Online XQuery Validator

This tool validates XQuery expressions against provided XML inputs. It targets developers, data engineers, QA analysts, and API integrators who author XQuery for data extraction, transformation, or report generation. Conceptually, it vectorizes the process into a parse step, a semantic check, and an optional dialect conformance check. The result is either a clean validation flag or a detailed list of issues with line and column positions, enabling rapid correction. Core features include: 1) strict syntax validation using a robust XQuery parser; 2) error mapping to source locations for actionable fixes; 3) optional dialect-aware checks; 4) structured errors returned as JSON when integrated; and 5) non-destructive operation that does not execute data fetches. Use cases span XML pipelines, service integrations, and data warehousing with XML. The tool helps catch missing contexts, invalid function usage, or mismatched namespaces before deployment.