Introduction

When developing cross-border business agents, you often need to handle tasks such as HS/HTS code lookup, commercial invoice generation, exchange rate conversion, bank account validation, and EAN/UPC barcode verification. The dsh-kuajing plugin provides these capabilities, allowing developers to perform the above operations directly within a DeepSeek Harness (DSH) workflow.

Plugin Overview

This is a DSH plugin maintained by mario03690, categorized as a “web tool”. It does not run tool code locally; instead, it communicates with remote services through a configuration layer (cordis.patch.yml). The plugin is designed to address standardized processing needs in cross-border business, including tariff code lookup, international invoice creation, payment verification, and China reachability checks.

Core Features

The plugin provides the following core capabilities:
* HS/HTS code lookup and classification
* Commercial invoice generation
* Real-time exchange rate conversion
* IBAN bank account validation
* EAN/UPC barcode validation
* Converting amounts to English words
* China reachability checks
* Excel file reading and writing

Installation and Enablement

Use the official installation command to add the plugin to a specified Profile:

dsh plugin --profile <your-profile> add github:mario03690/dsh-kuajing

Typical Usage

The plugin provides a set of tools that can be invoked by describing tasks in natural language.

  • Task discovery: Describe a task (for example, “look up exchange rates”) and use what_can_you_do to retrieve available tools and how to call them.
  • Network check: Use china_reachability to check the latency, HTTP status, and DNS resolution of a target URL within China.
  • Data processing: Use read_xlsx and write_xlsx to process Excel files (via URL).
  • Validation: Use iban_validate to validate international bank accounts, or use barcode_validate to verify barcodes.
  • Document processing: Use amount_to_english to convert an amount into English words (for invoices/letters of credit).
  • Tariff lookup: Use hs_lookup to query HTS codes, or use classify_hs_code to classify a product.
  • Invoice creation: Use make_invoice to convert JSON data into a professional PDF invoice.

Use Cases and Notes

  • Operating mechanism: The plugin does not run local tool code; it contains only a configuration layer. All tool calls are made as HTTPS requests to remote services via the MCP Client.
  • Data security: Documents and prompts are processed in memory and are not persisted. Network access is limited to outbound HTTPS to ainetcafe.com.
  • Dependencies: It requires @deepseek-ai/dsh-mcp-client.
  • License: The plugin is open-sourced under the MIT License.
  • Tool list: The currently provided tool list is based on a snapshot from 2026-08-22 and may not include the latest tools.

Conclusion

This plugin is suitable for developers who need to handle cross-border payments, customs declaration, invoices, and network validation. You can view the source code and documentation in the GitHub repository.