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feat(search+docs): trigram fuzzy search, brand/country filters, developer docs
Search:
- migration 0009: trigram GIN index on brand.name + btree on country_of_origin
- SearchProducts: typo-tolerant word_similarity matching (>=0.42) on top of
  ILIKE substring + barcode; new brand/country filters; rank by
  similarity * (0.5 + quality_score). Response gains country_of_origin,
  quality_score and per-result relevance score.
- public search UI: brand/country filter inputs; show country in results

Docs:
- serve embedded OpenAPI 3 spec at GET /api/v1/openapi.json (not rate limited)
- ApiDocs page: auth + rate-limit section, updated search params/response
- docs/api.md developer guide

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
2026-06-20 09:38:27 +00:00

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OpenGoods 公共 API 开发者文档

天工商品档案公共仓(OpenGoods)提供公开、只读的商品事实 REST API:按条码/名称查询商品的客观资料(品牌、品类、净含量、产地、配料、营养成分、Nutri-Score、厂商建议零售价快照等)。返回均为 JSON(UTF-8)。本服务不含任何购买/交易接口。

  • 基础地址:https://goods.tangshasha.com/api/v1
  • 机器可读规范(OpenAPI 3):GET /api/v1/openapi.json
  • 交互式文档:站点「API 调用说明」页

鉴权

API 默认匿名可用,无需任何凭证即可调用。匿名请求按来源 IP 计入一个较低的默认每分钟额度。

如需更高额度并让用量归属到你,可向运营方申请一枚 API Key(形如 og_live_xxxxxxxx),请求时二选一携带:

curl -H "X-API-Key: og_live_xxxxxxxx" \
  "https://goods.tangshasha.com/api/v1/products/search?q=牛奶"

# 或
curl -H "Authorization: Bearer og_live_xxxxxxxx" \
  "https://goods.tangshasha.com/api/v1/products/search?q=牛奶"

仅在创建时返回一次明文 Key,请妥善保存。服务端只存储其 SHA-256 哈希。

限流

采用固定窗口限流(每分钟)。每个响应都会回写以下响应头:

响应头 含义
X-RateLimit-Limit 当前窗口允许的最大请求数
X-RateLimit-Remaining 当前窗口剩余可用次数
X-RateLimit-Reset 窗口重置的 Unix 时间戳(秒)
Retry-After 仅在超额(429)时返回,建议等待的秒数
  • 超过额度:429 Too Many Requests,错误码 rate_limited
  • Key 无效或已吊销:401 Unauthorized,错误码 invalid_api_key

错误格式

非 2xx 响应体统一为:

{ "error": { "code": "not_found", "message": "…", "request_id": "…" } }

分页

列表类接口支持 page(默认 1)与 size(默认 20,最大 100),响应含 page/size/total

端点

GET /products/search — 搜索商品

按名称做三元组(trigram)模糊搜索,可容忍错别字;支持品类/品牌/产地过滤;结果按相关度(名称相似度 × 数据质量分)排序。

参数 必填 说明
q 关键词(名称/条码),模糊匹配;留空则按质量分返回全部
category 品类编码(含子树),如 food.beverages
brand 品牌名(模糊匹配),如 Ferrero
country 产地前缀(不区分大小写),如 China
page 页码,默认 1
size 每页条数,默认 20,最大 100
curl "https://goods.tangshasha.com/api/v1/products/search?q=nutela&country=Italy"
{
  "items": [
    {
      "id": "…",
      "gtin": "3017624010701",
      "name": "Nutella",
      "brand": "Ferrero",
      "category_path": "food.snacks.chocolate",
      "country_of_origin": "Italy",
      "quality_score": 0.81,
      "score": 0.71
    }
  ],
  "page": 1,
  "size": 20,
  "total": 1
}

score 为名称相关度(提供 q 时返回,01),未提供 q 时为 null

GET /products/barcode/{gtin} — 按条码查询

curl "https://goods.tangshasha.com/api/v1/products/barcode/5449000000996"

GET /products/{id} — 商品详情

按商品 UUID 获取完整档案(含配料、营养、添加剂、图片、MSRP 等)。

GET /products/{id}/nutriments — 商品营养成分

GET /products/{id}/msrp — 厂商建议零售价快照

官方建议零售价历史快照,仅供参考,不含任何购买入口。

GET /brands — 品牌列表(分页)

GET /categories — 品类树

GET /sources/{id} — 数据来源

免责声明

数据可能存在误差或滞后,按「现状」提供,不构成医疗/购买建议。商品资料版权归各原始来源所有,请遵循其许可(如 OpenFoodFacts 的 ODbL),引用时请注明天工商品档案公共仓及原始来源。