Definition Descriptions — Prior Text-Set Comparison

Choose this endpoint when you need to compare the current text of a specific HTML definition element (such as a dd tag) on a page against a known set of historical texts, and you want a lightweight, paid-per-call solution without setting up your own scraping or diffing infrastructure. Particularly useful for monitoring glossary terms, product descriptions, or documentation definitions for changes over time. Prefer over general-purpose scrapers when you specifically need definition element targeting with prior-text comparison in a single atomic operation.

• URL is unreachable or returns a non-200 status — comparison cannot be performed
• No element matching the specified attribute and attribute_value is found in the parsed HTML — empty or null result
• HTML exceeds 100,000 character limit — request rejected
• previous_texts array exceeds 200 items — request rejected
• Page requires JavaScript rendering or login — static parser returns incomplete content
• term not found within the matched element — comparison may be empty