xby-pubchem: A PubChem-Based Plugin for Medicinal Chemistry Information Extraction

The core design philosophy of DeepSeek Harness (DSH) is "Everything is a plugin," aiming to reduce the development cost of AI agents. xby-pubchem is a Web-connected utility plugin maintained by xby-skill that wraps the PubChem API to extract key data, such as molecular formulas, molecular weights, and CAS numbers, for drugs and chemical substances. The plugin provides three core functions: `set_xby_apikey` (set an API key), `get_chemical_info` (query information by name), and `search_chemical_by_cas` (query information by CAS number). Users can install it via the command line and, after obtaining an API key from the official Xiao Ben Yang website, invoke the plugin directly in a conversation to retrieve structured chemical information.