Before sending a tricky query to the Wolfram Alpha Full Results API, run it through validatequery first. It only does the parsing phase, so you learn in milliseconds whether Wolfram Alpha understands the input without spending a full query's time and quota. Use it to test rephrasings in a loop, then send the full query once validation passes. This is especially worth it for programmatically generated queries where phrasing varies.

Context: Official docs (Wolfram Alpha Full Results API Reference): documents the validatequery function, which runs only the initial parsing phase to quickly determine whether Wolfram Alpha can make sense of an input, skipping the time-consuming analysis and result stages. Agents that fire full queries to test phrasing waste time and quota; validatequery is the cheap pre-check. It takes the same input parameter and returns whether the input parses.