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Ahrefs

Free tier

AI marketing platform powered by big data — dominate search, AI, and beyond

Free tier available·All audiences·Powered by Anthropic (Claude), Google (Gemini), others·API available

Key strengths

World's #1 SEO crawler with industry-leading backlink and keyword databasesAI agent (Agent A) with unrestricted access to all Ahrefs dataComprehensive all-in-one platform: SEO, content, PPC, brand, social, and localAI search visibility tracking across LLMs (Brand Radar, Custom Prompts)Enterprise-grade infrastructure with 100+ API endpoints and ISO27001 certification
Free tier + paid plans
Singapore, Singapore
Founded 2010
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Ahrefs Developer & API Documentation

API Access

Ahrefs provides 100+ API endpoints available to Enterprise plan subscribers. The API enables programmatic access to backlink data, keyword metrics, organic traffic estimates, domain ratings, and more.

# Example: Fetch organic keywords for a domain
GET https://api.ahrefs.com/v3/site-explorer/organic-keywords
  ?select=keyword,volume,traffic,position
  &target=example.com
  &mode=domain
  &limit=100
Authorization: Bearer YOUR_API_TOKEN

MCP Integration (Agent A)

Ahrefs supports the Model Context Protocol (MCP), allowing you to connect Ahrefs data directly to AI assistants like ChatGPT, Claude, or Copilot. Agent A — Ahrefs' own AI marketing agent — leverages MCP for unrestricted, non-rate-limited access to all platform data.

Key Integration Points

  • Google Search Console (GSC): Native integration via GSC Insights for blended organic performance data.
  • Data Studio Connectors: Push Ahrefs data into Looker Studio / Google Data Studio dashboards.
  • IndexNow: Automated URL submission for instant search engine indexing.
  • Bot Analytics: Structured logs of good/bad bot activity for crawl budget optimization.

Authentication & Security

  • OAuth 2.0 / API token-based authentication
  • Single Sign-On (SSO) and Two-Factor Authentication (2FA) supported
  • ISO 27001 certified for enterprise security compliance