Lanjing Mercado Libre Product Selection

This skill queries Mercado Libre product, catalog, keyword, category, trend, seller, review, exchange-rate, and plan-usage data through the Nexscope gateway. The gateway exposes one unified route, POST /lingdong/call, and the skill selects one of 24 supported toolName values with matching arguments.

Core Concepts

• Call only ${NEXSCOPE_PROXY_BASE}/api/v1/tools/research/lingdong/call. Do not call the upstream Lanjing XP-MCP server directly, and do not ask the user for upstream secret-key / X-API-Key -- upstream credentials are owned by the backend.
• The request body is always {"toolName":"...","arguments":{...}}. The script takes this whole object as a single JSON argument.
• Field names inside arguments must match references/mercado-tools.md exactly, including camelCase names such as siteId, itemId, productId, categoryId, runDate, runMonth, pageNo, pageSize.
• Read data first when presenting results. Read contentText when data is text or ambiguous. Show rawResponse only when the user asks for raw diagnostics.
• Paid tools currently cost 16000 tokens per call; free tools cost 0. Trust the backend costToken field.

Reference Files

• references/api.md: Nexscope gateway contract, request/response structure, error codes, and curl example.
• references/mercado-tools.md: reference for the 24 Mercado Libre tools, argument fields, site IDs, date formats, pagination, sorting, and billing status.

Tool Selection