| GET | /admin/billing/alerts | 列出用量告警（管理端） | 详情 → |
| POST | /admin/billing/alerts | 创建用量告警（管理端） | 详情 → |
| DELETE | /admin/billing/alerts/{alert_id} | 删除用量告警（管理端） | 详情 → |
| PUT | /admin/billing/alerts/{alert_id} | 更新用量告警（管理端） | 详情 → |
| GET | /admin/billing/credit-balance/{tenant_id} | 查询租户信用余额（管理端） | 详情 → |
| DELETE | /admin/billing/credit-note/{number} | 删除红字发票 | 详情 → |
| GET | /admin/billing/credit-note/{number} | 获取红字发票详情 | 详情 → |
| PUT | /admin/billing/credit-note/{number} | 作废红字发票 | 详情 → |
| GET | /admin/billing/credit-notes | 信用票据列表 | 详情 → |
| GET | /admin/billing/credit-transactions/{tenant_id} | 查询信用交易记录（管理端） | 详情 → |
| DELETE | /admin/billing/dunning-settings/{tenant_id} | 删除催缴配置 | 详情 → |
| GET | /admin/billing/dunning-settings/{tenant_id} | 获取催缴配置 | 详情 → |
| PUT | /admin/billing/dunning-settings/{tenant_id} | 配置催缴策略 | 详情 → |
| GET | /admin/billing/integrity/{subscription_id} | 验证计费事件账本完整性 | 详情 → |
| POST | /admin/billing/invoice/{invoice_number}/credit-note | 创建红字发票 | 详情 → |
| GET | /admin/billing/metered-usage/{tenant_id} | 计量计费记录 | 详情 → |
| GET | /admin/billing/payment-gateways | 支付网关列表 | 详情 → |
| POST | /admin/billing/payment-gateways | 创建支付网关 | 详情 → |
| DELETE | /admin/billing/payment-gateways/{gateway_id} | 删除支付网关 | 详情 → |
| GET | /admin/billing/payment-gateways/{gateway_id} | 获取支付网关详情 | 详情 → |
| PUT | /admin/billing/payment-gateways/{gateway_id} | 更新支付网关 | 详情 → |
| GET | /admin/billing/plans | 获取套餐定价列表 | 详情 → |
| POST | /admin/billing/plans | 创建套餐定价 | 详情 → |
| DELETE | /admin/billing/plans/{plan_id} | 删除套餐定价 | 详情 → |
| PUT | /admin/billing/plans/{plan_id} | 更新套餐定价 | 详情 → |
| PATCH | /admin/billing/plans/{plan_id}/feature-gates | 更新套餐功能开关 | 详情 → |
| DELETE | /admin/billing/records/{record_id} | 作废计费记录 | 详情 → |
| GET | /admin/billing/records/{tenant_id} | 获取计费记录（管理端） | 详情 → |
| POST | /admin/billing/refund-approval | 提交退款审批 | 详情 → |
| DELETE | /admin/billing/refund-approval/{approval_id} | 删除退款审批 | 详情 → |
| GET | /admin/billing/refund-approval/{approval_id} | 获取退款审批状态 | 详情 → |
| POST | /admin/billing/refund-approval/{approval_id}/approve | 审批通过退款 | 详情 → |
| POST | /admin/billing/refund-approval/{approval_id}/execute | 执行退款审批 | 详情 → |
| POST | /admin/billing/refund-approval/{approval_id}/reject | 拒绝退款审批 | 详情 → |
| GET | /admin/billing/refund-approvals | 查询退款审批列表 | 详情 → |
| GET | /admin/billing/revenue-amortization | 收入递延报表 | 详情 → |
| GET | /admin/billing/statistics/{tenant_id} | 获取租户统计（管理端） | 详情 → |
| DELETE | /admin/billing/subscription/{tenant_id} | 取消订阅 | 详情 → |
| GET | /admin/billing/subscription/{tenant_id} | 获取订阅信息（管理端） | 详情 → |
| PUT | /admin/billing/subscription/{tenant_id} | 更新订阅配置 | 详情 → |
