content-gap-analysis

content-gap-analysis is a skill for Claude Code, Codex from OpenClaudia/openclaudia-skills. It costs 63 tokens per session (1,937 once invoked), scanned A, original, MIT.

A comparison of the topics and search terms covered by your website and by competing websites.

In plain words
What is it for?
Use it to review your sitemap or content files, compare competitor pages, and identify topics to add for your audience.
Why use it?
It shows what useful subjects competitors cover that your site does not, so missing opportunities are easier to spot.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to review your sitemap or content files, compare competitor pages, and identify topics to add for your audience.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/openclaudia/openclaudia-skills/content-gap-analysis
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.

Any agent
npx skills add OpenClaudia/openclaudia-skills --skill content-gap-analysis
Clone the repo
git clone --depth 1 https://github.com/OpenClaudia/openclaudia-skills

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 content-gap-analysis

README.md
[![agentmods](https://agentmods.dev/badge/skills/openclaudia/openclaudia-skills/content-gap-analysis/github.svg)](https://agentmods.dev/skills/openclaudia/openclaudia-skills/content-gap-analysis)
Your own site
<a href="https://agentmods.dev/skills/openclaudia/openclaudia-skills/content-gap-analysis"><img src="https://agentmods.dev/badge/skills/openclaudia/openclaudia-skills/content-gap-analysis/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for content-gap-analysis

Your own site · 80×15
<a href="https://agentmods.dev/skills/openclaudia/openclaudia-skills/content-gap-analysis"><img src="https://agentmods.dev/badge/skills/openclaudia/openclaudia-skills/content-gap-analysis.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,937 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 18 Mar 2026
  • Snyk warn 14 Feb 2026
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 36
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 45
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 48
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
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 5.1 $0.00063 $0.01937
Opus 5 $0.00032 $0.00968
Sonnet 5 $0.00013 $0.00387
Haiku 4.5 $0.00006 $0.00194

Measured 11d ago against content hash 95dceb8c9a6f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

content-gap-analysis scanned grade A with 1 finding 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 11d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

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"
skills/content-gap-analysis/SKILL.md · 204 lines

How it starts

The opening of the file, as written. The whole thing — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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:

# 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:

# 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
├── Cluster C: 3 articles   ├── Cluster C: 7 articles   ← Coverage gap
│                            ├── Cluster D: 6 articles   ← Missing cluster
│                            ├── Cluster E: 4 articles   ← Missing cluster

Read the full file on GitHub · 204 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. 11d ago First seen · 204 lines · 63 tokens per session scan A 95dceb8c9a6f

Subscribe to this mod's changes

content-gap-analysis is a skill published in the GitHub repository OpenClaudia/openclaudia-skills (686 stars, last pushed yesterday), licensed MIT. It adds 63 tokens to every session and 1,937 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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