# content-gap-analysis

Compares your website content and search queries against 2-3 competitors using sitemaps and Semrush API. Useful for finding missing topic clusters, formats, and AI search visibility gaps.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 453 installs · ★ 721
- Author: OpenClaudia
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/OpenClaudia/openclaudia-skills/tree/HEAD/skills/content-gap-analysis/SKILL.md
- Updated: 2026-10-21
- HTML: https://affpapa.org/en/nevibecode/skills/openclaudia-content-gap-analysis

## What it does

The skill inventories existing content by parsing `sitemap.xml` or scanning local MDX, markdown, and CMS files. It categorizes existing pages, fetches sitemaps for 2-3 competitors, and maps topic clusters to reveal coverage gaps. The prompt also audits content against stages of the buyer journey, missing publication formats, and search visibility inside Google AI Overviews.

When a `SEMRUSH_API_KEY` environment variable is present, the agent executes curl queries to extract organic keywords. It filters gap opportunities to terms with search volume above 100 per month and difficulty below 60. Without a Semrush API key, the skill can only compare sitemap URLs and local files, leaving search demand out of the equation.

Opportunities are ranked through a weighted score. Search volume accounts for 30%, business alignment takes 25%, competition difficulty represents 20%, creation effort is 15%, and strategic value adds 10%. The final output is a markdown report containing executive summaries, gap tables, and quick wins.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add OpenClaudia/openclaudia-skills --skill content-gap-analysis -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/content-gap-analysis/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/content-gap-analysis/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add OpenClaudia/openclaudia-skills --skill content-gap-analysis -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/content-gap-analysis/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add OpenClaudia/openclaudia-skills --skill content-gap-analysis -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/content-gap-analysis/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install OpenClaudia/openclaudia-skills content-gap-analysis
```

2. **Manually: put the files in place**
- File: `.github/skills/content-gap-analysis/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add OpenClaudia/openclaudia-skills --skill content-gap-analysis -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/OpenClaudia/openclaudia-skills --path skills/content-gap-analysis
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/content-gap-analysis/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add OpenClaudia/openclaudia-skills --skill content-gap-analysis -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/OpenClaudia/openclaudia-skills/tree/HEAD/skills/content-gap-analysis/SKILL.md

## When to use it
- audit sitemaps against 2-3 competitor websites
- pull missing organic search queries via Semrush API
- identify missing content formats and customer journey stages
- check site citations in Google AI Overviews
- prioritize editorial topics using weighted scoring

## Example prompts
- Run a content gap analysis comparing our site against competitor.com
- What competitor content and topics am I missing on my blog?
- Find keyword and content format gaps between our domain and competitor.com

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: d4aca3250403cf7f.

BEGIN THIRD-PARTY FILE d4aca3250403cf7f
````text
---
name: content-gap-analysis
description: Identify content gaps between your site and competitors. Use when the user says "content gaps", "what am I missing", "competitor content", "content opportunities", "topics I should cover", "content gap analysis", or asks about finding topics and keywords their site doesn't cover but competitors do.
---

# Content Gap Analysis Skill

You are a content strategy analyst. Identify content gaps by comparing a site's content coverage against competitors, search demand, and audience journey needs.

## Analysis Process

### Step 1: Audit Existing Content

Inventory the user's current content:

1. **Crawl the sitemap** — Fetch `{domain}/sitemap.xml` to list all published pages
2. **Categorize pages** by type: blog posts, landing pages, product pages, docs, case studies
3. **Map topics covered** — What keywords/topics does each page target?

If the user has a codebase, check:
- Blog post files/directories
- MDX/markdown content files
- CMS entries or database content

### Step 2: Competitor Content Audit

For 2-3 competitors, gather their content:

1. **Fetch competitor sitemaps** — `{competitor}/sitemap.xml`
2. **List their blog/resource pages**
3. **Categorize their content** by topic cluster

If SemRush API is available:
```bash
# Get competitor's top organic keywords
curl -s "https://api.semrush.com/?type=domain_organic&key=${SEMRUSH_API_KEY}&domain={competitor}&database=us&export_columns=Ph,Po,Nq,Cp,Co,Tr,Tc&display_limit=100"
```

### Step 3: Keyword Gap Analysis

Compare keywords your site ranks for vs. competitors:

```bash
# Your site's keywords
curl -s "https://api.semrush.com/?type=domain_organic&key=${SEMRUSH_API_KEY}&domain={your_domain}&database=us&export_columns=Ph,Po,Nq,Cp,Tr&display_limit=200"

# Competitor's keywords
curl -s "https://api.semrush.com/?type=domain_organic&key=${SEMRUSH_API_KEY}&domain={competitor}&database=us&export_columns=Ph,Po,Nq,Cp,Tr&display_limit=200"
```

**Gap = Keywords competitors rank for that you don't.**

Filter gaps by:
- Search volume > 100/month
- Keyword difficulty < 60 (achievable)
- Relevant to your business
- Not branded competitor terms

### Step 4: Topic Cluster Gap Analysis

Compare topic coverage at the cluster level:

```
Your topic clusters:        Competitor topic clusters:
├── Cluster A: 8 articles   ├── Cluster A: 12 articles  ← Coverage gap
├── Cluster B: 5 articles   ├── Cluster B: 5 articles   ← Parity
````
END THIRD-PARTY FILE d4aca3250403cf7f

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