AI Blog Writing & SEO Optimization Skill for Claude Code (claude-blog)

claude-blog is a Claude Code skill suite that writes, optimizes, audits, localizes, and refreshes blog content at scale. Every article is evaluated for Google-aligned usefulness and internal AI citation readiness heuristics. Version 2.1.1 was prepared on 2026-07-23.

The core promise is simple: the user is never the first reviewer. A 5-gate Blog Delivery Contract scores every draft against a 100-point rubric, blocks delivery below 90, verifies artifacts and links, and iterates up to 3 times before escalation.

This is the public, MIT-licensed distribution at AgriciDaniel/claude-blog. The publishing workflow is documented in docs/PUBLISHING.md.

Blog: See how claude-blog works

Demo

Watch the original demo on YouTube.

What It Is

claude-blog is a full-lifecycle blog engine for strategy, briefs, outlines, writing, rewriting, analysis, schema, AI citation readiness, site audits, topic clusters, multilingual publishing, audio narration, and content decay detection.

Current v2.1.1 shape: 32 skill directories = 1 orchestrator + 31 sub-skills; 30 user-facing /blog commands (blog-chart is internal, not a command). It also includes 5 specialized agents, repository consistency and public-release validators, 22 core references, 12 templates, a 250+ test suite, and the bundled Claude Blog Brain at ./brain.

Every draft ships as an artifact folder with the markdown source, rendered HTML, PDF, real hero.<ext>, 3 viewport screenshots, review.md, and preflight-report.json. The renderer uses XSS-safe JSON-LD handling, dark-mode-aware CSS, and the same source for every output format.

Who It Is For

Solo bloggers and creators can ship high-quality posts without spending hours on SEO, schema, source checks, and internal linking.

Marketing teams and agencies can run consistent multi-post workflows across brands, languages, authors, and platforms with /blog cluster, /blog multilingual, /blog persona, /blog brand, and /blog discourse.

Claude Code skill builders can study a Tier 4 Agent Skills reference architecture with orchestrator routing, sub-skill dispatch, agent handoffs, code-enforced delivery gates, installer hardening, and CI coherence checks.

Where Should a Claude Code Skill Plugin Install Itself?

Most user-installable Claude Code skill plugins should ship to ~/.claude/skills/<name>/ for skill content, ~/.claude/agents/<name>.md for agents, and ~/.claude/scripts/<helper>.py for Python helpers.

This answer is intentionally kept in the README because it demonstrates the GEO and SEO writing pattern claude-blog produces: answer-first summary, explicit paths, source-ready structure, and a compact FAQ-ready section that AI systems can quote without extra context.

A condensed specimen of a generated article:

---
title: "Where Should a Claude Code Skill Plugin Install Itself?"
description: "A working answer to the install-path question..."
date: "2026-05-18"
author: "Daniel Agrici"
tags: [claude-code, skills, plugins, installation]
canonical: "https://example.com/blog/skill-plugin-install-path"
---

## Where Should a Claude Code Skill Plugin Install Itself?

The short answer: most user-installable Claude Code skill plugins
should ship to `~/.claude/skills/<name>/` for skill content,
`~/.claude/agents/<name>.md` for agents, and
`~/.claude/scripts/<helper>.py` for any Python helpers.

### Key Takeaways
- `~/.claude/skills/` is the SKILL.md surface area.
- `~/.claude/agents/` holds agent markdown files.
- The full article includes sourced citations, FAQ, and schema JSON-LD.

Architecture

The orchestrator in skills/blog/SKILL.md parses /blog input, detects the target platform, loads only the references it needs, routes to a sub-skill, and coordinates agents plus scripts through the delivery contract.

Layer	Count	Where
Skill directories	32	skills/blog plus skills/blog-*
Orchestrator	1	skills/blog/SKILL.md
Sub-skills	31	skills/blog-*/SKILL.md
User-facing /blog commands	30	skills/blog/SKILL.md routing table
Internal-only sub-skill	1	skills/blog-chart/SKILL.md
Specialized agents	5	agents/blog-*.md
Root scripts	14	scripts/*.py
References	22	skills/blog/references/*.md
Templates	12	skills/blog/templates/*.md
Tests	252	tests/

More architecture detail lives in docs/ARCHITECTURE.md.

