NewsBlur: Skill for Claude Code

.agents/skills/blog-post/SKILL.md

blog-post is a skill for Claude Code, Codex from samuelclay/NewsBlur. It costs 17 tokens per session (1,189 once invoked), scanned A, original, MIT.

A workflow for writing a blog post about a NewsBlur feature from the changes on the current code branch. It reads the branch diff and recent posts so the new article follows the site's established voice and structure.

In plain words
What is it for?
It helps turn code changes into short, medium, or long feature announcements with chosen tone, focus, sections, screenshots, and front matter.
Why use it?
It avoids writing an announcement without first checking what changed or how the publication normally presents features.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is samuelclay/NewsBlur's own configuration. It tells Claude Code and Codex how to work on NewsBlur itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything NewsBlur configures →

About the project

NewsBlur is a personal RSS news reader and social network that displays stories, the original sites they come from, and tools for filtering and discussing them. Readers use it to follow subscriptions, train story preferences, search and tag articles, share reading, and optionally self-host the service. The catalogue entries provide commands, skills, instructions, hooks, and settings for working with the NewsBlur project.

samuelclay/NewsBlur · 7,680 stars · on GitHub · newsblur.com

Reuse

Borrowing it

Nothing to install: this file belongs to samuelclay/NewsBlur. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/samuelclay/NewsBlur/main/.agents/skills/blog-post/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/samuelclay/NewsBlur

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 blog-post

README.md
[![agentmods](https://agentmods.dev/badge/skills/samuelclay/newsblur/blog-post/github.svg)](https://agentmods.dev/skills/samuelclay/newsblur/blog-post)
Your own site
<a href="https://agentmods.dev/skills/samuelclay/newsblur/blog-post"><img src="https://agentmods.dev/badge/skills/samuelclay/newsblur/blog-post/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 blog-post

Your own site · 80×15
<a href="https://agentmods.dev/skills/samuelclay/newsblur/blog-post"><img src="https://agentmods.dev/badge/skills/samuelclay/newsblur/blog-post.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,189 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00017 $0.01189
Opus 5.5 $0.00007 $0.00476
Sonnet 5.5 $0.00003 $0.00238
Haiku 4.5 $0.00002 $0.00119

Measured 8d ago against content hash f5a99e865acd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

blog-post 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 8d 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.

.agents/skills/blog-post/SKILL.md · 110 lines

How it starts

The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Your task

Write a blog post announcing a new NewsBlur feature based on the changes in the current branch. The blog post should match NewsBlur's voice and style.

Arguments provided: {{ arguments }}

Use the arguments to determine:

  • Length: short (2-3 paragraphs), medium (standard feature announcement), or long (in-depth with history/context)
  • Tone: Any specific tone guidance (excited, technical, casual, etc.)
  • Focus: Any specific aspects to emphasize

Steps to execute

  1. Analyze the branch changes to understand the feature:

    git log main..HEAD --oneline
    git diff main..HEAD --stat
    

    Then read the full diff to understand what was built:

    git diff main..HEAD
    
  2. Read the last 10 blog posts to match the voice and style:

    ls -t blog/_posts/*.md | head -10
    

    Read each of these files to understand:

    • The conversational first-person voice
    • How features are introduced and explained
    • Screenshot placement and formatting
    • Section structure (headers, examples, etc.)
    • How posts end (forum link, availability info)
  3. Write the blog post following these guidelines:

    Front matter:

    ---
    layout: post
    title: <compelling title that describes the feature>
    date: YYYY-MM-DD 09:00:00 -0700  # 9am Pacific on the publish date
    tags: ["web"]  # or ["ios"], ["android"], or multiple
    ---
    

    Always set date to 9am Pacific on the publish date, the same date as the filename. Use -0700 during daylight time (second Sunday of March to first Sunday of November) and -0800 otherwise. blog/_config.yml sets timezone: America/New_York, so a post dated only by its filename publishes at midnight Eastern, and feed readers in Pacific time show it on the previous evening.

    Voice and style:

    • First-person conversational tone ("I wanted...", "You can now...")
    • Start with the problem or motivation, then introduce the solution
    • Be direct and practical, not marketing-speak
    • Include real examples of how to use the feature
    • No em dashes or hyphens as punctuation. Restructure sentences instead.
    • Avoid AI slop: no overly polished language, no filler phrases like "excited to announce"

Read the full file on GitHub · 110 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. 8d ago Changed · +10 lines f5a99e865acd
  2. 1mo ago First seen · 100 lines · 17 tokens per session scan A 2811255e2647

Subscribe to this mod's changes

blog-post is a skill published in the GitHub repository samuelclay/NewsBlur (7,680 stars, last pushed yesterday), licensed MIT. It adds 17 tokens to every session and 1,189 once invoked, about $0.0001 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 2026-09-29.

Related

blog-post compared with skills from other repositories

blog-post next to 6 skills from other repositories
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blog-postsamuelclay/NewsBlurSkill7.7kyesterdayMITA17Claude Code, Codex
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databasemiles990/claude-software-skillsSkill269mo agoMITA14Claude Code, Codex
database-advanced-optimizationwilliamzujkowski/standardsSkill192mo agoMITA15Claude Code, Codex
argent-lenssoftware-mansion/argentSkill3.2kyesterdayApache-2.0A67Claude Code, Codex
argent-react-native-optimizationsoftware-mansion/argentSkill3.2kyesterdayApache-2.0A71Claude Code, Codex