seo-cluster

Semantic Clustering

Method

1. Take seed keyword (e.g. "claude code")
2. Fetch SERP for seed via WebFetch/fuse-browser (top 10 results)
3. For each related keyword (autocomplete + "People Also Ask"):
   • Fetch its SERP
   • Compute overlap with seed's SERP (Jaccard index)
4. Group keywords where SERP overlap ≥ 30% → same cluster
5. Cluster center = highest-volume keyword

Output

# Cluster: "claude code"

## Pillar: claude code (vol: 12K, KD: 45)
- Intent: informational
- Featured: AI Overview, video

## Cluster pages
1. claude code installation (vol: 2.4K)
2. claude code vs cursor (vol: 1.8K)
3. claude code mcp servers (vol: 900)
4. claude code hooks (vol: 720)

Cluster by Buyer State (2026)

SERP overlap is the mechanical signal; the strategic axis is buyer state + intent, not surface similarity. Map each cluster keyword to a layer, then group by layer:

Layer	State	Intent signal
L1	Awareness	"what is", "why", problem framing
L2	Comparison	"vs", "alternatives", "best for"
L3	Evaluation	"pricing", "reviews", "worth it"
L4	Decision	"buy", "near me", "demo", "signup"

Two keywords with high SERP overlap but different buyer states belong to different pages. Never merge clusters on lexical similarity alone.

Citation eligibility

AI Overviews capture ~30-60% of informational (L1/L2) CTR. For those layers, prioritize pages that produce verbatim-extractable answers per section over raw ranking — the goal is the LLM citation, not only the blue link.

Local vs Global Intent (2026)

Axis	LOCAL intent	GLOBAL intent
Type	Proximity transactional/navigational ("near me", "[service] [city]")	Informational / comparative
SERP feature	Triggers the Map Pack	AI Overviews-heavy
AI Overviews exposure	Resists (local results stay link-driven)	CTR eroded -40% to -58% on informational keywords
Target page	Local page / city hub	Global pillar

One intent = one URL. Split a local page from the global/pillar page when local volume and content justify it. Do not split if local volume is below ~30 searches/month, or if you cannot write 1200+ words genuinely distinct from the pillar.

Anti-Cannibalization Check

Before creating cluster pages, verify no existing page targets the same buyer state + intent. Use seo-content skill. The primary keyword is exclusive per page — pillar = [service] (no city), local = [service] [city]. See seo-internal-linking for the pillar/local/region URL architecture and link mesh.