5-Gate Delivery Contract

Every /blog write and /blog rewrite result must pass the delivery contract before it is shown to the user.

Gate	Enforces	Implementation
1. Capability Discovery	Required tools, agents, env vars, and optional dependencies are known before writing	scripts/blog_preflight.py --gate 1
2. Format Completeness	.md, .html, .pdf, and a real hero image exist	scripts/blog_render.py, scripts/generate_hero.py
3. Visual Verification	Screenshots render at 375, 768, and 1280 widths, JSON-LD is valid, dark mode holds, SVGs do not overflow	patchright or playwright
4. Content Review	blog-reviewer score is 90+ with zero P0 issues	agents/blog-reviewer.md
5. Asset and Link Integrity	Images resolve, og:image exists, links return 200, word count matches schema within 5%	scripts/blog_preflight.py --gate 5

Hero image ladder: Banana MCP, direct Gemini API, premium stock APIs, then Openverse. First working source wins. Full spec: skills/blog/references/blog-delivery-contract.md.

Sub-Skill Ecosystem

The ecosystem is intentionally modular. Most commands are user-facing sub-skills. blog-chart is internal-only, and blog-image can be called both by the user and internally by write and rewrite workflows.

Commands

First run: /blog strategy <niche> to scope the site, /blog write <topic> to generate a gated article, and /blog analyze <file-or-url> to score an existing post.

Command	What it does
/blog write <topic>	Write a new blog post from scratch
/blog rewrite <file>	Rewrite/optimize an existing blog post
/blog analyze <file-or-url>	Audit blog quality with 0-100 score
/blog brief <topic>	Generate a detailed content brief
/blog calendar [monthly|quarterly]	Generate an editorial calendar
/blog strategy <niche>	Blog strategy and topic ideation
/blog outline <topic>	Generate SERP-informed content outline
/blog seo-check <file>	Post-writing SEO validation checklist
/blog schema <file>	Generate JSON-LD schema markup
/blog repurpose <file>	Repurpose content for other platforms
/blog geo <file>	AI citation readiness audit
/blog audit [directory]	Full-site blog health assessment
/blog cannibalization [dir]	Detect keyword cannibalization across posts
/blog factcheck <file>	Verify statistics against cited sources
/blog image [generate|edit|setup]	AI image generation and editing via Gemini
/blog persona [create|list|use|show]	Manage writing personas and voice profiles
/blog brand [init|show|update]	Generate BRAND.md + VOICE.md context files auto-loaded by all sub-skills
/blog discourse <topic>	Research what people are actually saying about a topic in last 30 days; produces DISCOURSE.md (v1.8.0, API-free)
/blog taxonomy [suggest|sync|audit]	Tag/category management across CMS platforms
/blog notebooklm <question>	Query NotebookLM for source-grounded research
/blog audio [generate|voices|setup]	Generate audio narration of blog posts
/blog google [command] [args]	Google API data: PSI, CrUX, GSC, GA4, NLP, YouTube, Keywords
/blog update <file>	Update existing post with fresh stats (routes to rewrite)
/blog cluster [plan|execute] <seed-or-plan>	Semantic topic-cluster planning + execution (hub and spoke)
/blog multilingual <topic> --languages <codes>	Write + translate + localize + emit hreflang in one command
/blog translate <file> --to <codes>	SEO-optimized translation with format preservation
/blog localize <file> --locale <code>	Cultural deep-adaptation (DACH, FR, ES, JA, custom)
/blog locale-audit <directory>	Multilingual content QA (completeness, hreflang, parity, freshness)
/blog flow [find|optimize|win|prompts|sync]	FLOW framework prompts (evidence-led, 30 blog-applicable)
/blog style learn <paths>	Learn author voice profile from 5-10 posts (feeds blog-write and blog-persona)
/blog decay <current-gsc> <previous-gsc>	Detect content decay: flag 20%+ QoQ traffic decline from GSC exports

/blog update is a freshness alias routed to blog-rewrite; the project count remains 30 user-facing /blog commands. blog-chart remains internal-only.

Full reference: docs/COMMANDS.md.

