claude-blog is a Claude Code skill suite for planning, writing, optimizing, auditing, localizing, and refreshing blog content. It is for content and SEO workflows that produce articles and related publishing artifacts while checking drafts against defined delivery criteria. The catalogue entries provide the skills, agents, plugins, and instruction used by this workflow.
Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/AgriciDaniel/claude-blognpx agentmods add skills/agricidaniel/claude-blog/blog-chartWrote 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.
[](https://agentmods.dev/skills/agricidaniel/claude-blog/blog-chart)<a href="https://agentmods.dev/skills/agricidaniel/claude-blog/blog-chart"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-blog/blog-chart/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.
<a href="https://agentmods.dev/skills/agricidaniel/claude-blog/blog-chart"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-blog/blog-chart.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
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 →
- high Prompt Injection · line 107 Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00164 | $0.02661 |
| Opus 5.5 | $0.00066 | $0.01064 |
| Sonnet 5.5 | $0.00033 | $0.00532 |
| Haiku 4.5 | $0.00016 | $0.00266 |
Grade A, and why
blog-chart 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 279 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Blog Chart: Built-In SVG Data Visualization
Generates dark-mode-compatible inline SVG charts for blog posts. Invoked
internally by blog-write and blog-rewrite when chart-worthy data is
identified. Not a standalone user-facing command.
Styling source of truth: skills/blog/references/visual-media.md
For supported chart types, prefer the deterministic CLI:
python3 skills/blog-chart/scripts/generate_chart_svg.py --input chart.json --output chart.html --json
Input Format
The writer or researcher passes a chart request:
Chart Request:
- Type: horizontal bar
- Title: "AI Citation Sources by Platform"
- Data: ChatGPT 43.8%, Perplexity 6.6%, Google AI Overviews 2.2%, Reddit 7.15%
- Source: [Verified source], [publication date]
- Platform: mdx (or html)
Chart Type Selection
Select based on the data pattern. Prefer chart type diversity, but repeat a type when comparability or reader comprehension clearly benefits.
| Data Pattern | Best Chart Type |
|---|---|
| Before/after comparison | Grouped bar chart |
| Ranked factors / correlations | Lollipop chart |
| Parts of whole / market share | Donut chart |
| Trend over time | Line chart |
| Percentage improvement | Horizontal bar chart |
| Distribution / range | Area chart |
| Multi-dimensional scoring | Radar chart |
Styling Rules (Non-Negotiable)
All charts must work on both dark and light backgrounds:
Text elements: fill="currentColor"
Grid lines: stroke="currentColor" opacity="0.08"
Axis lines: stroke="currentColor" opacity="0.3"
Background: transparent (no fill on root SVG)
Subtitle text: fill="var(--chart-muted, currentColor)"
Source text: fill="var(--chart-muted, currentColor)"
Label text: fill="currentColor" opacity="0.8"
Set --chart-muted to an accessible text token in the host theme. If no token
exists, use #4b5563 on light backgrounds and #d1d5db on dark backgrounds.
Do not rely on low-opacity source or subtitle text for visible attribution.
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.
- 1mo ago First seen · 279 lines · 164 tokens per session scan A 31e72f074e1d
blog-chart is a skill published in the GitHub repository AgriciDaniel/claude-blog (2,528 stars, last pushed 12d ago), licensed MIT. It adds 164 tokens to every session and 2,661 once invoked, about $0.0007 per session on Opus 5.5. 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.
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