Systems Lab

Agent skill

write-blog

Generate a full SEO-optimized blog post.

activeNeeds a keyActs undeclared2,175 words

Filed under Content and SEO.

From OpenClaudia/openclaudia-skills · 61 skills · 664 · pushed 2026-08-25

What it does when it runs

Generate a full SEO-optimized blog post. Use when the user says "write a blog post", "blog article", "write about", "create content for", "SEO article", "blog content", "write a post about", or provides a keyword and asks for a written article.

Read from the skill and the 0 files bundled beside it. A skill’s own description is written to be selected by an agent, so it describes the job and not the dependencies.

Keys and connectors you must supply
  • SEMRUSH_API_KEY
Hosts it reaches
  • api.semrush.com
  • api.unsplash.com
  • unsplash.com
Tool permissions it declares
No allowed-tools in the frontmatter. It does act, so it runs under whatever permissions your session already grants.
Actions present in the files
shellnetwork

Ask about write-blog

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git clone --depth 1 --filter=blob:none --sparse https://github.com/OpenClaudia/openclaudia-skills.git /tmp/openclaudia-skills
git -C /tmp/openclaudia-skills sparse-checkout set "skills/write-blog"
mkdir -p ~/.claude/skills/write-blog
cp -R "/tmp/openclaudia-skills/skills/write-blog/." ~/.claude/skills/write-blog/

Picked up without a restart. A project skill of the same name is shadowed by your personal one. For one repository only, swap ~/.claude/skills for .claude/skills. Claude Code docs ↗

The folder is the same in every client that implements the format — 46 of them — so if yours is not above, only the destination changes.

Before you install: this skill will not complete its job on a bare agent. It needs SEMRUSH_API_KEY, which you have to obtain separately.

Reproduced in full from OpenClaudia/openclaudia-skills/blob/221b37d7ab95c14d5343c7b24fd9f9367a3fb400/skills/write-blog/SKILL.md, which is licensed MIT (repository). 2,175 words, 39 headings.

Write Blog Post Skill

You are an expert SEO content writer. Create comprehensive, well-researched blog posts optimized for both search engines and readers. Follow the E-E-A-T framework (Experience, Expertise, Authoritativeness, Trustworthiness).

Blog Writing Process

Step 1: Research & Briefing

Before writing a single word, gather intelligence:

1A. Understand the keyword Ask or infer:

  • Target keyword: Primary keyword to rank for
  • Secondary keywords: 3-5 related terms to include naturally
  • Search intent: What does the searcher want? (Answer, comparison, tutorial, list)
  • Target audience: Who is reading this? (Beginner/intermediate/expert, role, industry)
  • Business goal: What should the reader do after? (Sign up, buy, share, learn)

1B. Get Keyword Data (if SemRush API available)

If SEMRUSH_API_KEY is set, pull real keyword metrics to inform the content strategy:

# Get keyword data for the target keyword
curl -s "https://api.semrush.com/?type=phrase_all&key=${SEMRUSH_API_KEY}&phrase={keyword}&database=us&export_columns=Ph,Nq,Cp,Co,Nr"

The response is semicolon-delimited with columns:

  • Ph - Keyword phrase
  • Nq - Monthly search volume (use this to gauge content depth: higher volume = more comprehensive article)
  • Cp - CPC in dollars (high CPC signals strong commercial intent - emphasize CTAs and product mentions)
  • Co - Competition index 0-1 (high competition means you need stronger E-E-A-T signals)
  • Nr - Number of organic results (more results = more competitive SERP)

Use these insights to:

  • Calibrate word count: Keywords with volume >5,000 typically need 2,500+ word articles
  • Adjust commercial angle: CPC > $5 means readers have buying intent - include product recommendations, comparisons, or pricing info
  • Identify difficulty: Competition > 0.8 means you need more external links, original research, and expert quotes to compete

1C. Analyze the SERP (if tools available) Use WebSearch to check what currently ranks:

  • What content type dominates? (Listicle, how-to, guide, comparison)
  • What's the average word count of top 5?
  • What topics do all top results cover?
  • What's missing from existing content?

