Fix Keyword Cannibalization Using Google Search Console

Unlike keyword-cannibalization prompts and SEO-tool reports that only show "2 URLs rank for this keyword", this skill runs a bundled script on your own Search Console query + page export. It scores each competing query by how the clicks are split, then gives every page pair a single action: MERGE (301), CANONICAL, DIFFERENTIATE or MONITOR. It never merges a blog post into a category page, and every number comes from your export.

Sample run (bundled demo export, fictional StrideLab store, real script output v1.0.1, 21 Oct 2026):

1. Rows read 28 · queries 16 · cannibalised queries 7 (HIGH 1, MEDIUM 3, LOW 3) · page pairs 8
2. HIGH 13.2 "best running shoes for flat feet": 3 URLs, the primary holds 64% of 66 clicks, spread 7.4 positions
3. /blog/replace-running-shoes <> /blog/shoe-lifespan: 86% overlap → MERGE (301 the weaker page after checking backlinks + conversions)
4. /blog/flat-feet-running-shoes <> /shoes/stability: blog vs category → DIFFERENTIATE (keep both)
5. /blog/clean-running-shoes vs /blog/clean-running-shoes/: URL variants → CANONICAL
6. /blog/best-running-shoes-2026 <> /shoes/stability: 14% overlap → MONITOR

Real-world spot check (Brave Search top 20, US English, 21 Oct 2026, not Google; public pages; not affiliated): for "content cannibalization seo", nightwatch.io ranks two of its own posts, /blog/content-cannibalization/ at #5 and /blog/keyword-cannibalization/ at #16. Two URLs from one site in the top 20 is only a hypothesis. This skill confirms or rejects it with the site's own GSC clicks and impressions before anyone merges anything.

Works in Claude Code, Cursor and Codex · SKILL.md + 1 Python script (stdlib only, no network, no API keys, no Google login) · same export → same answer · v1.0.1, updated 21 Oct 2026 · questions answered via Agensi messages within 24h · Run it on 100k+ rows in the cloud with our Apify actor (first 5 issues free per run): https://apify.com/cygnix_labs/keyword-cannibalization-finder · Free no-API-key SEO MCP server with a GSC cannibalization tool: https://github.com/cygnixlabs-cmd/cygnix-seo-mcp

What it does

• Reads a Search Console export with query AND page columns (API, Search Analytics for Sheets, Looker Studio or BigQuery bulk export). templates/gsc-query-page-export-steps.md shows how to get one.
• Scores each cannibalised query HIGH / MEDIUM / LOW: (1 − primary URL's click share) × log10(impressions). It names the winning URL and the position spread.
• Catches technical duplicates (trailing slash, case, index.html, utm/gclid parameters) that only need a canonical.
• Pairs competing pages and picks one action for each pair: MERGE (same section, 50%+ overlap, the stronger page wins), DIFFERENTIATE (blog vs category, or 20–49% overlap), CANONICAL or MONITOR (under 20%).
• Plans the fix and the proof: a fix playbook (301, re-angle, canonical, internal-link anchors) and a re-check 4–8 weeks later on the same date range.

Who it's for

SEO leads, agencies and bloggers with years of overlapping posts who want evidence before they merge or prune. It is not a rank tracker, and it never deletes pages: every merge goes through a 301.

Pairs well with (Cygnix Labs, on Agensi)

• Find Decaying Pages: GSC Triage + Content Refresh Plan (agensi.io/skills/find-decaying-pages-gsc-triage-content-refresh-plan): for pages losing traffic after the fix
• Search Console Quick Wins: Striking-Distance + CTR Fixes (agensi.io/skills/search-console-quick-wins-striking-distance-ctr-fixes): from the same GSC export
• SERP Intent Mapper — Keyword → Page Type Match (agensi.io/skills/serp-intent-mapper-keyword-page-type-match): decides which page type should own the query
• Plan 301 Redirects for a Site Migration Without Losing SEO (agensi.io/skills/plan-301-redirects-for-a-site-migration-without-losing-seo): for the merges
• Find Orphan Pages and Fix Your Internal Linking (agensi.io/skills/find-orphan-pages-and-fix-your-internal-linking): re-points links to the kept page
• Keyword Clusters + Intent Map: No Paid SEO Tool Needed (agensi.io/skills/keyword-clusters-intent-map-no-paid-seo-tool-needed): plans new pages so they don't overlap