# Wrendex > Wrendex is a technical SEO auditing service: a crawler plus 170+ automated checks across 22 categories, continuous monitoring with scheduled re-crawls, and alerts routed to email, Slack, Microsoft Teams, and PagerDuty. Nothing escapes the Wren. This site (https://wrendex.com) holds the product pages, the check catalog, and the documentation. The application, the REST API, and the MCP server live at https://app.wrendex.com. Machine-readable API discovery is published at https://wrendex.com/.well-known/api-catalog (RFC 9727) and agent guidance at https://wrendex.com/agents.md. ## Product - [Features](https://wrendex.com/features): What the crawler checks, how monitoring and alerting work, and the reports it produces. - [Pricing](https://wrendex.com/pricing): Subscription tiers, one-time crawl credit packs, and the cost calculator. - [Check catalog](https://wrendex.com/catalog): Every check Wrendex runs, each with a what / why / how to fix guide at /catalog/. - [Use cases](https://wrendex.com/use-cases): Agencies, in-house SEO teams, enterprise, ecommerce, and release reviews. - [Changelog](https://wrendex.com/changelog): Shipped features and new checks, newest first. - [Status](https://wrendex.com/status): Live service status and uptime history. ## Docs - [Quickstart](https://wrendex.com/docs/quickstart): Run your first audit, claim a workspace, and read the report in under five minutes. - [Core concepts](https://wrendex.com/docs/concepts): Workspaces, sites, audits, runs, and the difference between an alert and a finding. - [Verifying ownership](https://wrendex.com/docs/verifying-ownership): Two ways to prove ownership: a DNS TXT record or a meta tag in the head. - [Alert channels overview](https://wrendex.com/docs/channels-overview): Email on every plan; Slack and Teams on Pro and above; PagerDuty on Agency. - [Composing alert rules](https://wrendex.com/docs/alert-rules): Compose rules from severity, category, page-set, and threshold. Route per rule to one or more channels. - [Catalog reference](https://wrendex.com/docs/catalog-reference): Every check Wrendex runs lives in the catalog with a 'what / why / how to fix' guide. - [Rate limits and crawl etiquette](https://wrendex.com/docs/rate-limits): How fast Wrendex crawls, how to throttle it, and how to allow-list our crawler. - [API and MCP server](https://wrendex.com/docs/api): Bearer token authentication, the endpoints that need no token, and how to connect an AI assistant over the Model Context Protocol. ## API and agents - [API and MCP server](https://wrendex.com/docs/api): Bearer token authentication, the public endpoints, and how to connect an MCP client. - [MCP endpoint](https://app.wrendex.com/mcp): Streamable HTTP MCP server. Requires an Authorization: Bearer wrn_... token. - [API catalog](https://wrendex.com/.well-known/api-catalog): RFC 9727 linkset describing the REST API and MCP server. - [Agent guide](https://wrendex.com/agents.md): How AI agents should authenticate, discover, and behave on Wrendex. ## Optional - [Wrendex vs Ahrefs](https://wrendex.com/compare/ahrefs): Feature and pricing comparison against Ahrefs Site Audit. - [Wrendex vs Sitebulb](https://wrendex.com/compare/sitebulb): Feature and pricing comparison against Sitebulb. - [Wrendex vs Screaming Frog](https://wrendex.com/compare/screaming-frog): Feature and pricing comparison against Screaming Frog. - [SEO audits by industry](https://wrendex.com/seo-audit): Ecommerce, SaaS, real estate, publishers, marketplaces, and local business. - [Security](https://wrendex.com/security): Data handling, hosting region, and how to report a vulnerability. - [About](https://wrendex.com/about): Who builds Wrendex and why. - [Privacy policy](https://wrendex.com/legal/privacy): How personal data is processed. - [Terms of service](https://wrendex.com/legal/terms): The agreement that governs use of the service.