XML Fetch Validator

The XML fetch validator checks XML retrieved from a URL or provided as text, ensuring well-formedness and optional schema conformance. It is designed for developers, QA engineers, data engineers, and API integrators who ingest XML in services, data feeds, or configuration files. Use during integration testing, data validation, or pre-deployment checks to catch malformed XML before processing. It supports validating API responses, message queues, feed endpoints, and configuration payloads prior to ingestion, with precise diagnostics to speed debugging and contract verification in automated pipelines.
Under the hood, the tool uses a standards-compliant XML parser to report exact line and column positions for errors and can perform optional schema validation against XSD or RELAX NG. You can provide a schema URL or inline schema, and enable secure parsing settings to disable external entity expansion and limit DTD processing. Outputs are structured for automation: is_valid, errors, and timing metrics for integration into CI or monitoring workflows.
The validator is designed to handle varied inputs, enforce size and timeout boundaries, and return machine-friendly results, including detailed error codes and positions for rapid remediation. It is suitable for API contract validation, data ingestion pipelines, and configuration validation across development and production environments.
Use cases include ensuring API responses conform to contracts, validating XML feeds before processing, and checking configuration payloads for correctness prior to deployment.