| GET | /admin/billing/subscription/{tenant_id}/apps | 列出应用定价列表 | 详情 → |
| DELETE | /admin/billing/subscription/{tenant_id}/apps/{app_id}/pricing | 删除应用定价 | 详情 → |
| GET | /admin/billing/subscription/{tenant_id}/apps/{app_id}/pricing | 获取应用定价 | 详情 → |
| POST | /admin/billing/subscription/{tenant_id}/apps/{app_id}/pricing | 配置应用定价 | 详情 → |
| POST | /admin/billing/subscription/{tenant_id}/cancel-trial | 取消试用期 | 详情 → |
| POST | /admin/billing/subscription/{tenant_id}/change-plan | 变更套餐 | 详情 → |
| POST | /admin/billing/subscription/{tenant_id}/extend-trial | 延长试用期 | 详情 → |
| POST | /admin/billing/subscription/{tenant_id}/rollback-plan | 回滚套餐 | 详情 → |
| GET | /admin/billing/subscriptions | 订阅列表 | 详情 → |
| GET | /admin/billing/tax-export | 税务导出 | 详情 → |
| GET | /admin/billing/tax-exports | 税务导出列表 | 详情 → |
| PUT | /admin/billing/usage-stats/{tenant_id}/{usage_id} | 更新使用统计 | 详情 → |
| GET | /admin/billing/usage/{tenant_id}/current | 获取当前使用量（管理端） | 详情 → |
| GET | /admin/billing/usage/{tenant_id}/endpoints | 获取端点用量TopN排行（管理端） | 详情 → |
| GET | /admin/billing/usage/{tenant_id}/timeline | 获取用量时间序列（管理端） | 详情 → |
| GET | /billing/alerts | 列出用量告警 | 详情 → |
| POST | /billing/alerts | 创建用量告警 | 详情 → |
| DELETE | /billing/alerts/{alert_id} | 删除用量告警 | 详情 → |
| GET | /billing/alerts/{alert_id} | 获取用量告警详情 | 详情 → |
| PUT | /billing/alerts/{alert_id} | 更新用量告警 | 详情 → |
| GET | /billing/balance | 查询钱包余额 | 详情 → |
| GET | /billing/credit-balance/{tenant_id} | 查询租户信用余额 | 详情 → |
| GET | /billing/credit-transactions/{tenant_id} | 查询信用交易记录 | 详情 → |
| GET | /billing/invoice/{invoice_number} | 获取发票详情 | 详情 → |
| GET | /billing/invoice/{invoice_number}/export | 导出发票 | 详情 → |
| GET | /billing/invoice/{invoice_number}/pdf | 下载发票PDF | 详情 → |
| GET | /billing/plans | 获取公开套餐列表 | 详情 → |
| POST | /billing/prorations/calculate/{tenant_id} | 预览套餐变更按比例费用 | 详情 → |
| GET | /billing/records/{tenant_id} | 获取计费记录 | 详情 → |
| GET | /billing/records/{tenant_id}/apps/{app_id} | 按应用获取计费记录 | 详情 → |
| GET | /billing/records/{tenant_id}/search | 高级搜索计费记录 | 详情 → |
| GET | /billing/statistics/{tenant_id} | 获取租户统计 | 详情 → |
| GET | /billing/statistics/{tenant_id}/apps/{app_id} | 按应用获取租户统计 | 详情 → |
| POST | /billing/subscribe | 订阅服务 | 详情 → |
| GET | /billing/subscription/{tenant_id} | 获取订阅信息 | 详情 → |
| GET | /billing/usage/{tenant_id} | 获取使用统计 | 详情 → |
| GET | /billing/usage/{tenant_id}/apps/{app_id} | 按应用获取使用统计 | 详情 → |
| GET | /billing/usage/{tenant_id}/apps/{app_id}/current | 按应用获取当前使用量 | 详情 → |
| GET | /billing/usage/{tenant_id}/current | 获取当前使用量 | 详情 → |
| GET | /billing/usage/{tenant_id}/endpoints | 获取端点用量TopN排行 | 详情 → |
| GET | /billing/usage/{tenant_id}/timeline | 获取用量时间序列 | 详情 → |
