "venue": "bridge | cctp_standard | cctp_fast | ...",
      "legs": [
        {"venue": "Bridge", "from_asset": "USDT", "from_channel": "TRON",
         "to_asset": "USDC", "to_channel": "BASE",
         "amount_in": 100, "note": "Bridge 段无事前报价，以建单回执为准"}
      ],
      "cost_breakdown": {"protocol_fee_usd": 0.35, "gas_est_usd": 0.01,
                         "fx_spread_usd": null, "total_cost_usd": 0.36},
      "eta_seconds": null,
      "support_level": "docs | tested | blocked | unknown",
      "fast_available": false,
      "risk_notes": ["托管模式：资金经 Bridge 手", "..."]
    }
  ],
  "sorted_by": "cost",
  "disclaimer": "只读报价，不执行任何资金动作"
}

badge 映射（前端按此渲染，四个维度独立）：docs→官方文档支持 · tested→已测试方向 · fast_available=true→Fast 可用 · blocked→生产阻塞；未知一律 unknown→待验证。

后端托管最小示例（Python 标准库，示例仅供参考，请自行按生产要求加固）：

import json, urllib.parse
from http.server import BaseHTTPRequestHandler, HTTPServer
import sys; sys.path.insert(0, "/home/<user>/workspace/hub-spoke")
from settle import quote  # 只读报价，不执行资金动作

class H(BaseHTTPRequestHandler):
    def do_GET(self):
        q = urllib.parse.parse_qs(urllib.parse.urlparse(self.path).query)
        try:
            out = quote(q["from_asset"][0], q["from_channel"][0],
                        q["to_asset"][0], q["to_channel"][0],
                        float(q["amount"][0]), q.get("prefer", ["cost"])[0])
            body = json.dumps(out, ensure_ascii=False).encode()
            self.send_response(200)
        except Exception as e:
            body = json.dumps({"error": str(e)}).encode()
            self.send_response(400)
        self.send_header("Content-Type", "application/json")
        self.send_header("Access-Control-Allow-Origin", "*")
        self.end_headers(); self.wfile.write(body)

HTTPServer(("127.0.0.1", 8787), H).serve_forever()

⚠️ 后端托管方式（自建服务器 / Cloudflare Worker / 本机隧道等）由你决策；本页不替你搭后端。