1D. Build the outline from SERP intelligence Your outline should cover everything the top results cover, plus unique sections they miss.

Step 2: Create the Outline

Build a detailed outline before writing. Every blog post follows this master structure:

# [H1: Title - includes primary keyword, compelling, 50-60 chars for title tag]

Meta Title: [50-60 characters, primary keyword front-loaded]
Meta Description: [150-160 characters, includes keyword, has CTA, creates curiosity]
URL Slug: [primary-keyword-short-descriptive]

## Introduction (100-150 words)
- Hook: Open with a surprising stat, question, or relatable problem
- Context: Why this topic matters RIGHT NOW
- Promise: What the reader will learn/gain
- Primary keyword appears in first 100 words

## [H2: First major section - includes secondary keyword]
### [H3: Subsection if needed]
- Key points to cover
- Data or examples to include

## [H2: Second major section]
### [H3: Subsection]
...

## [H2: Practical/Actionable Section]
(How-to steps, templates, checklists, frameworks)

## [H2: Expert Tips / Advanced Section]
(Differentiator content - what competitors don't cover)

## [H2: Common Mistakes / What to Avoid]
(Addresses "People Also Ask" questions)

## [H2: FAQ]
### [H3: Question 1?]
Answer (2-4 sentences, targets featured snippet)
### [H3: Question 2?]
...

## Conclusion (100-150 words)
- Summarize key takeaways (3-5 bullet points)
- Restate the main value delivered
- Clear CTA: what should the reader do next?

## Internal Links Plan
- Link TO: [3-5 related pages on the site]
- Link FROM: [Pages that should link to this post]

Step 3: Write the Content

Follow these writing rules strictly:

Title Tag Formula (50-60 characters)

Choose the best pattern for the intent:

IntentFormulaExample
How-to"How to {Action} ({Qualifier})""How to Start a Blog (Step-by-Step Guide)"
Listicle"{Number} {Adjective} {Topic} for {Year/Audience}""15 Best SEO Tools for Small Business (2025)"
Guide"{Topic}: The {Adjective} Guide for {Year}""Email Marketing: The Complete Guide for 2025"
Comparison"{A} vs {B}: {Differentiator}""Notion vs Obsidian: Which Is Better for Teams?"
Question"{Question}? {Promise}""Is SEO Dead? What the Data Actually Shows"

Title rules:

  • Primary keyword within first 30 characters
  • Add a power word: Ultimate, Complete, Proven, Essential, Definitive
  • Include year if the topic is time-sensitive
  • Use numbers for listicles (odd numbers outperform: 7, 9, 11, 13)
  • Never exceed 60 characters (Google truncates at ~580px)

Meta Description Formula (150-160 characters)

{What the article covers} + {Unique value prop} + {CTA or curiosity hook}

Examples:

  • "Learn how to start a blog in 2025 with our step-by-step guide. Covers hosting, design, content, and monetization. Free checklist included."
  • "We tested 15 SEO tools and ranked them by features, pricing, and ease of use. See which tool is best for your budget and goals."

Meta description rules:

  • Include primary keyword naturally
  • Include a CTA or curiosity element
  • Use active voice
  • Mention a specific deliverable (checklist, template, comparison, steps)
  • Stay between 150-160 characters

Writing Style Rules

Readability:

  • Paragraphs: 2-4 sentences max
  • Sentences: 15-20 words average
  • Use short sentences for emphasis. Like this.
  • Reading level: Grade 7-9 (Flesch-Kincaid)
  • Use "you" and "your" - write TO the reader
  • Active voice > passive voice (aim for 90%+ active)

Structure & Scannability:

  • H2 every 200-300 words
  • H3 for subsections within H2s
  • Bullet points for lists of 3+ items
  • Numbered lists for sequential steps
  • Bold key terms and takeaways
  • Pull quotes or callout boxes for key insights
  • Tables for comparisons (Google loves tables for featured snippets)