FLOW Framework

claude-blog integrates the FLOW framework from AgriciDaniel/flow (CC BY 4.0). FLOW means Find, Leverage, Optimize, Win. The skill surfaces Find, Optimize, and Win as /blog flow commands; Leverage is available as a prompt family through /blog flow prompts and is applied inside drafting, repurposing, and distribution workflows.

Features

v1.10 and v1.11 Highlights

• 5-gate Delivery Contract: code-enforced pre-presentation gates for format, visuals, review, assets, and links.
• AI Citation Readiness Heuristic: scripts/ai_citation_score.py produces non-calibrated 0-100 editorial-readiness views for AI Overview, Perplexity, and ChatGPT and feeds /blog geo.
• Writing style learning: /blog style learn <paths> builds an author voice profile from 5 to 10 posts.
• Content decay detection: /blog decay <current-gsc> <previous-gsc> flags 20%+ quarter-over-quarter GSC traffic drops and suggests refresh, consolidate, or prune actions.
• Pre-commit quality gate: scripts/quality_gate.py and .pre-commit-config.yaml block blog posts below score 70 before commit.
• Brand and discourse context: /blog brand writes BRAND.md and VOICE.md; /blog discourse writes DISCOURSE.md. The orchestrator loads them through fenced, nonce-bound untrusted-data handling.
• Multilingual and topic clusters: /blog multilingual, /blog translate, /blog localize, /blog locale-audit, and /blog cluster support international hub-and-spoke publishing.
• Deterministic blog hygiene: scripts/blog_hygiene.py can add lazy image loading and a table of contents without replacing human review.

12 Content Templates

Auto-selected by topic and intent: how-to guide, listicle, case study, comparison, pillar page, product review, thought leadership, roundup, tutorial, news analysis, data research, and FAQ knowledge base.

5-Category Quality Scoring

Category	Points	Focus
Content Quality	30	Depth, readability, originality, engagement
SEO Optimization	25	Headings, title, keywords, links, meta
E-E-A-T Signals	15	Author, citations, trust, evidence basis
Technical Elements	15	Schema, images, speed, mobile, OG tags
AI Citation Readiness	15	Evidence-backed citability, purpose fit, entity clarity

Scoring bands: Exceptional (90-100), Strong (80-89), Acceptable (70-79), Below Standard (60-69), Rewrite (<60). The delivery contract blocks delivery below 90.

More Capabilities

• Advisory editorial style diagnostics for sentence-length variation, configured phrase lists, and vocabulary sampling; these never infer authorship or affect scoring.
• Persona-driven writing with NNGroup tone dimensions, readability bands, and style enforcement.
• /blog factcheck source verification with exact match, paraphrase, and not-found confidence scoring.
• /blog cannibalization keyword overlap detection with merge or differentiate recommendations.
• CMS taxonomy management for WordPress, Shopify, Ghost, Strapi, and Sanity.
• Dual Google and AI-citation optimization, including evidence-backed explanations, intent-matched structure, optional visible Q&A, internal links, schema, and substantive maintenance.
• Visual media through Gemini image generation, verified stock sourcing, SVG charts, YouTube embeds, and alt text requirements.
• Google API integration across PageSpeed Insights, CrUX, Search Console, GA4, NLP, YouTube, URL Inspection, and Keyword Planner. Indexing API use is scoped to JobPosting or livestream URLs only.
• NotebookLM research for source-grounded answers from user-uploaded documents.
• Gemini TTS audio narration in summary, full-article, and two-speaker dialogue modes.
• Platform support for Next.js MDX, Astro, Hugo, Jekyll, WordPress, Ghost, 11ty, Gatsby, and static HTML.

Methodology References

Reference	Purpose
ai-slop-detection.md	Two-tier advisory editorial pattern review; never an authorship classifier or scoring input
editorial-heuristics.md	Nielsen-adapted 0-4 scoring with P0-P3 severity
cognitive-load.md	Per-section concept-density scoring
research-quality.md	Source-tier, freshness, and synthesis quality checks
synthesis-contract.md	Research synthesis LAWs for citation-safe output

Adapted attribution lives in CONTRIBUTORS.md.

Brain Provenance

The Claude Blog Brain is vendored at ./brain as a self-contained, evidence-gated Obsidian brain. It is not part of the plugin payload; all skill tooling remains scoped to skills/. Brain-derived updates land through reviewed reference, script, and documentation changes.

