# hap.io

> hap.io provides free traffic estimates for websites and apps. Each website has a server-rendered report page at https://hap.io/site/{domain} and each tracked app at https://hap.io/app/{slug}. Figures are estimates, shown with ranges, updated weekly. hap.io does not publish traffic channel splits, demographics, or app active-user figures.

## Data access for agents

- Per-domain JSON: GET https://hap.io/api/v1/domain/{domain}.json returns {domain, found, rank, monthly_visits, range_low, range_high, tier, referring_networks}.
- Full dataset: 256 sharded JSON files at https://hap.io/data/shards/{xx}.json, where xx is the FNV-1a 32-bit hash of the domain mod 256 as two lowercase hex digits. Each shard maps domain -> {r: global rank, v: estimated monthly visits, lo/hi: range, t: tier (1 = full estimate, 2 = extended coverage), rd: referring networks}.
- Top websites (JSON): https://hap.io/data/top.json
- Dataset build info: https://hap.io/data/meta.json
- Full agent guide: https://hap.io/agents.md

## Pages

- Home / search: https://hap.io/
- Website report: https://hap.io/site/{domain} (e.g. https://hap.io/site/nytimes.com)
- App report: https://hap.io/app/{slug} (e.g. https://hap.io/app/whatsapp)
- About the data: https://hap.io/about
- For AI agents: https://hap.io/agents
- Sitemap: https://hap.io/sitemap.xml