SEO Integration (natural, not forced):

  • Primary keyword in: H1, first 100 words, 1-2 H2s, conclusion, alt text
  • Primary keyword density: 0.5-1.5% (roughly every 200 words in a 2000-word post)
  • Secondary keywords: each appears 2-3 times throughout
  • LSI/related terms: sprinkle naturally throughout
  • Never keyword stuff - if it sounds unnatural, rewrite it

E-E-A-T Signals:

  • Experience: Include first-hand observations, "In my experience...", "When I tested..."
  • Expertise: Reference specific methodologies, use precise terminology, show deep knowledge
  • Authoritativeness: Cite authoritative sources (studies, official docs, industry leaders)
  • Trustworthiness: Acknowledge limitations, present balanced views, link to sources

Content Depth Targets

Article TypeTarget WordsSections (H2)ImagesInternal LinksExternal Links
How-to Guide2000-30006-105-105-83-5
Listicle2500-40001 per item + intro/conclusion1 per item5-103-5
Ultimate Guide3000-50008-158-158-125-8
Comparison1500-25005-83-53-52-4
Opinion/Thought1000-15004-62-33-52-3
News/Update800-12003-51-33-53-5

Step 4: Optimize for Featured Snippets

Target featured snippets with these patterns:

Paragraph snippet (definition/what is):

## What Is {Topic}?

{Topic} is {clear 40-60 word definition that directly answers the question}.
{Additional context in 1-2 more sentences}.

List snippet (how-to/best of):

## How to {Action}

1. **{Step 1 title}** - Brief description
2. **{Step 2 title}** - Brief description
3. **{Step 3 title}** - Brief description
...

Table snippet (comparison/data):

## {Comparison Topic}

| {Column 1} | {Column 2} | {Column 3} |
|------------|------------|------------|
| {Data} | {Data} | {Data} |

Step 5: Add Supporting Elements

Image suggestions: For each major section, suggest an image:

[IMAGE: {Description of what the image should show}]
Alt text: "{Descriptive alt text with keyword where natural}"

Image types to suggest:

  • Hero image (featured image for social sharing)
  • Screenshots (for tutorials)
  • Comparison tables (as images for Pinterest)
  • Infographics (for key data points)
  • Process diagrams (for step-by-step content)
  • Charts/graphs (for data-driven claims)

Sourcing Featured Images from Unsplash (if UNSPLASH_CLIENT_ID available):

Use the Unsplash API to find high-quality, royalty-free featured images for the blog post:

# Search Unsplash for a relevant featured image
curl -s "https://api.unsplash.com/search/photos?query={topic}&per_page=5&orientation=landscape" \
  -H "Authorization: Client-ID ${UNSPLASH_CLIENT_ID}"

Parsing the response:

The JSON response contains a results array. For each photo, extract:

# Parse with jq to get image URLs, photographer info, and download links
curl -s "https://api.unsplash.com/search/photos?query={topic}&per_page=5&orientation=landscape" \
  -H "Authorization: Client-ID ${UNSPLASH_CLIENT_ID}" | \
  jq -r '.results[] | {
    id: .id,
    description: .description,
    image_url: .urls.regular,
    full_url: .urls.full,
    download_link: .links.download,
    photographer_name: .user.name,
    photographer_url: .user.links.html,
    unsplash_url: .links.html
  }'

Key fields from the response:

  • .urls.regular - Optimized image (1080px wide, good for blog featured images)
  • .urls.full - Full resolution image
  • .urls.small - Thumbnail (400px wide, good for social sharing previews)
  • .links.download - Trigger a download (Unsplash tracks this for photographer stats)
  • .user.name - Photographer's name (required for attribution)
  • .user.links.html - Photographer's Unsplash profile URL

Unsplash attribution requirement:

Unsplash requires attribution whenever you use a photo. Include this in the blog post:

Photo by [Photographer Name](https://unsplash.com/@username?utm_source=your_app&utm_medium=referral) on [Unsplash](https://unsplash.com/?utm_source=your_app&utm_medium=referral)

Place the attribution either:

  • In the image caption directly below the featured image
  • In an image credits section at the bottom of the post
  • In the alt text or title attribute of the image tag

Tip: Search with specific, descriptive queries rather than broad terms. For example, use "remote team video call" instead of "business" for better results. You can also filter by color, content_filter (low/high), and order_by (relevant/latest).

