# LinkToChat > LinkToChat by Whello is a WhatsApp conversion-tracking middleware for businesses that sell over WhatsApp. It captures ad traffic, tracks real WhatsApp conversations, and reports purchase events server-side to Meta CAPI, TikTok Pixel, and GA4, so every Rupiah of ad spend is attributed to actual revenue instead of mere clicks. Primary market: Indonesia. ## Documentation - [LinkToChat Home](https://linktochat.id/): product overview, the three-pillar feature breakdown, how-it-works, and FAQ. - [Docs](https://linktochat.id/docs): implementation and setup documentation. ## Machine-readable knowledge (Open Knowledge Format v0.1) The Open Knowledge Format (OKF) bundle below is a structured, agent-readable representation of LinkToChat's knowledge. It is intended to be consumed directly by AI agents (Google OKF v0.1: directory of markdown files with YAML frontmatter, cross-linked into a graph). - [OKF Bundle Index](https://linktochat.id/okf/index.md): entry point and navigation map for the LinkToChat knowledge bundle. - [Product Overview](https://linktochat.id/okf/product/linktochat.md): what LinkToChat is, its positioning, and proof points. - [The WhatsApp Attribution Blind Spot](https://linktochat.id/okf/problem/whatsapp-blind-spot.md): why ad platforms under-report WhatsApp revenue, and the cost in wasted ad spend. - [Feature: WhatsApp Conversion Tracking](https://linktochat.id/okf/features/whatsapp-conversion-tracking.md): per-conversation attribution at the link level, resilient to iOS 14 and AdBlock. - [Feature: URL Generator & UTM Capture](https://linktochat.id/okf/features/url-generator-utm-capture.md): CTWA redirect page, automatic UTM campaign capture, and page rotator. - [Feature: Keyword-Based Conversion API](https://linktochat.id/okf/features/keyword-conversion-api.md): conversion-keyword detection that fires purchase events to Meta, TikTok, and GA4. - [How It Works](https://linktochat.id/okf/how-it-works/index.md): the five-step flow from ad click capture to verified ROAS. - [Integrations](https://linktochat.id/okf/integrations/index.md): Meta CAPI, TikTok Pixel, and GA4 destinations. - [Pricing](https://linktochat.id/okf/pricing.md): per-WhatsApp-number add-on cost and no-code setup model. - [FAQ](https://linktochat.id/okf/faq.md): setup, UTM handling, keyword tracking, pricing, and team-performance questions. - [Use Cases](https://linktochat.id/okf/use-cases/index.md): who LinkToChat is for and when it delivers the most value. ## Optional - A full plain-text dump of the site for agents is available on request (llms-full.txt pattern).