入门
在 Duaer 里查国际贸易
在 Duaer 里：联合国 Comtrade 年度货物进出口：某国总额、与某一伙伴国的贸易或其主要贸易伙伴，可看全部商品或某个 HS 商品编码。一次成功查询用 1 额度。
能拿到什么
Duaer 数据市场里的「国际贸易」：联合国 Comtrade 年度货物进出口：某国总额、与某一伙伴国的贸易或其主要贸易伙伴，可看全部商品或某个 HS 商品编码。查到结果时用 1 额度，结果交给数字组织的下一个节点。
从节点创建器选 Duaer 数据 → 国际贸易，或打开 数据市场。相关：世界银行指标、IMF 经济指标。
适合做什么
- 找出某国某商品的主要出口市场或进口来源。
- 比较两国之间多年的贸易额。
在画布里检索
- 打开节点创建器，选 Duaer 数据 → International trade。
- 填 Reporter（报告国，如 CHN）；Year、Flow（export/import）、Partner（留空为主要伙伴，world 为总额）、Commodity（HS 编码）可选。
- Limit 默认 10，最大 20。执行。
查到结果才扣 1 额度；没有结果、输入有误或上游失败都不扣。
用 API 调用
- GET https://api.duaer.com/v1/data/trade?reporter=CHN&year=2023&flow=export&limit=10
- Authorization: Bearer <Duaer key>
下方是与数据市场「复制技能」相同的英文技能，含参数、示例与返回字段。
调用技能（英文）
与数据市场「复制技能」一致。
---
name: duaer-trade
description: >-
Duaer International trade. Yearly goods exports and imports from UN Comtrade: a country total, one partner, or its top partners, for all goods or one HS product code.
One successful search uses 1 Duaer credit.
---
# Duaer International trade
Duaer International trade reads the UN Comtrade public preview. Leave `partner` empty to rank top partners by value; set `partner=world` for the total.
## When to use
- Find the main export markets or import sources of a country for a product.
- Compare trade between two countries across years.
## When not to use
- Monthly data or very recent months. Annual data appears one to two years later.
- Tariffs and prices. Use https://skills.duaer.com/world-bank.md for macro indicators.
## Call
`GET https://api.duaer.com/v1/data/trade?reporter=CHN&year=2023&flow=export&limit=10`
Header: `Authorization: Bearer <Duaer key>`
Use an account key or a model API key.
Get a Duaer key: https://skills.duaer.com/keys.md
## Parameters
Provide `reporter`.
- `reporter` — Reporting country: ISO code, name, or Comtrade code, such as CHN.
- `year` — Optional. Four-digit year. Default two years ago.
- `flow` — Optional. export or import. Default export.
- `partner` — Optional. Partner country, or world for the total. Empty lists top partners.
- `commodity` — Optional. HS code such as 8542 (integrated circuits). Default all goods.
- `limit` — Optional. Rows to return, from 1 to 20. Default 10.
## Examples
- `GET https://api.duaer.com/v1/data/trade?reporter=CHN&year=2023&flow=export&limit=10` — top ten export partners of China in 2023.
- `GET https://api.duaer.com/v1/data/trade?reporter=USA&partner=CHN&commodity=8542&flow=import&year=2023` — US imports of integrated circuits from China.
## Result
The response is `{ "items": [...] }`. Each item has `source`, `title`, `url`, and `summary`, plus:
- `reporter`, `reporterCode` — reporting country and Comtrade code.
- `partner`, `partnerCode` — partner country; code 0 is World.
- `flow` — exports or imports.
- `year`, `commodity` — year and HS code (TOTAL for all goods).
- `valueUsd` — trade value in US$.
- `netWeightKg` — net weight when reported.
Fields without a value are left out.
## Credits
A search that returns at least one row uses 1 credit.
An empty search, a search that finds nothing, or a failed search uses 0.
Wrong input returns 400 with a message and uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.
## Related
- https://skills.duaer.com/world-bank.md — Duaer World Bank indicators
- https://skills.duaer.com/imf.md — Duaer IMF indicators
常见问题
Duaer 的国际贸易检索扣多少额度？
查到结果时扣 1 额度；没有结果或出错不扣。
Duaer 国际贸易默认查哪一年？
默认查两年前，因为 Comtrade 年度数据发布较晚。
同组