Install

Plugin install for Claude Code 1.0.33+:

/plugin marketplace add AgriciDaniel/claude-blog
/plugin install claude-blog@agricidaniel-blog

Recommended clone, verify, then install flow:

git clone https://github.com/AgriciDaniel/claude-blog.git
cd claude-blog
git checkout v2.1.1
chmod +x install.sh
./install.sh

One-command install on Unix and macOS:

curl -fsSL https://raw.githubusercontent.com/AgriciDaniel/claude-blog/main/install.sh | CLAUDE_BLOG_REF=v2.1.1 bash

One-command install on Windows PowerShell:

$env:CLAUDE_BLOG_REF = "v2.1.1"
irm https://raw.githubusercontent.com/AgriciDaniel/claude-blog/main/install.ps1 -OutFile install.ps1
pwsh -File ./install.ps1

Verify installer integrity before running:

curl -fsSL -o install.sh https://raw.githubusercontent.com/AgriciDaniel/claude-blog/main/install.sh
echo "b4fcd5aa6767529bc8d11017699bd8211519c93b0d6c28c5cf032f76ada98381  install.sh" | sha256sum -c
CLAUDE_BLOG_REF=v2.1.1 bash install.sh

The SHA-256 above is for the current install.sh at HEAD on main; CLAUDE_BLOG_REF pins the repository clone performed by the installer. Verify against the canonical file before running. The install.ps1 companion hash is 9532d3014aa24468d8dd309e19acb5557c9cc7e4edab718381c26515aab48a79.

Restart Claude Code after installation to activate.

Uninstall on Unix and macOS:

chmod +x uninstall.sh
./uninstall.sh

Uninstall on Windows PowerShell:

.\uninstall.ps1

Installation details: docs/INSTALLATION.md.

Requirements

• Claude Code CLI installed and configured.
• Python 3.11+ for quality scoring, the delivery contract runners, renderers, and lint.
• Optional: pip install -r requirements.txt for advanced analysis, readability scoring, schema detection, and media workflows.

Automated CI Quality Gates

1. pytest: the complete security, behavioral, regression, installer, and delivery-contract suite.
2. Plugin validation: claude plugin validate . plus manifest, marketplace, and frontmatter checks.
3. Stale-path lint: catches drift in references/, templates/, command docs, and installer payloads.
4. Prose hygiene: scripts/lint_prose.py enforces no em dash, no en dash, and no ASCII double-hyphen prose.
5. Version coherence: canonical version surfaces must all match the release version.
6. Command coherence: skills/blog/SKILL.md and docs/COMMANDS.md must declare the same command set.
7. Repository consistency: validates local reference targets, FLOW prompt locks, and reports orphaned resources without blocking.
8. Hash-locked dependency smoke: installs the audio and NotebookLM locks with --require-hashes, then initializes google-genai, Patchright, and preflight without API calls or a browser launch.
9. Brain validation: changes under brain/** run its pytest suite, vault lint, and report-only audit.

Run locally before pushing:

python3 -m pytest tests/
python3 scripts/lint_prose.py
claude plugin validate .

How Does claude-blog Compare?

claude-blog is a structured pipeline. Direct LLM prompting is a one-shot. Hosted SaaS tools are closed-source. The tradeoffs are:

Capability	claude-blog	Direct Claude or ChatGPT prompt	Copy.ai or Jasper	Build it yourself
Full article in one command with iteration loop	Yes	One-shot	Yes	No
Sourced statistics with verification	Yes	No	No	Manual
AI citation optimization (GEO / AEO)	Yes	No	No	Partial
Blocking content review with score 90+	Yes	No	No	No
Multilingual plus hreflang in one command	Yes	Partial	Partial	No
Topic-cluster planning	Yes	No	Partial	No
Audio narration	Yes	No	No	No
Hero image generation ladder	Yes	No	Stock only	Partial
Persistent brand and voice context	Yes	Per-prompt	Limited	No
Open-source, MIT, no SaaS subscription	Yes	No	No	Yes

claude-blog is not better at everything. Direct prompting is faster for a single throwaway draft. Hosted SaaS is easier for non-developers. DIY is more flexible for unique pipelines. claude-blog fits when you want production-grade content at scale without a SaaS subscription.