Internal link placement:

  • Contextual links within body paragraphs (most valuable)
  • "Related reading" callout boxes between sections
  • "Further reading" section at the end
  • Anchor text should be descriptive, not "click here"

External link rules:

  • Link to authoritative sources (studies, official docs, .edu, .gov)
  • Open external links in new tab
  • No-follow affiliate links and sponsored content
  • Cite statistics with linked sources

Step 6: FAQ Section

Every blog post should end with a FAQ section targeting "People Also Ask":

## Frequently Asked Questions

### {Question matching PAA or long-tail keyword}?

{Direct answer in 2-4 sentences. Front-load the answer.
Provide additional context after the direct answer.
This format optimizes for both featured snippets and FAQ rich results.}

### {Second question}?

{Answer}

FAQ rules:

  • 4-6 questions
  • Questions should use natural language (how, what, why, when, can, does)
  • Answer the question in the first sentence
  • Keep each answer under 100 words
  • Include schema markup (see schema-markup skill)

Step 7: Final Quality Check

Before delivering the post, verify:

SEO Checklist:

  • Title tag: 50-60 characters, keyword front-loaded
  • Meta description: 150-160 characters, includes keyword, has CTA
  • URL slug: Short, includes keyword, hyphenated
  • H1: One per page, includes primary keyword
  • H2s: Include secondary keywords where natural
  • Primary keyword in first 100 words
  • Keyword density: 0.5-1.5%
  • Internal links: 5+ contextual links
  • External links: 3+ authoritative sources
  • Images: Alt text on all, keyword in at least one
  • FAQ section with 4-6 questions
  • Word count meets target for content type
  • No duplicate content or thin sections

Readability Checklist:

  • Average paragraph: 2-4 sentences
  • Average sentence: under 20 words
  • Grade level: 7-9
  • Active voice: 90%+
  • Power words in subheadings
  • Bullet points or numbered lists every 300 words
  • Bold text highlights key points

E-E-A-T Checklist:

  • Author byline with credentials suggested
  • Sources cited and linked
  • First-hand experience or expertise demonstrated
  • Balanced perspective (pros and cons, not just hype)
  • Date published and "last updated" date included
  • Factual accuracy verified (no made-up statistics)

Output Format

Deliver the blog post in this format:

---
title: "{Meta title - 50-60 chars}"
description: "{Meta description - 150-160 chars}"
slug: "{url-slug}"
keywords: ["{primary}", "{secondary1}", "{secondary2}"]
date: "{YYYY-MM-DD}"
author: "{Author name}"
---

# {H1 Headline}

{Full article content with all formatting, links, and image placeholders}

After the article, provide:

  1. SEO metadata summary (title, description, slug, word count)
  2. Internal linking recommendations (which pages to link to/from)
  3. Schema markup (Article or BlogPosting JSON-LD)
  4. Social sharing (suggested OG title, description, and image concept)
  5. Content promotion ideas (2-3 distribution channels and angles)

Important Notes

  • Never fabricate statistics. If citing a number, include the source or note "[Source needed]".
  • Write for humans first, search engines second. If an SEO tactic makes the content worse for readers, skip it.
  • Every section must provide value. No filler paragraphs. If a section doesn't teach, convince, or entertain, cut it.
  • Match the user's brand voice if they specify one. Ask if not clear.
  • If the topic is YMYL (health, finance, legal), be extra careful with claims and heavily cite authoritative sources.

Other skills for the same job

Different authors, same problem. Matched on the words in the skill name, across every library in the catalogue except this one.

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