Customs Overview Trend

Query import/export trade trend data from customs data using the UpKuaJing Open Platform API.

Overview

This skill provides monthly import/export trade volume trend data from UpKuaJing's customs database. Given a time range (start and end months), it returns a paginated list of monthly trade totals, allowing you to analyze trade patterns and seasonal trends.

Running Scripts

Environment Setup

Check Python: python --version
Install dependencies: pip install -r requirements.txt

Script directory: scripts/*.py Run example: python scripts/*.py

Important: Always use direct script invocation like python scripts/customs_overview_trend.py. Do NOT use shell compound commands like cd scripts && python customs_overview_trend.py

Trend Query (`customs_overview_trend.py`)

Return granularity: One record per month
Use cases: Analyze trade trends over time, identify seasonal patterns, compare month-over-month trade volumes
Examples:
- "Show trade trend from China to US from Jan to Dec 2025"
- "Get monthly trade volume between CN and US in 2025"
Parameters: See Trend API

API Key and Top-up

This skill requires an API key. The API key is stored in the ~/.upkuajing/.env file:

cat ~/.upkuajing/.env

Example file content:

UPKUAJING_API_KEY=your_api_key_here

API Key Not Set

First check if the ~/.upkuajing/.env file has UPKUAJING_API_KEY; If UPKUAJING_API_KEY is not set, prompt the user to choose:

User has one: User provides it (manually add to ~/.upkuajing/.env file)
User doesn't have one: You can apply using the interface (auth.py --new_key), the new key will be automatically saved to ~/.upkuajing/.env Wait for user selection;

Account Top-up

When API response indicates insufficient balance, explain and guide user to top up:

Create top-up order (auth.py --new_rec_order)
Based on order response, send payment page URL to user, guide user to open URL and pay, user confirms after successful payment;

Get Account Information

Use this script to get account information for UPKUAJING_API_KEY: auth.py --account_info

API Key and UpKuaJing Account

Newly applied API key: Register and login at UpKuaJing Open Platform, then bind account

Fees

All API calls incur fees, different interfaces have different billing methods.

Latest pricing: Users can visit Detailed Price Description Or use: python scripts/auth.py --price_info (returns complete pricing for all interfaces)

Query Billing Rules

Billed by number of calls, each call returns one page of trend data:

Each API call incurs a fee
Before execution:
1. Inform user that this query will incur a fee
2. Stop, wait for explicit user confirmation in a separate message, then execute script

Fee Confirmation Principle

Any operation that incurs fees must first inform and wait for explicit user confirmation. Do not execute in the same message as the notification.

Workflow

Decision Guide

| User Intent | Use API | |-------------|---------| | "Show monthly trade trend from China to US in 2025" | Trend Query | | "Get trade volume for each month between CN and US" | Trend Query | | "Compare trade volumes month over month" | Trend Query |

Usage Examples

Query Trade Trend

User request: "Show trade trend from China to US from Jan to Dec 2025"

python scripts/customs_overview_trend.py --params '{"originCountryCode":"CN","arrivalCountryCode":"US","startDate":202501,"endDate":202512}'

Query the next page:

python scripts/customs_overview_trend.py --params '{"originCountryCode":"CN","arrivalCountryCode":"US","startDate":202501,"endDate":202512,"cursor":"eyJzdGFydCI6MH0="}'

Query for a specific quarter:

python scripts/customs_overview_trend.py --params '{"originCountryCode":"CN","arrivalCountryCode":"US","startDate":202501,"endDate":202503}'

Error Handling

API key invalid/non-existent: Check UPKUAJING_API_KEY in ~/.upkuajing/.env file
Insufficient balance: Guide user to top up
Invalid parameters: Must first check the corresponding API documentation in references/ directory, get correct parameter names and formats from documentation, do not guess

API Documentation Reference

Trend: Check references/customs-overview-trend-api.md

Best Practices

Check API documentation:
- Before executing queries, must first check the corresponding API reference documentation
- Check references/customs-overview-trend-api.md
- Do not guess parameter names, get accurate parameter names and formats from documentation
Date format:
- Use 6-digit year-month format (e.g., 202501 for January 2025)
- startDate and endDate are both required
Pagination:
- Use the cursor parameter from the response to fetch the next page
- If no cursor is returned, there are no more pages
Cross-skill usage:
- Use customs-overview-summary for high-level annual figures, then this skill for monthly breakdown
- Combine with customs-company-trends for company-level trend analysis

Notes

startDate and endDate are both required parameters
tradeDate in the response is in year-month format (e.g., 202501)
tradeTotal is the total trade volume for that month
File paths use forward slashes on all platforms
Prohibit outputting technical parameter format: Do not display code-style parameters in responses, convert to natural language
Do not estimate or guess per-call fees — use python scripts/auth.py --price_info to get accurate pricing information
Do not guess parameter names, get accurate parameter names and formats from documentation

Related Skills

Other UpKuaJing skills you might find useful:

customs-overview-summary — Query trade overview summary (aggregated)
customs-overview-trade-list — Query country trade list with paginated breakdown
customs-overview-top-n — Query top N suppliers or buyers
customs-overview-us-import — Query US import transaction statistics
customs-overview-date — Query date reference information
customs-company-stats — Query company basic trade statistics
customs-company-trends — Query company trade trends (monthly breakdown)
customs-company-partner-stats — Query company trade partner distribution
customs-company-area-stats — Query company trade area statistics (aggregated)
upkuajing-customs-trade-company-search — Search customs trade companies