Frequently Asked Questions

What is claude-blog?

claude-blog is a Claude Code skill suite for writing, optimizing, and auditing blog content. It runs 32 skill directories through a 5-gate delivery contract so every article meets a 90/100 quality bar before it reaches you.

How is claude-blog different from prompting Claude or ChatGPT directly?

Direct prompting gives you one draft from one prompt. claude-blog gives you a structured pipeline: research with sourced statistics, outline approval, draft generation, multi-pass quality scoring, advisory editorial pattern review, fact verification, schema injection, and a blocking review that iterates up to 3 times before delivery.

Is claude-blog free and open source?

Yes. AgriciDaniel/claude-blog is MIT-licensed and available to anyone using Claude Code.

What blog platforms does claude-blog support?

Next.js MDX, Astro, Hugo, Jekyll, WordPress, Ghost, 11ty, Gatsby, and static HTML. The orchestrator auto-detects the platform and adjusts frontmatter, image embedding, and schema injection.

Does claude-blog hallucinate statistics?

The workflow is designed to block invented numbers. /blog factcheck fetches cited source URLs and scores each claim as exact match, paraphrase, or not found. blog-reviewer blocks publication when citations cannot be verified.

What is the 5-gate Blog Delivery Contract?

It is a pre-presentation pipeline for Capability Discovery, Format Completeness, Visual Verification, Content Review, and Asset and Link Integrity. The orchestrator iterates the writer up to 3 times on any gate failure before escalating to you. Full spec: skills/blog/references/blog-delivery-contract.md.

Can I use claude-blog in multiple languages?

Yes. /blog multilingual <topic> --languages <codes> writes the post, translates it while preserving frontmatter and schema, runs cultural adaptation per locale, and emits hreflang tags plus a CMS-ready language map.

How do I cite claude-blog in academic work?

See How To Cite or CITATION.cff. GitHub also surfaces the citation through the public mirror.

Is claude-blog secure to install?

The recommended flow downloads the installer as a file so you can inspect it before execution. v2.1.1 uses pinned refs, allowlisted recursive payload copies, manifest-backed uninstall, prose lint, version coherence checks, repository consistency checks, and installer regression tests. See SECURITY.md.

Documentation Index

• Installation Guide: Unix, macOS, Windows, manual install, and reproducible uv setup.
• Command Reference: Full command reference with examples.
• Architecture: System design and component overview.
• Publishing Workflow: Private-to-public release flow.
• Templates: Template reference and customization.
• Troubleshooting: Common issues and fixes.
• MCP Integration: Optional MCP server setup.
• Demo: Worked end-to-end example.

How To Cite

If you use claude-blog in research or production, please cite the project:

@software{Agrici_claude_blog_2026,
  author       = {Agrici, Daniel},
  title        = {claude-blog: AI Blog Writing and SEO Optimization Skill for Claude Code},
  year         = {2026},
  url          = {https://github.com/AgriciDaniel/claude-blog},
  version      = {2.1.1},
  license      = {MIT}
}

GitHub also surfaces the structured CITATION.cff file via "Cite this repository" on the public mirror page.

Security & Code of Conduct

• Security policy and threat model: SECURITY.md. To report a vulnerability privately, follow the disclosure procedure there.
• Code of Conduct: CODE_OF_CONDUCT.md. Contributor Covenant.

Contributing

Contributions are welcome. See CONTRIBUTING.md for guidelines. Before opening a PR:

1. Run python3 -m pytest tests/ and confirm the full suite passes.
2. Run python3 scripts/lint_prose.py and confirm zero violations.
3. Run claude plugin validate ..
4. Bump versions coherently if you touch user-visible counts or behavior.

License

MIT License. See LICENSE.

Related Projects

• Rankenstein: GUI-based content publishing workflow.
• FLOW framework: Evidence-led Find, Leverage, Optimize, Win prompts (CC BY 4.0).
• Claude Ads and Claude SEO: sibling Claude Code skills.
• AI Marketing Hub: Free community for AI-powered marketing.

Author

Built by Daniel Agrici, AI Workflow Architect, with Claude Code.

• Blog: Deep dives on AI marketing automation.
• YouTube: Tutorials and demos.
• All open-source tools: Other Claude Code skills.
• AI Marketing Hub: Free community for AI-powered marketing.