keyword-cluster-builder

keyword-cluster-builder is a skill for Claude Code, Codex from nicepkg/ai-workflow. It costs 37 tokens per session (638 once invoked), scanned A, original, MIT.

A keyword research tool that expands starting search terms, groups related terms by topic and search purpose, and maps them to stages of a customer's journey. A topic cluster is a group of related pages built around one broader main topic.

In plain words
What is it for?
Use it to build keyword lists, plan content calendars, design pillar pages with supporting articles, map topics to funnel stages, and find gaps in search coverage.
Why use it?
It helps turn a small list of ideas into an organised content plan. It can expose missing topics and show whether terms are meant for learning, comparison, navigation, or buying.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/nicepkg/ai-workflow/keyword-cluster-builder
Any agent
npx skills add nicepkg/ai-workflow --skill keyword-cluster-builder
Clone the repo
git clone --depth 1 https://github.com/nicepkg/ai-workflow

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for keyword-cluster-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/nicepkg/ai-workflow/keyword-cluster-builder.svg)](https://agentmods.dev/skills/nicepkg/ai-workflow/keyword-cluster-builder)
Your own site
<a href="https://agentmods.dev/skills/nicepkg/ai-workflow/keyword-cluster-builder"><img src="https://agentmods.dev/badge/skills/nicepkg/ai-workflow/keyword-cluster-builder.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 638 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00037 $0.00638
Opus 5 $0.00018 $0.00319
Sonnet 5 $0.00007 $0.00128
Haiku 4.5 $0.00004 $0.00064

Measured 3d ago against content hash 2edd572292f8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

keyword-cluster-builder scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

workflows/marketing-pro-workflow/.claude/skills/keyword-cluster-builder/SKILL.md · 101 lines

How it starts

The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Keyword Cluster Builder

When to Use

  • Expanding seed keywords to comprehensive lists (50-100+)
  • Grouping keywords by topic for pillar content strategy
  • Mapping keywords to funnel stages
  • Identifying content gaps in keyword coverage

Expansion Techniques

Question Modifiers

  • What is {keyword}
  • How to {keyword}
  • Why {keyword}
  • When to {keyword}
  • Where to {keyword}

Comparative Modifiers

  • {keyword} vs {competitor}
  • {keyword} alternatives
  • best {keyword}
  • {keyword} comparison

Intent Modifiers

  • {keyword} guide
  • {keyword} tutorial
  • {keyword} examples
  • {keyword} template
  • buy {keyword}
  • {keyword} pricing

Audience Modifiers

  • {keyword} for beginners
  • {keyword} for {industry}
  • {keyword} for small business
  • {keyword} for enterprise

Clustering Algorithm

  1. Extract Seed Topics: Identify main themes from expanded list
  2. Group by Semantic Similarity: Keywords with overlapping meaning
  3. Map Intent: Assign I/C/T/N to each cluster
  4. Identify Pillar: Highest-volume, broadest term = pillar
  5. Map Supporting: Lower-volume terms support pillar

Cluster Structure

PILLAR: "content marketing" (highest volume)
+-- CLUSTER: "content marketing strategy" (commercial)
|   +-- content marketing plan template
|   +-- content marketing framework
|   +-- how to create content marketing strategy
+-- CLUSTER: "content marketing examples" (informational)
|   +-- B2B content marketing examples
|   +-- content marketing case studies
|   +-- content marketing success stories
+-- CLUSTER: "content marketing tools" (commercial)
    +-- best content marketing tools
    +-- content marketing software
    +-- content marketing platforms

Intent Classification Rules

Signal Intent
"what is", "how to", "guide" Informational
"best", "vs", "review", "compare" Commercial
"buy", "price", "discount", brand Transactional
Brand name, specific product Navigational

Output Format

Read the full file on GitHub · 101 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 101 lines · 37 tokens per session scan A 2edd572292f8

Subscribe to this mod's changes

keyword-cluster-builder is a skill published in the GitHub repository nicepkg/ai-workflow (283 stars, last pushed 7mo ago), licensed MIT. It adds 37 tokens to every session and 638 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.