# Linkheft by CyberMax

> Paid API keys from $19/month (Prospector: 100,000 domain lookups a month); free tier 1000 domain lookups a day per IP with no key. Buy: https://linkheft-api.cybermax-tools.workers.dev/buy/prospector?s=lead · all plans: https://linkheft-api.cybermax-tools.workers.dev/docs#pricing. Bulk domain authority API: for up to 50 domains per call, a 0-100 authority score, the Common Crawl web-graph harmonic and PageRank ranks, host count, previous rank and trend (rising/stable/falling), Majestic Million rank, referring subnets and IPs, and found true/false. Open data (Common Crawl + Majestic Million), 10,296,726 domains. REST + MCP server.

- **Domain**: `linkheft-api.cybermax-tools.workers.dev`
- **Provider**: CyberMax (https://cybermax.cybermax-tools.workers.dev/store/)
- **A2A protocol version**: 0.3.0
- **Kind**: a2a_agent
- **Live-responds (last probe)**: True
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 100%

## Skills
- **Domain authority (bulk)** — Authority score (0-100), Common Crawl web-graph rank (harmonic + PageRank), hosts, previous rank and trend, Majestic Million rank, referring subnets and IPs for
- **Data release** — The Common Crawl web-graph release, Majestic Million date, as-of date and size of the data behind domain_authority.

## URLs
- Agent card: https://linkheft-api.cybermax-tools.workers.dev/.well-known/agent-card.json
- Page (HTML): https://agenstry.com/agents/linkheft-api.cybermax-tools.workers.dev
- Documentation: https://linkheft-api.cybermax-tools.workers.dev/docs