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ZensInk is an SEO workbench for indie builders and small teams. It runs on free-tier data sources (Google Search Console, Bing Webmaster, SERP APIs) instead of expensive backlink databases, and it exists as a Python CLI you can run anywhere.

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The free toolkit

The open-source CLI (pip install zens-ink) covers the core SEO loop with zero paid dependencies:
  • Keyword research via Google Autocomplete fan-out
  • Search volume lookups (Bing Webmaster API)
  • SERP-structure keyword difficulty, including brand-term detection and entry difficulty
  • Technical site audit — broken links, metadata, structured data, GEO readiness
  • Search-intent classification (keyword-based and SERP-based, cross-validated)
  • GEO Score — a 16-dimension AI-search citability audit
  • An MCP server exposing every tool (python3 -m zens_ink.mcp)

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Pro and services

The paid tier turns the data tools into workflows: winability scoring from your own GSC data, competitor radar, content radar, and agent-readiness audits. There is also a done-for-you tier (keyword scan, technical audit, competitor gap) for people who want the result rather than the tool. See zens.ink/pricing.

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Where ZensInk docs live

Product documentation, tutorials, and the changelog stay on the canonical site under zens.ink/docs (English, with Chinese, Japanese, and Spanish editions). This page is the lab-level overview.