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Blog Cannibalization - Keyword Overlap Detection · agricidaniel | DecimalAI

marketingby agricidaniel

Blog Cannibalization - Keyword Overlap Detection

agricidaniel/blog-cannibalization

Source agricidaniel/claude-blog ↗License MIT

Detect keyword cannibalization across blog posts by extracting primary keywords from titles and headings, clustering semantically similar targets, and flagging posts competing for the same search intent. Supports local-only mode (grep-based) and DataForSEO API mode (Page Intersection endpoint at ~$0.01/call). Outputs severity-scored report with merge or differentiate recommendations.

SkillScore80Maintained

Automatic

Marketing & Content pack

Last verified 8/12/2026

What it changes

Passed 18 of 23 test cases with the skill, and 13 of 23 without it.

Without skill56%

With skill80%

Checks it passed that the model alone missed

Assigns a severity rating of High.
Assigns a severity rating of Critical.
Assigns the recommendation DIFFERENTIATE.

and 6 more in the full report

7 fixed13 passed either way4 still failing1 broke

Pass-rate lift: +24 pp
Tokens: +68%
Agent turns: 0%
Response time: -46%

Model Measured 8/12/2026v1 · latest is v320 of 25 cases passed with skill · 23 comparable

Tokens, turns and time describe resource use, not a dollar price.

This benchmark measured an earlier version of the skill.

A newer attempt on gemini-3.8-flash on 10/19/2026 did not produce a publishable comparison (not comparable). The snapshot above is the previously measured run.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/agricidaniel-blog-cannibalization/SKILL.md https://app.decimal.ai/s/agricidaniel-blog-cannibalization/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add agricidaniel-blog-cannibalization, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/agricidaniel-blog-cannibalization/ and pins it in .decimal/skills.lock

decimalai skills add agricidaniel-blog-cannibalization

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/agricidaniel-blog-cannibalization/SKILL.md https://app.decimal.ai/s/agricidaniel-blog-cannibalization/SKILL.md

Raw file: /s/agricidaniel-blog-cannibalization/SKILL.md ↗ · machine-readable summary at /s/agricidaniel-blog-cannibalization.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 7

Prompt

Post A (`/tools/crm`) and Post B (`/software/crm`) both have the exact primary keyword phrase 'best crm software'. There is no SERP position data available. What local severity level should be assigned?

What was checked, without and with the skill
Checked	Without skill	With skill
Assigns a severity rating of Critical.	Missed	Passed

case-07 · gemini-3.6-flash · 8/12/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md208 linessingle file

Blog Cannibalization - Keyword Overlap Detection

Detect when multiple blog posts compete for the same search keywords. Two modes: local-only analysis (default) and DataForSEO API mode for SERP-level data.

Two Modes

Mode	Flag	Cost	Data Source
Local	(default)	Free	File content analysis via Grep/Read
API	`--api`	~$0.01/call	DataForSEO Page Intersection + Ranked Keywords

Local mode works without any API keys. API mode requires DataForSEO credentials set as environment variables: DATAFORSEO_LOGIN and DATAFORSEO_PASSWORD.

Local Mode Workflow

Step 1: Scan Blog Files

Use Glob to find all content files in the target directory:

Patterns: **/*.md, **/*.mdx, **/*.html
Skip files in node_modules/, .git/, drafts/

Step 2: Extract Primary Keywords

For each file, read and extract keyword signals from:

Title tag or H1 heading (highest weight)
H2 headings (medium weight)
First paragraph (supporting signal)
Meta description if present in frontmatter

Primary keyword extraction method:

Tokenize title, H1, H2s, meta description, and first paragraph into 1-gram, 2-gram, and 3-gram phrases.
Normalize deterministically: lowercase, remove locale-aware stop words, lemmatize or stem consistently, preserve product names, and keep intent modifiers such as "best", "pricing", "vs", "review", "template", and year.
Score sections separately: title/H1 highest, meta description and H2s medium, first paragraph supporting.
Select the top-scoring 2-3 word phrase as the primary keyword and record

Track record

Benchmark

18 / 23

test cases passed, vs 13 / 23 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v6 — 10/16/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

agricidaniel / claude-blog

skills/blog-cannibalization/SKILL.md

View on GitHub ↗

License MITImported 10/16/2026Version v3

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Blog Cannibalization - Keyword Overlap Detection

Two Modes

Local Mode Workflow

Step 1: Scan Blog Files

Step 2: Extract Primary Keywords

Track record

Benchmark

Adoption

SkillSafety

Source

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