Index

Verid Documentation

Verid is a developer-first web change-detection API. Monitor any URL and receive structured webhook notifications when content changes.

What is Verid?

Verid watches web pages, JSON APIs, and RSS feeds for you — extracting exactly the fields you care about and delivering notifications when they change.

Key features:

  • Six extraction methods: CSS selectors, XPath, JSONPath, regex, full-page hashing, AI/LLM
  • Nine diff predicates: Fire only when specific conditions are met (price drops by 5%, field equals a value, regex matches, AND/OR composites, etc.)
  • Reliable delivery: Webhooks, Slack, Discord, and email with 6 automatic retry attempts on failure
  • Three-layer fetching: Static fetch → stealth headless browser → residential proxy network for bot-protected sites
  • REST API + SDK: Full REST API with OpenAPI 3.1 spec and official Node.js SDK (@verid/sdk)
  • 15 ready-made templates: Get started in seconds for GitHub releases, npm/PyPI versions, CoinGecko prices, stock prices, sitemaps, RSS feeds, and more

Quick links

  • Quickstart — Create your first monitor in 2 minutes
  • Extraction methods — CSS, XPath, JSONPath, regex, full-page, and LLM
  • Predicates — All nine diff conditions and how to combine them
  • API Reference — Full REST API documentation
  • Webhooks — How to receive and verify webhook deliveries
  • Recipes — Common use-case examples
ExtractionPredicates