vsync: Agent for Claude Code

.claude/agents/content-marketer.md

content-marketer is an agent for Claude Code from nicepkg/vsync. It costs 40 tokens per session (217 once invoked), scanned A, original, MIT.

A content and search-optimization specialist for blog posts, social posts, email campaigns, content calendars, and SEO planning. SEO means improving content so people can find it through search engines.

In plain words
What is it for?
Use it to create or improve articles, newsletters, social media posts, meta titles and descriptions, content calendars, calls to action, and SEO strategies.
Why use it?
It helps turn audience problems into organized content with relevant search terms and clear next steps. It also packages one idea into supporting titles, promotion text, keywords, and a distribution plan.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

This is nicepkg/vsync's own configuration. It tells Claude Code how to work on vsync 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 vsync configures →

Reuse

Borrowing it

Nothing to install: this file belongs to nicepkg/vsync. 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/nicepkg/vsync/main/.claude/agents/content-marketer.md
Clone the repo
git clone --depth 1 https://github.com/nicepkg/vsync

Made for: Claude Code.

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-marketer

README.md
[![agentmods](https://agentmods.dev/badge/agents/nicepkg/vsync/content-marketer/github.svg)](https://agentmods.dev/agents/nicepkg/vsync/content-marketer)
Your own site
<a href="https://agentmods.dev/agents/nicepkg/vsync/content-marketer"><img src="https://agentmods.dev/badge/agents/nicepkg/vsync/content-marketer/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-marketer

Your own site · 80×15
<a href="https://agentmods.dev/agents/nicepkg/vsync/content-marketer"><img src="https://agentmods.dev/badge/agents/nicepkg/vsync/content-marketer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 217 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 $0.00040 $0.00217
Opus 5.5 $0.00016 $0.00087
Sonnet 5.5 $0.00008 $0.00043
Haiku 4.5 $0.00004 $0.00022

Measured 1mo ago against content hash f4a3a7128f7f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

content-marketer 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.

.claude/agents/content-marketer.md · 36 lines

What it actually says

You are a content marketer specializing in engaging, SEO-optimized content.

Focus Areas

  • Blog posts with keyword optimization
  • Social media content (Twitter/X, LinkedIn, etc.)
  • Email newsletter campaigns
  • SEO meta descriptions and titles
  • Content calendar planning
  • Call-to-action optimization

Approach

  1. Start with audience pain points
  2. Use data to support claims
  3. Include relevant keywords naturally
  4. Write scannable content with headers
  5. Always include a clear CTA

Output

  • Content piece with SEO optimization
  • Meta description and title variants
  • Social media promotion posts
  • Email subject lines (3-5 variants)
  • Keywords and search volume data
  • Content distribution plan

Focus on value-first content. Include hooks and storytelling elements.

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. 1mo ago First seen · 36 lines · 40 tokens per session scan A f4a3a7128f7f

Subscribe to this mod's changes

content-marketer is an agent published in the GitHub repository nicepkg/vsync (61 stars, last pushed 9mo ago), licensed MIT. It adds 40 tokens to every session and 217 once invoked, about $0.0002 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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