小豆支付开放平台商家接入 Skill。用于帮助商家开发者（及其 AI 编码助手）把开放平台支付接起来：RSA2 请求签名（XD-Signature-v1）、下单/重拉起/查单/关单/退款、收银页终端能力矩阵（PC 扫码 / 手机支付宝手势主按钮 / 手机微信外推荐路径 / 微信内零点击）、平台事件通知验签（XD-Webhook-v1）与 eventId 去重、**平台响应验签（XD-Response-v1）**、错误码排障、上线检查清单与凭证轮换（含密钥标识 kid 格式与本地派生）。
安装
npx skills add xiaodou-official/xiaodou-open-platform --skill skillnpx skills add xiaodou-official/xiaodou-open-platform --skill skill -a claude-code -gnpx skills add xiaodou-official/xiaodou-open-platform --skill skill -a codex -ggemini skills install https://github.com/xiaodou-official/xiaodou-open-platform.git --path skillgh skill install xiaodou-official/xiaodou-open-platform skillgit clone --depth 1 https://github.com/xiaodou-official/xiaodou-open-platform /tmp/xiaodou-official__xiaodou-open-platform
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/xiaodou-official__xiaodou-open-platform/skill ~/.claude/skills/skill # Claude Code
cp -R /tmp/xiaodou-official__xiaodou-open-platform/skill ~/.agents/skills/skill # Codex, Cursor, Gemini CLI, Copilot, OpenCode